Silver chloride clusters and surface states
Article Abstract:
The (AgCl)(sub 108) is large enough for studying the influence of adsorption of an H20 and of Ag+(H20)2. This was gleaned from an investigation of the difference of light sensitivity between single-crystal or very compact AgCl materials and of AgCl nanocrystals, on which Ag+ ions have been adsorbed. The largest stabilization of H20 on (AgCl)(sub 108) is observed when it is coordinated to Ag+ at a corner site, which is slightly favored with respect to an Ag+ site at the plane. Water coordinated to Ag+ in the plane and on the edge has only minor influence on the SURS and no influence on the HOMO region. However, coordination at the corner shifts the SURS by about 0.5 eV to higher energy.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Surface-enhanced Raman scattering study of quinoxaline-2,3-dithiol and disodium bis(quinoxaline-2,3-dithiolato)nickelate(II) adsorbed on silver surface
Article Abstract:
Surface-enhanced Raman scattering (SERS) and Fourier transform-SERS techniques are used to investigate the adsorption of quinoxaline-2,3-dithiol (H2QS2) and disodium bis(quinoxaline-2,3-dithiolato)nickelate(II) (Na2-(Ni(QS2)2)) on a silver surface. The SERS spectra of H2QS2 suggests that H2QS2 dissociates on a silver surface to the quinoxaline-2,3-dithiolate ion, while the FT-SERS spectra indicate that the surface Raman spectrum is enhanced mainly through electromagnetic mechanism for near-infrared excitation. Results also show that the vibrational spectra of Na2-(Ni(QS2)2) are unaffected by adsorption.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Adsorption of a silver chemical vapor deposition precursor on polyurethane and reduction of the adsorbate to silver using formaldehyde
Article Abstract:
The interaction between a silver chemical vapor deposition precursor and a polyurethane surface was investigated using reflection-absorption infrared spectroscopy, atomic force microscopy and X-ray photoelectron spectroscopy. Experimental results from reflection-absorption infrared spectroscopy showed revealed a decline in intensity of both polyurethane C=O and N-H vibrational bands at 90, 300 and 340 K, indicating the occurrence of a specific interaction between ((fod)Ag(PMe3)) and polyurethane carbonyl groups at the surface. This interaction results in the displacement of (P(CH3)3).
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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