A SURFACE-ENHANCED RAMAN SPECTROELECTROCHEMICAL STUDY OF A NUMBER OF PARA-AMINO-SUBSTITUTED TETRAPHENYLPORPHYRINS IN APROTIC MEDIA

被引：24

作者：

HOSTEN, CM ^{[1
]}

BIRKE, RL ^{[1
]}

LOMBARDI, JR ^{[1
]}

机构：

[1] CUNY CITY COLL,DEPT CHEM,NEW YORK,NY 10031

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 16期

关键词：

D O I：

10.1021/j100195a016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The surface-enhanced Raman scattering (SERS) spectra of five p-amino-substituted tetraphenylporphyrins were investigated at a silver electrode in the aprotic solvent acetonitrile. Good quality spectra were obtained for both the neutral porphyrin and its first reduction product, the radical anion. Fluorescence interference from the porphyrin was completely quenched by the surface. SERS spectra allowed for the identification of two geometries of the adsorbate. Cyclic voltammetry and UV-vis thin-layer spectroelectrochemistry were used to substantiate information obtained by SERS. The utility of SERS as a technique for identifying electrochemical products in a nonaqueous environment, where elucidation of the electrode mechanism is simpler and radical anions are more stable, is demonstrated.

引用

页码：6585 / 6592

页数：8

共 34 条

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