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  • 1. Afshar, Majid Ghahraman
    et al.
    Crespo, Gaston A.
    Bakker, Eric
    Thin-Layer Chemical Modulations by a Combined Selective Proton Pump and pH Probe for Direct Alkalinity Detection2015In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 54, no 28, 8110-8113 p.Article in journal (Refereed)
  • 2.
    Ahlquist, Mårten
    et al.
    KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.
    Norrby, Per-Ola
    Department of Chemistry, University of Gothenburg, Sweden.
    Dispersion and Back-Donation Gives Tetracoordinate [Pd(PPh3)4]2011In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 50, no 49, 11794-11797 p.Article in journal (Refereed)
    Abstract [en]

    18e R.I.P. The apparent compliance of [Pd(PPh3)4] ("tetrakis") with the 18-electron rule is not due to an electronic preference on the central metal. Pd is valence-saturated already by two ligands. Further ligand addition gives a minor energy gain, and is only possible due to strong back-bonding. Dispersion corrections are needed for properly describing the interactions between the ligands.

  • 3.
    Antoni, Per
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
    Hed, Yvonne
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
    Nordberg, Axel
    KTH, School of Technology and Health (STH), Neuronic Engineering (Closed 20130701).
    Nyström, Daniel
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
    von Holst, Hans
    KTH, School of Technology and Health (STH), Neuronic Engineering (Closed 20130701).
    Hult, Anders
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
    Malkoch, Michael
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
    Bifunctional Dendrimers: From Robust Synthesis and Accelerated One-Pot Postfunctionalization Strategy to Potential Applications2009In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 48, no 12, 2126-2130 p.Article in journal (Refereed)
  • 4. Baber, Ashleigh E.
    et al.
    Yang, Xiaofang
    Kim, Hyun You
    Mudiyanselage, Kumudu
    Soldemo, Markus
    KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Material Physics, MF.
    Weissenrieder, Jonas
    KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Material Physics, MF.
    Senanayake, Sanjaya D.
    Al-Mahboob, Abdullah
    Sadowski, Jerzy T.
    Evans, Jaime
    Rodriguez, Jose A.
    Liu, Ping
    Hoffmann, Friedrich M.
    Chen, Jingguang G.
    Stacchiola, Dario J.
    Stabilization of Catalytically Active Cu plus Surface Sites on TitaniumCopper Mixed-Oxide Films**2014In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 53, no 21, 5336-5340 p.Article in journal (Refereed)
    Abstract [en]

    The oxidation of CO is the archetypal heterogeneous catalytic reaction and plays a central role in the advancement of fundamental studies, the control of automobile emissions, and industrial oxidation reactions. Copper-based catalysts were the first catalysts that were reported to enable the oxidation of CO at room temperature, but a lack of stability at the elevated reaction temperatures that are used in automobile catalytic converters, in particular the loss of the most reactive Cu+ cations, leads to their deactivation. Using a combined experimental and theoretical approach, it is shown how the incorporation of titanium cations in a Cu2O film leads to the formation of a stable mixed-metal oxide with a Cu+ terminated surface that is highly active for CO oxidation.

  • 5. Bassan, A.
    et al.
    Zou, W. B.
    Reyes, E.
    Himo, Fahmi
    KTH, School of Biotechnology (BIO), Theoretical Chemistry.
    Cordova, A.
    The origin of stereoselectivity in primary amino acid catalyzed intermolecular Aldol reactions2005In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 44, no 43, 7028-7032 p.Article in journal (Refereed)
  • 6. Benninger, Richard K. P.
    et al.
    Hofmann, Oliver
    Önfelt, Björn
    Munro, Ian
    Dunsby, Chris
    Davis, Daniel M.
    Neil, Mark A. A.
    French, Paul M. W.
    de Mello, Andrew J.
    Fluorescence-lifetime imaging of DNA-dye interactions within continuous-flow microfluidic systems2007In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 46, no 13, 2228-2231 p.Article in journal (Refereed)
  • 7.
    Berglund, Per
    KTH, School of Biotechnology (BIO), Biochemistry.
    Asymmetric Organic Synthesis with Enzymes: Edited by Vicente Gotor, Ignacio Alfonso and Eduardo Garcia-Urdiales2008In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 47, no 35, 6514-6515 p.Article, book review (Other academic)
  • 8.
    Bernhardt, Peter
    et al.
    KTH, School of Biotechnology (BIO), Biochemistry.
    Hult, Karl
    KTH, School of Biotechnology (BIO), Biochemistry.
    Kazlauskas, R. J.
    Molecular basis of perhydrolase activity in serine hydrolases2005In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 44, no 18, 2742-2746 p.Article in journal (Refereed)
    Abstract [en]

    (Chemical Equation Presented) Changing substrates: A mutation that forms a cis-proline-peptide bond in a loop structure close to the active site of an aryl esterase from Pseudomonas fluorescens converts the enzyme into a perhydrolase (see picture). The switch in activity is explained by a new hydrogen bond formed between a backbone carbonyl oxygen atom and the peroxy deacylation intermediate.

  • 9. Björling, T.
    et al.
    Noréus, D.
    Jansson, K.
    Andersson, Magnus
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Leonova, E.
    Edén, M.
    Hålenius, U.
    Häussermann, U.
    SrAlSiH: A polyanionic semiconductor hydride2005In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 44, no 44, 7269-7273 p.Article in journal (Refereed)
    Abstract [en]

    (Chemical Equation Presented) Stable and semiconducting: Polyanionic hydrides represent a new class of main-group-metal hydrides with unforeseen hydrogen-coordination environments. The hydrogen atom in SrAlSiH is attached exclusively to Al and forms part of a layered [AlHSi]2- polyanion (see figure). This material is the first narrow bandgap semiconductor hydride and combines the high thermal stability of saline hydrides with the air and moisture stability of interstitial transition-metal hydrides.

  • 10. Brandau, Sven
    et al.
    Landa, Aitor
    Franzen, Johan
    Marigo, Mauro
    Jorgensen, Karl Anker
    Organocatalytic conjugate addition of malonates to alpha,beta-unsaturated aldehydes: Asymmetric formal synthesis of (-)-paroxetine, chiral lactams, and lactones2006In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 45, no 26, 4305-4309 p.Article in journal (Refereed)
  • 11.
    Caraballo, Rémi
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Dong, Hai
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Ribeiro, Joao P.
    Jimenez-Barbero, Jesus
    Ramström, Olof
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Direct STD NMR Identification of beta-Galactosidase Inhibitors from a Virtual Dynamic Hemithioacetal System2010In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 49, no 3, 589-593 p.Article in journal (Refereed)
    Abstract [en]

     The formation of a dynamic hemithioacetal system and its application toward the discovery of ß-galactosidase inhibitors were successfully investigated. The designed dynamic system, which has a virtual character in neutral aqueous media, was subjected to a direct in situ identification of the best inhibitors by 1H STD NMR spectroscopy (ONPC : o-nitrophenyl-β-galactopyranoside).

  • 12. Cheng, Ming
    et al.
    Yang, Xichuan
    Zhang, Fuguo
    Zhao, Jianghua
    Sun, Licheng
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Efficient Dye-Sensitized Solar Cells Based on Hydroquinone/Benzoquinone as a Bioinspired Redox Couple2012In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 51, no 39, 9896-9899 p.Article in journal (Refereed)
    Abstract [en]

    A hybrid electrolyte involving tetramethylammonium (TMA) hydroquinone/benzoquinone redox couple is formulated. This electrolyte is more transparent than the traditional I -/I 3 - electrolyte and has negligible absorption in the visible region. Dye-sensitized solar cells using the hybrid electrolyte show higher light-to-electricity conversion efficiency. FTO=fluorine-doped tin oxide.

  • 13.
    Chubarova, Elena V.
    et al.
    KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics. Jacobs Univ, Sch Sci & Engn, Germany.
    Dickman, M. H.
    Keita, B.
    Nadjo, L.
    Miserque, F.
    Mifsud, M.
    Arends, I. W. C. E.
    Kortz, U.
    Self-assembly of a heteropolyoxopalladate nanocube: [PdII 13AsV 8O34(OH)6] 8-2008In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 47, no 49, 9542-9546 p.Article in journal (Refereed)
    Abstract [en]

    (Chemical Equation Presented) Not like the others: A molecular palladium oxide cluster was formed by self-assembly of palladium(II) and arsenic(V) using mild reaction conditions. The resulting heteropolypalladate [Pd II 13AsV 8O34(OH) 6]8- has a distorted cubic shape and edge lengths of about 1 nm. The thirteen PdII ions retain four-coordinate square-planar geometry, in marked contrast to all other known discrete polyoxometalates.

  • 14. Crespo, Gaston A.
    et al.
    Afshar, Majid Ghahraman
    Bakker, Eric
    Reversible Sensing of the Anticoagulant Heparin with Protamine Permselective Membranes2012In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 51, no 50, 12575-12578 p.Article in journal (Refereed)
  • 15.
    Dinér, Peter
    et al.
    Danish National Research Foundation, Aarhus University.
    Nielsen, Martin
    Marigo, Mauro
    Jørgensen, Karl Anker
    Enantioselective organocatalytic conjugate addition of N heterocycles to alpha,beta-unsaturated aldehydes2007In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 46, no 12, 1983-1987 p.Article in journal (Refereed)
  • 16.
    Duan, Sai
    et al.
    KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.
    Tian, Guangjun
    KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.
    Luo, Yi
    KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology. University of Science and Technology of China, China.
    Visualization of Vibrational Modes in Real Space by Tip-Enhanced Non-Resonant Raman Spectroscopy2016In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 55, no 3, 1041-1045 p.Article in journal (Refereed)
    Abstract [en]

    We present a general theory to model the spatially resolved non-resonant Raman images of molecules. It is predicted that the vibrational motions of different Raman modes can be fully visualized in real space by tip-enhanced non-resonant Raman scattering. As an example, the non-resonant Raman images of water clusters were simulated by combining the new theory and first-principles calculations. Each individual normal mode gives rise its own distinct Raman image, which resembles the expected vibrational motions of the atoms very well. The characteristics of intermolecular vibrations in supermolecules could also be identified. The effects of the spatial distribution of the plasmon as well as nonlinear scattering processes were also addressed. Our study not only suggests a feasible approach to spatially visualize vibrational modes, but also provides new insights in the field of nonlinear plasmonic spectroscopy.

  • 17. Díaz-Álvarez, Alba E.
    et al.
    Mesas Sanchez, Laura
    Dinér, Peter
    Uppsala University.
    Non-Enzymatic Dynamic Kinetic Resolution of Secondary Aryl Alcohols: Planar Chiral Ferrocene and Ruthenium Catalysts in Cooperation2013In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 52502-504, no 2, 502-504 p.Article in journal (Refereed)
  • 18. Díaz-Álvarez, Alba E.
    et al.
    Mesas-Sánchez, Laura
    Dinér, Peter
    Uppsala University.
    Nichtenzymatische dynamische kinetische Racematspaltung sekundärer Arylalkohole: planar-chirale Ferrocen- und Rutheniumkatalysatoren im Zusammenspiel2013In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 125, no 2, 522-524 p.Article in journal (Refereed)
  • 19.
    Fan, Ke
    et al.
    KTH, School of Chemical Science and Engineering (CHE).
    Ji, Yongfei
    Zou, Haiyuan
    Zhang, Jinfeng
    Zhu, Bicheng
    Chen, Hong
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Daniel, Quentin
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Luo, Yi
    Yu, Jiaguo
    Sun, Licheng
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Hollow Iron-Vanadium Composite Spheres: A Highly Efficient Iron-Based Water Oxidation Electrocatalyst without the Need for Nickel or Cobalt2017In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 56, no 12, 3289-3293 p.Article in journal (Refereed)
    Abstract [en]

    Noble-metal-free bimetal-based electrocatalysts have shown high efficiency for water oxidation. Ni and/or Co in these electrocatalysts are essential to provide a conductive, high-surface area and a chemically stable host. However, the necessity of Ni or Co limits the scope of low-cost electrocatalysts. Herein, we report a hierarchical hollow FeV composite, which is Ni- and Co-free and highly efficient for electrocatalytic water oxidation with low overpotential 390 mV (10 mA cm(-2) catalytic current density), low Tafel slope of 36.7 mV dec(-1), and a considerable durability. This work provides a novel and efficient catalyst, and greatly expands the scope of low-cost Fe-based electrocatalysts for water splitting without need of Ni or Co.

  • 20.
    Franzen, Johan
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Fischer, Andreas
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Inorganic Chemistry.
    Asymmetric Alkaloid Synthesis: A One-Pot Organocatalytic Reaction to Quinolizidine Derivatives2009In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 48, no 4, 787-791 p.Article in journal (Refereed)
  • 21.
    Franzén, Johan
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Asymmetric Domino Reactions2013In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 52, no 47, 12222-12222 p.Article, book review (Other academic)
  • 22. Garcia Gallego, Sandra
    et al.
    Hult, Daniel
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Coating Technology.
    Olsson, Johan V.
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Coating Technology.
    Malkoch, Michael
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Coating Technology.
    Fluoride-Promoted Esterification with Imidazolide-Activated Compounds: A Modular and Sustainable Approach to Dendrimers2015In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 54, no 8, 2416-2419 p.Article in journal (Refereed)
    Abstract [en]

    Based on the growing demand for facile and sustainable synthetic methods to structurally perfect polymers, we herein describe a significant improvement of esterification reactions capitalizing on 1,1-carbonyldiimidazole (CDI). Cesium fluoride was shown to be an essential catalyst for these reactions to reach completion. This approach was successfully applied to the synthesis of structurally flawless and highly functional polyester dendrimers employing traditional and accelerated growth strategies. A sixth generation bis-MPA dendrimer with a molecular weight of 22.080Da and 192 peripheral hydroxy groups was isolated in less than one day of total reaction time. Large quantities of dendrimerswere obtained in high yields (>90%) using simple purification steps under sustainable conditions. The fluoride-promoted esterification (FPE) via imidazolide-activated compounds is wide in scope and constitutes a potentially new approach toward functional polymers and other materials.

  • 23.
    García-Gallego, Sandra
    et al.
    University of Cambridge, UK.
    Bernardes, G. J. L.
    Carbon-monoxide-releasing molecules for the delivery of therapeutic co in vivo2014In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 53, no 37, 9712-9721 p.Article in journal (Refereed)
    Abstract [en]

    The development of carbon-monoxide-releasing molecules (CORMs) as pharmaceutical agents represents an attractive and safer alternative to administration of gaseous CO. Most CORMs developed to date are transition-metal carbonyl complexes. Although such CORMs have showed promising results in the treatment of a number of animal models of disease, they still lack the necessary attributes for clinical development. Described in this Minireview are the methods used for CORM selection, to date, and how new insights into the reactivity of metal-carbonyl complexes in vivo, together with advances in methods for live-cell CO detection, are driving the design and synthesis of new CORMs, CORMs that will enable controlled CO release in vivo in a spatial and temporal manner without affecting oxygen transport by hemoglobin.

  • 24. Gibson, Elizabeth A.
    et al.
    Smeigh, Amanda L.
    Le Pleux, Loic
    Fortage, Jerome
    Boschloo, Gerrit
    Blart, Errol
    Pellegrin, Yann
    Odobel, Fabrice
    Hagfeldt, Anders
    KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.
    Hammarstrom, Leif
    A p-Type NiO-Based Dye-Sensitized Solar Cell with an Open-Circuit Voltage of 0.35 V2009In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 48, no 24, 4402-4405 p.Article in journal (Refereed)
  • 25.
    Gorlov, Mikhail
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Inorganic Chemistry.
    Fischer, Andreas
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Inorganic Chemistry.
    Kloo, Lars A.
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Inorganic Chemistry.
    One-step synthesis of a platinum(0)-gallium(II) chrysene complex2005In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 44, no 25, 3906-3909 p.Article in journal (Refereed)
  • 26. Guliashvili, T.
    et al.
    El-Sayed, I.
    Fischer, Andreas
    KTH, Superseded Departments, Chemistry.
    Ottosson, H.
    The first isolable 2-silenolate2003In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 42, no 14, 1640-1642 p.Article in journal (Refereed)
  • 27.
    Hagberg, Daniel
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Sun, Licheng
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Hagfeldt, Anders
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Physical Chemistry.
    Marinado, Tannia
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Physical Chemistry.
    Karlsson, Karl Martin
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    A Light Resistant Organic Sensitizer for Solar Cell Applications2009In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 48, 1576-1580 p.Article in journal (Refereed)
    Abstract [en]

    (Figure Presented) Finely tuned: A stable dye-sensitized solar cell that contains a molecularly engineered organic dye has been prepared. The efficiency of the cell remains at 90% after 1000 h of light soaking at 60 °C. The remarkable stability of the cell is also reflected in the open-circuit voltage value (Voc), short-circuit photocurrent-density value (J sc), and the fill factor, which also show barely no decline (see picture).

  • 28.
    Hamedi, Mahiar
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
    Karabulut, Erdem
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Fibre Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
    Marais, Andrew
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Fibre Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
    Herland, Anna
    Nyström, Gustav
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Fibre Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
    Wågberg, Lars
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Fibre Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
    Nanocellulose Aerogels Functionalized by Rapid Layer-by-Layer Assembly for High Charge Storage and Beyond2013In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 52, no 46, 12038-12042 p.Article in journal (Refereed)
    Abstract [en]

    Step by step: A robust and rapid method for the layer-by-layer assembly of polymers and nanoparticles on strong and elastic aerogels has been developed. Thin films of biomolecules, conducting polymers, and carbon nanotubes were assembled, which resulted in aerogels with a number of functions, including a high charge-storage capacity.

  • 29. Hansen, Anders L.
    et al.
    Ebran, Jean-Philippe
    Ahlquist, Mårten
    KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.
    Norrby, Per-Ola
    Skrydstrup, Troels
    Heck coupling with nonactivated alkenyl tosylates and phosphates: Examples of effective 1,2-migrations of the alkenyl palladium(II) intermediates2006In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 45, no 20, 3349-3353 p.Article in journal (Refereed)
  • 30. Haussermann, U.
    et al.
    Simak, S. I.
    Ahuja, R.
    Johansson, Börje
    A unified bonding picture for the metallic triel elements2000In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 39, no 7, 1246-+ p.Article in journal (Refereed)
  • 31. He, C. J.
    et al.
    Wang, M.
    Zhang, X. F.
    Wang, Z.
    Chen, C. N.
    Liu, J. H.
    Akermark, B.
    Sun, Licheng C.
    An unusual cyclization in a bis(cysteinyl-S) diiron complex related to the active site of Fe-only hydrogenases2004In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 43, no 27, 3571-3574 p.Article in journal (Refereed)
  • 32.
    Hirner, Sebastian
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Panknin, Olaf
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Edefuhr, Magnus
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Somfai, Peter
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Synthesis of aryl glycines by the alpha arylation of Weinreb amides2008In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 47, no 10, 1907-1909 p.Article in journal (Refereed)
  • 33.
    Hsieh, Yves S. Y.
    et al.
    University of Sydney, Australia.
    Wijeyewickrema, Lakshmi C.
    Wilkinson, Brendan L.
    Pike, Robert N.
    Payne, Richard J.
    Total synthesis of homogeneous variants of hirudin P6: a post-translationally modified anti-thrombotic leech-derived protein2014In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 53, no 15, 3947-51 p.Article in journal (Refereed)
    Abstract [en]

    Hirudin P6 is a leech-derived anti-thrombotic protein which possesses two post-translational modifications, O-glycosylation and tyrosine sulfation. In this study we report the ligation-based synthesis of a library of hirudin P6 proteins possessing homogeneous glycosylation and sulfation modifications. The nature of the modifications incorporated was shown to have a drastic effect on inhibition against both the fibrinogenolytic and amidolytic activities of thrombin and thus highlights a potential means for attenuating the biological activity of the protein.

  • 34.
    Ibrahem, Ismail
    et al.
    Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University.
    Rios, Ramon
    Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University.
    Vesely, Jan
    Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University.
    Hammar, Peter
    KTH, School of Biotechnology (BIO), Theoretical Chemistry.
    Eriksson, Lars
    Department of Structural Chemistry, Arrhenius Laboratory, Stockholm University.
    Himo, Fahmi
    KTH, School of Biotechnology (BIO), Theoretical Chemistry.
    Córdova, Armando
    Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University.
    Enantioselective Organocatalytic Hydrophosphination of α,β-Unsaturated Aldehydes2007In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 46, no 24, 4507-4510 p.Article in journal (Refereed)
    Abstract [en]

    Keeping it simple: Optically active phosphine derivatives can be obtained in high yields and in up to 99% ee by using simple chiral amines to catalyze the hydrophosphination of α,β-unsaturated aldehydes (see scheme, green sphere = chiral group). The synthetic utility of this highly chemo- and enantioselective transformation was exemplified by the one-pot asymmetric synthesis of β-phosphine oxide acids.

  • 35. Jiang, Huijun
    et al.
    Hou, Zhonghuai
    Luo, Yi
    KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.
    Unraveling the Mechanism for the Sharp-Tip Enhanced Electrocatalytic Carbon Dioxide Reduction: The Kinetics Decide2017In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 56, no 49, 15617-15621 p.Article in journal (Refereed)
    Abstract [en]

    The electrocatalytic reduction reaction of carbon dioxide can be significantly enhanced by the use of a sharp-tip electrode. However, the experimentally observed rate enhancement is many orders of magnitudes smaller than what would be expected from an energetic point of view. The kinetics of this tip-enhanced reaction are shown to play a decisive role, and a novel reaction-diffusion kinetic model is proposed. The experimentally observed sharp-tip enhanced reaction and the maximal producing rate of carbon monoxide under different electrode potentials are well-reproduced. Moreover, the optimal performance shows a strong dependence on the interaction between CO2 and the local electric field, on the adsorption rate of CO2, but not on the reaction barrier. Two new strategies to further enhance the reaction rate have also been proposed. The findings highlight the importance of kinetics in modeling electrocatalytic reactions.

  • 36. Jiang, Yi
    et al.
    Li, Fei
    Zhang, Biaobiao
    Li, Xiaona
    Wang, Xiaohong
    Huang, Fang
    Sun, Licheng
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Promoting the Activity of Catalysts for the Oxidation of Water with Bridged Dinuclear Ruthenium Complexes2013In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 52, no 12, 3398-3401 p.Article in journal (Refereed)
    Abstract [en]

    Solar fuels: Dinuclear ruthenium catalysts prepared from two covalently bridged monomeric catalytic units show outstanding activities towards the oxidation of water with high turnover numbers up to 43 000 and turnover frequencies up to 40 s-1 (see picture). Direct comparison of the performance parameters indicates that the dimers are significantly more active as catalysts than the monomers.

  • 37. Jonasson, Klara J.
    et al.
    Polukeev, Alexey V.
    Marcos, Rocio
    KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.
    Ahlquist, Mårten S. G.
    KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.
    Wendt, Ola F.
    Reversible -Hydrogen and -Alkyl Elimination in PC(sp(3))P Pincer Complexes of Iridium2015In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 54, no 32, 9372-9375 p.Article in journal (Refereed)
    Abstract [en]

    Despite significant progress in recent years, the cleavage of unstrained C(sp(3))C(sp(3)) bonds remains challenging. A CC coupling and cleavage reaction in a PC(sp(3))P iridium pincer complex is mechanistically studied; the reaction proceeds via the formation of a carbene intermediate and can be described as a competition between -hydrogen and -alkyl elimination; the latter process was observed experimentally and is an unusual way of C(sp(3))C(sp(3)) bond scission, which has previously not been studied in detail. Mechanistic details that are based upon kinetic studies, activation parameters, and DFT calculations are also discussed. A full characterization of a CC agostic intermediate is presented.

  • 38.
    Jönsson, Håkan N.
    et al.
    KTH, School of Biotechnology (BIO), Nano Biotechnology.
    Andersson Svahn, Helene
    KTH, School of Biotechnology (BIO), Nano Biotechnology.
    Droplet microfluidics-A tool for single-cell analysis2012In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 51, no 49, 12176-12192 p.Article, review/survey (Refereed)
    Abstract [en]

    Droplet microfluidics allows the isolation of single cells and reagents in monodisperse picoliter liquid capsules and manipulations at a throughput of thousands of droplets per second. These qualities allow many of the challenges in single-cell analysis to be overcome. Monodispersity enables quantitative control of solute concentrations, while encapsulation in droplets provides an isolated compartment for the single cell and its immediate environment. The high throughput allows the processing and analysis of the tens of thousands to millions of cells that must be analyzed to accurately describe a heterogeneous cell population so as to find rare cell types or access sufficient biological space to find hits in a directed evolution experiment. The low volumes of the droplets make very large screens economically viable. This Review gives an overview of the current state of single-cell analysis involving droplet microfluidics and offers examples where droplet microfluidics can further biological understanding. A one-off: Single-cell analysis is one of the most interesting applications for droplet microfluidics. Droplets provide robust compartments on the size scale of a single cell, and their ability to encapsulate and rapidly manipulate cells along with their immediate environment in monodisperse compartments allows the possibility of automation. This Review focuses on single-cell analyses and applications in drug screening and genetic and enzyme analysis.

  • 39.
    Jönsson, Håkan
    et al.
    KTH, School of Biotechnology (BIO), Nano Biotechnology.
    Samuels, Michael L.
    Brouzes, Eric R.
    Medkova, Martina
    Uhlén, Mathias
    KTH, School of Biotechnology (BIO), Proteomics.
    Link, Darren R.
    Andersson-Svahn, Helene
    KTH, School of Biotechnology (BIO), Nano Biotechnology.
    Detection and Analysis of Low-Abundance Cell-Surface Biomarkers Using Enzymatic Amplification in Microfluidic Droplets2009In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 48, no 14, 2518-2521 p.Article in journal (Refereed)
    Abstract [en]

    Finding the few: Cell-surface proteins are useful disease biomarkers, but current high-throughput methods are limited to detecting cells expressing more than several hundred proteins. Enzymatic amplification in microfluidic droplets (see picture) is a high-throughput method for detection and analysis of cell-surface biomarkers expressed at very low levels on individual human cells. Droplet optical labels allow concurrent analysis of several samples.

  • 40. Kaiser, N. F. K.
    et al.
    Bremberg, U.
    Larhed, M.
    Moberg, Christina
    KTH, Superseded Departments, Chemistry.
    Hallberg, A.
    Fast, convenient, and efficient molybdenum-catalyzed asymmetric allylic alkylation under noninert conditions: An example of microwave-promoted fast chemistry2000In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 39, no 20, 3596-3598 p.Article in journal (Refereed)
  • 41. Klemm, Dieter
    et al.
    Kramer, Friederike
    Moritz, Sebastian
    Lindström, Tom
    KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center BiMaC Innovation.
    Ankerfors, Mikael
    Material Processes, Innventia AB, Sweden.
    Gray, Derek
    Dorris, Annie
    Nanocelluloses: A New Family of Nature-Based Materials2011In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 50, no 24, 5438-5466 p.Article, review/survey (Refereed)
    Abstract [en]

    Cellulose fibrils with widths in the nanometer range are nature-based materials with unique and potentially useful features. Most importantly, these novel nanocelluloses open up the strongly expanding fields of sustainable materials and nanocomposites, as well as medical and life-science devices, to the natural polymer cellulose. The nanodimensions of the structural elements result in a high surface area and hence the powerful interaction of these celluloses with surrounding species, such as water, organic and polymeric compounds, nanoparticles, and living cells. This Review assembles the current knowledge on the isolation of microfibrillated cellulose from wood and its application in nanocomposites; the preparation of nanocrystalline cellulose and its use as a reinforcing agent; and the biofabrication of bacterial nanocellulose, as well as its evaluation as a biomaterial for medical implants.

  • 42. Kuepper, Frithjof C.
    et al.
    Feiters, Martin C.
    Olofsson, Berit
    Kaiho, Tatsuo
    Yanagida, Shozo
    Zimmermann, Michael B.
    Carpenter, Lucy J.
    Luther, George W., III
    Lu, Zunli
    Jonsson, Mats
    KTH, School of Chemical Science and Engineering (CHE), Chemistry.
    Kloo, Lars
    KTH, School of Chemical Science and Engineering (CHE), Chemistry.
    Commemorating Two Centuries of Iodine Research: An Interdisciplinary Overview of Current Research2011In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 50, no 49, 11598-11620 p.Article, review/survey (Refereed)
    Abstract [en]

    Iodine was discovered as a novel element in 1811 during the Napoleonic Wars. To celebrate the bicentennial anniversary of this event we reflect on the history and highlight the many facets of iodine research that have evolved since its discovery. Iodine has an impact on many aspects of life on Earth as well as on human civilization. It is accumulated in high concentrations by marine algae, which are the origin of strong iodine fluxes into the coastal atmosphere which influence climatic processes, and dissolved iodine is considered a biophilic element in marine sediments. Iodine is central to thyroid function in vertebrates, with paramount implications for human health. Iodine can exist in a wide range of oxidation states and it features a diverse supramolecular chemistry. Iodine is amenable to several analytical techniques, and iodine compounds have found widespread use in organic synthesis. Elemental iodine is produced on an industrial scale and has found a wide range of applications in innovative materials, including semiconductorsin particular, in solar cells.

  • 43.
    Larsson, Rikard
    et al.
    KTH, Superseded Departments, Chemistry.
    Pei, Zhichao
    KTH, Superseded Departments, Chemistry.
    Ramström, Olof
    KTH, Superseded Departments, Chemistry.
    Catalytic Self-Screening of Cholinesterase Substrates from a Dynamic Combinatorial Thioester Library2004In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 43, no 28, 3716-3718 p.Article in journal (Refereed)
    Abstract [en]

    Simply the best: Dynamic combinatorial chemistry coupled to enzyme catalysis was used to identify enzyme substrates in a library constructed from a series of thioesters and thiols by transesterification. The library was directly coupled to the catalytic action of acetylcholinesterase, which selectively hydrolyzed the best substrate candidates (see schematic representation). The process allowed rapid identification of discrete substrates.

  • 44. Lendel, Christofer
    et al.
    Bjerring, Morten
    Dubnovitsky, Anatoly
    Kelly, Robert T
    Filippov, Andrei
    Antzutkin, Oleg N.
    Nielsen, Niels C.
    Härd, Torleif
    A hexameric peptide barrel as building block of amyloid-β protofibrils.2014In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 53, 12756-12760 p.Article in journal (Refereed)
    Abstract [en]

    Oligomeric and protofibrillar aggregates formed by the amyloid-A beta peptide (A beta) are believed to be involved in the pathology of Alzheimer's disease. Central to Alzheimer pathology is also the fact that the longer A beta(42) peptide is more prone to aggregation than the more prevalent A beta(40). Detailed structural studies of A beta oligomers and protofibrils have been impeded by aggregate heterogeneity and instability. We previously engineered a variant of A beta that forms stable protofibrils and here we use solid-state NMR spectroscopy and molecular modeling to derive a structural model of these. NMR data are consistent with packing of residues 16 to 42 of A beta protomers into hexameric barrel-like oligomers within the protofibril. The core of the oligomers consists of all residues of the central and C-terminal hydrophobic regions of A beta, and hairpin loops extend from the core. The model accounts for why A beta(42) forms oligomers and protofibrils more easily than A beta(40).

  • 45.
    Lendel, Christofer
    et al.
    Swedish University of Agricultural Sciences (SLU), Sweden.
    Bjerring, Morten
    Dubnovitsky, Anatoly
    Kelly, Robert T
    Filippov, Andrei
    Antzutkin, Oleg N
    Nielsen, Niels Chr
    Härd, Torleif
    A hexameric peptide barrel as building block of amyloid-β protofibrils2014In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 53, no 47Article in journal (Refereed)
    Abstract [en]

    Oligomeric and protofibrillar aggregates formed by the amyloid-β peptide (Aβ) are believed to be involved in the pathology of Alzheimer's disease. Central to Alzheimer pathology is also the fact that the longer Aβ42 peptide is more prone to aggregation than the more prevalent Aβ40 . Detailed structural studies of Aβ oligomers and protofibrils have been impeded by aggregate heterogeneity and instability. We previously engineered a variant of Aβ that forms stable protofibrils and here we use solid-state NMR spectroscopy and molecular modeling to derive a structural model of these. NMR data are consistent with packing of residues 16 to 42 of Aβ protomers into hexameric barrel-like oligomers within the protofibril. The core of the oligomers consists of all residues of the central and C-terminal hydrophobic regions of Aβ, and hairpin loops extend from the core. The model accounts for why Aβ42 forms oligomers and protofibrils more easily than Aβ40 .

  • 46. Li, Fei
    et al.
    Jiang, Yi
    Zhang, Biaobiao
    Huang, Fang
    Gao, Yan
    Sun, Licheng
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Towards A Solar Fuel Device: Light-Driven Water Oxidation Catalyzed by a Supramolecular Assembly2012In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 51, no 10, 2417-2420 p.Article in journal (Refereed)
    Abstract [en]

    Time to split: Supramolecular assemblies containing both photosensitizers and a ruthenium water-oxidation catalyst were prepared and characterized. The pictured assembly exhibits, for the first time, enhanced visible-light-driven water oxidation activity.

  • 47.
    Li, Fei
    et al.
    Dalian University of Technology, Dalian, China.
    Zhang, Biaobiao
    Dalian University of Technology, Dalian, China.
    Li, Xiaona
    Dalian University of Technology, Dalian, China.
    Jiang, Yi
    Dalian University of Technology, Dalian, China.
    Chen, Lin
    Dalian University of Technology, Dalian, China.
    Li, Yanqing
    Dalian University of Technology, Dalian, China.
    Sun, Licheng
    KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
    Highly efficient oxidation of water by a molecular catalyst immobilized on carbon nanotubes2011In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 50, no 51, 12276-12279 p.Article in journal (Refereed)
    Abstract [en]

    A successful team: A molecular device based on multiwalled carbon nanotubes functionalized by a mononuclear ruthenium catalyst has been shown to split water electrochemically (see picture; ITO=indium tin oxide). The readily prepared electrode showed excellent electrocatalytic activity for the oxidation of water, a high current density, and a low overpotential, and constitutes one step forward in the design of artificial photosynthetic systems.

  • 48.
    Lindsjö, Martin
    et al.
    KTH, Superseded Departments, Chemistry.
    Fischer, Andreas
    KTH, Superseded Departments, Chemistry.
    Kloo, Lars
    KTH, Superseded Departments, Chemistry.
    Sb8[GaCl4]2: Isolation of a Homopolyatomic Antimony Cation2004In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 43, no 19, 2540-2543 p.Article in journal (Refereed)
    Abstract [en]

    An almost perfect square-antiprismatic geometry is observed for Sb 82+ (see picture), as predicted by the Wade rules. The title compound, which was synthesized in benzene at room temperature, represents the first homopolyatomic antimony cation and has Sb-Sb bond lengths of 285-300 pm.

  • 49. Liu, Li
    et al.
    Yan, Mingdi
    Portland State University.
    A general approach to the covalent immobilization of single polymers2006In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 45, no 37, 6207-6210 p.Article in journal (Refereed)
    Abstract [en]

    Stuck fast: The covalent immobilization of polymeric single molecules is achieved by the photochemically induced C-H/N-H insertion reaction of perfluorophenylazides (see picture). When the concentration of the surface azido groups is decreased, isolated polymeric single molecules are observed. This technique is especially suited for materials that do not possess functional groups and are difficult to be immobilized by other means. (Chemical Equation Presented).

  • 50. Lundgren, Anders
    et al.
    Hed, Yvonne
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Coating Technology.
    Öberg, Kim
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Coating Technology.
    Sellborn, Anders
    Fink, Helen
    Loewenhielm, Peter
    Kelly, Jonathan
    Malkoch, Michael
    Berglin, Mattias
    KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Coating Technology.
    Self-Assembled Arrays of Dendrimer-Gold-Nanoparticle Hybrids for Functional Cell Studies2011In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 50, no 15, 3450-3453 p.Article in journal (Refereed)
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