Citation: Chun Yan LIU, Zhen Zong ZHANG, Xin Min REN. THE CHARACTERIZATION OF SILVER SUBCOLLOID USED IN SURFACE ENHANCED RAMAN SPECTROSCOPY[J]. Chinese Chemical Letters, ;1992, 3(7): 543-546. shu

THE CHARACTERIZATION OF SILVER SUBCOLLOID USED IN SURFACE ENHANCED RAMAN SPECTROSCOPY

The Center of Photoelectrochemistry, Institute of Photographic Chemistry, Academia Sinica, Beijing 100101

Received Date: 26 August 1991

Fund Project: The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China.

A clear light-yellow silver sol which has the visible spectral absorption at 390 nm, when adsorbed phenylmercaptotetrazole(PMT) or mercaptobenzothiazole (MBT), has a new absorption at 510-550 nm. It was found that the adsorption of halide ions competes with PMT and MBT. However, halide ions have a completely different influence from PMT and MBT on the spectral absorption of the silver sol. The differences may result from the change of the properties of the surface of the silver subcolloidal particles and from the bond forms combining adsorbates with the substrates.
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