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Intrinsically disordered protein as carbon nanotube dispersant: How dynamic interactions lead to excellent colloidal stability
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Applied Physical Chemistry.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Applied Physical Chemistry. Centro de Investigação em Química, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre, s/n, Porto, P-4169-007, Portugal.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Applied Physical Chemistry.
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2019 (English)In: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 556, p. 172-179Article in journal (Refereed) Published
Abstract [en]

The rich pool of protein conformations combined with the dimensions and properties of carbon nanotubes create new possibilities in functional materials and nanomedicine. Here, the intrinsically disordered protein α-synuclein is explored as a dispersant of single-walled carbon nanotubes (SWNTs) in water. We use a range of spectroscopic methods to quantify the amount of dispersed SWNT and to elucidate the binding mode of α-synuclein to SWNT. The dispersion ability of α-synuclein is good even with mild sonication and the obtained dispersion is very stable over time. The whole polypeptide chain is involved in the interaction accompanied by a fraction of the chain changing into a helical structure upon binding. Similar to other dispersants, we observe that only a small fraction (15–20%) of α-synuclein is adsorbed on the SWNT surface with an average residence time below 10 ms

Place, publisher, year, edition, pages
Academic Press, 2019. Vol. 556, p. 172-179
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-258234DOI: 10.1016/j.jcis.2019.08.050ISI: 000491301300018Scopus ID: 2-s2.0-85070901886OAI: oai:DiVA.org:kth-258234DiVA, id: diva2:1349911
Note

QC 20191014

Available from: 2019-09-10 Created: 2019-09-10 Last updated: 2019-12-20Bibliographically approved

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Chaudhary, HimanshuFuro, IstvanLendel, Christofer

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Chaudhary, HimanshuFerreira Fernandes, Ricardo M.Gowda, VasanthaFuro, IstvanLendel, Christofer
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