Interfacial surface properties of thiol-protected gold nanoparticles: A molecular probe EPR approach

Interfacial surface properties of thiol-protected gold nanoparticles: A molecular probe EPR approach Full article

Journal

Langmuir
ISSN: 0743-7463

Output data

Year: 2008, Volume: 24, Number: 3, Pages: 609-612 Pages count : 4 DOI: 10.1021/la702823n

Authors

Khlestkin Vadim K. ¹ , Polienko Julya F. ¹ , Voinov Maxim A. ² , Smirnov Alex I. ² , Chechik Victor ³

Affiliations

1	(Данные Web of science) Novosibirsk Organ Chem Inst, Novosibirsk 630090, Russia
2	Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204
3	Department of Chemistry, University of York, Heslington, York YO10 5DD

We present a molecular probe technique for accessing interfacial surface electrostatics of ligand-protected gold nanoparticles. A series of ligands with variable length of the hydrocarbon bridge between the anchoring sulfur and the reporting pH-sensitive nitroxide is described. The protonation state of this probe is directly observed by EPR spectroscopy. For tiopronin-protected An nanoparticles, we observed an increase in pK(a) of up to ca. 1.1 pH units that was affected by the position of the reporter moiety with respect to the monolayer interface.

Khlestkin V.K. , Polienko J.F. , Voinov M.A. , Smirnov A.I. , Chechik V.
Interfacial surface properties of thiol-protected gold nanoparticles: A molecular probe EPR approach
Langmuir. 2008. V.24. N3. P.609-612. DOI: 10.1021/la702823n WOS Scopus РИНЦ OpenAlex

Published online:	Jan 12, 2008
Published print:	Feb 1, 2008

Web of science:	WOS:000252777700003
Scopus:	2-s2.0-39449132105
Elibrary:	13580507
OpenAlex:	W2042771078

DB	Citing
Web of science	25
Scopus	27
Elibrary	27
OpenAlex	31