SYNTHESIS AND SPECTROSCOPIC PROPERTIES OF PHTHALOCYANINE DIMERS IN SOLUTION

被引：49

作者：

FERENCZ, A ^{[1
]}

NEHER, D ^{[1
]}

SCHULZE, M ^{[1
]}

WEGNER, G ^{[1
]}

VIAENE, L ^{[1
]}

DESCHRYVER, FC ^{[1
]}

机构：

[1] KATHOLIEKE UNIV LEUVEN,DEPT SCHEIKUNDE,B-3001 HEVERLEE,BELGIUM

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 245卷 / 01期

关键词：

D O I：

10.1016/0009-2614(95)00978-D

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：

A soluble dimer of a tetra-(methoxy)-tetra-(octyloxy)-substituted silicon phthalocyanine has been prepared. Optical absorption spectra of the compound in solution showed a pronounced solvatochromism, characterized by a rather sharp peak with maximum at 640 nm in aromatic solvents and a broad absorption band consisting of up to five individual peaks for non-aromatic solutions such as THF or chloroform. Nanosecond transient absorption spectra exhibited a long-lived photoinduced absorption band at 520 nn which can be assigned to triplet absorption. Large quantum yields for intersystem crossing ranging between 30% and 40% were observed. These findings are compared to the results on the monomeric and polymeric compounds and discussed in the framework of exciton coupling.

引用

页码：23 / 29

页数：7

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