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 Научная публикация

Журнал

Langmuir
ISSN: 0743-7463

Вых. Данные

Год: 2008, Том: 24, Номер: 3, Страницы: 609-612 Страниц : 4 DOI: 10.1021/la702823n

Авторы

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

Организации

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

Опубликована online:	12 янв. 2008 г.
Опубликована в печати:	1 февр. 2008 г.

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