Surface adsorption of 4,4 '-dithiodipyridine and 2,2 '-dithiodipyridine on silver nanoparticles
authors Nogueira, HIS; Cruz, SMG; Soares-Santos, PCR; Ribeiro-Claro, PJA; Trindade, T
nationality International
journal JOURNAL OF RAMAN SPECTROSCOPY
author keywords surface-enhanced Raman scattering; dithiodipyridines; metal nanoparticles; surface adsorption
keywords ENHANCED RAMAN-SCATTERING; LANGMUIR-BLODGETT MANIPULATION; SELECTION-RULES; MOLECULES; SPECTROSCOPY; SERS; SUPERLATTICES; SPHERES; SPECTRA; ACID
abstract A detailed vibrational study on the isomers 2,2'-dithiodipyridine and 4,4'-dithiodipyridine was carried out. These organic ligands are of great interest as possible linkers in the fabrication of nanostructures, and therefore a study on the adsorption modes of both ligands at silver surfaces is presented. Orientational information on the 2,2-dithiodipyridine and 4,4'-dithiodipyridine molecules adsorbed on silver colloids was collected based on the SERS spectra and supported by ab initio calculations. There is evidence that both organic ligands adsorb on the silver surface through the sulfur atoms, with the aromatic rings in a tilted position. Copyright (C) 2003 John Wiley Sons, Ltd.
publisher JOHN WILEY & SONS LTD
issn 0377-0486
year published 2003
volume 34
issue 5
beginning page 350
ending page 356
digital object identifier (doi) 10.1002/jrs.1002
web of science category Spectroscopy
subject category Spectroscopy
unique article identifier WOS:000183172100003
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