OVERTONE AND COMBINATION BAND RAMAN-SPECTRA OF ALPHA-COPPER PHTHALOCYANINE

被引：6

作者：

BOVILL, AJ ^{[1
]}

MCCONNELL, AA ^{[1
]}

ROSPENDOWSKI, BN ^{[1
]}

SMITH, WE ^{[1
]}

机构：

[1] UNIV STRATHCLYDE,DEPT PURE & APPL CHEM,295 CATHEDRAL ST,GLASGOW G1 1XL,SCOTLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1992年 / 88卷 / 03期

关键词：

D O I：

10.1039/ft9928800455

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：

Compacted electrodes made by pressing alpha-copper phthalocyanine (alpha-CuPc) and silver metal powder provide an effective method to measure resonance Raman scattering from alpha-CuPc. We report first and very weak second overtone and combination bands of alpha-CuPc. They are based on progressions in nu(3), nu(4), nu(7) and nu(15) modes. Three of these are A1g vibrations of alpha-CuPc, indicating a much stronger symmetric contribution to overtone scattering than is the case in porphyrins. Overtone profiles at 0 V vs. SCE arise mainly from scattering from 0 to 1 vibronic overtone states with evidence of higher state contributions in some cases. This is in contrast to the more varied profiles of fundamental modes and is as expected from theory. The results support the view that Raman scattering from alpha-CuPc involves a Jahn-Teller distorted excited state and is due to A as well as B term enhancement.

引用

页码：455 / 459

页数：5

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