Chirality Control for in Situ Preparation of Gold Nanoparticle Superstructures Directed by a Coordinatable Organogelator
2013 (English)In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 135, no 24, 9174-9180 p.Article in journal (Refereed) Published
Imposing chirality into nanoscale superstructures is a major step forward toward systematic understanding and utilization of nanomaterials. In an attempt to achieve tunable chirality during in situ preparation of hybrid nanomaterials, we here report a novel unimolecular strategy of employing a coordinatable organogelator for the realization of chirality control in the formation of gold nanoparticle superstructures. The work takes advantage of thermally reversible sol-gel transition of the chiral dispersion as template, which causes different micelle properties that can influence the coordination ability between the organogelator and Au(III) ions. Followed by a reduction reaction, gold nanoparticle superstructures with P-helicity were prepared from the sol form of the template through a coordination-induced chiral inversion, whereas those with M-helicity were obtained from the gel form with chiral holding. Such superstructures are solvent-stable and the chirality difference between them could be observed in many solvent environments.
Place, publisher, year, edition, pages
2013. Vol. 135, no 24, 9174-9180 p.
Plasmonic Circular-Dichroism, Mesoporous Silica, Organic-Molecules, Atomic Charges, Force-Fields, Thin-Films, Nanotubes, Nanostructures, Transition, Assemblies
IdentifiersURN: urn:nbn:se:kth:diva-129636DOI: 10.1021/ja403722tISI: 000320899200058ScopusID: 2-s2.0-84879391137OAI: oai:DiVA.org:kth-129636DiVA: diva2:653161
QC 201310032013-10-032013-10-032013-10-03Bibliographically approved