Synthesis and Photochromism of Dibenzylviologen Coupled with 5,10,15,20-Tetraphenylporphyrin or Its Metal Complex via a Carbonyloxy Spacer

1,1′-Dibenzyl-4,4′-bipyridinium (viologen) coupled with 5,10,15,20-tetraphenylporphyrin or its metal complex via a carbonyloxy spacer was prepared by modification of 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin. The viologens in polar aprotic media brought about increases in the visible absorption...

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Bibliographic Details
Published inBulletin of the Chemical Society of Japan Vol. 65; no. 1; pp. 301 - 303
Main Authors Kamogawa, Hiroyoshi, Koga, Kazuhi
Format Journal Article
LanguageEnglish
Published Tokyo The Chemical Society of Japan 01.01.1992
Chemical Society of Japan
Subjects
Chemistry
Exact sciences and technology
Heterocyclic compounds
Heterocyclic compounds with several n hetero atoms in the same ring, in separated rings or in fused rings
Organic chemistry
Preparations and properties
Photochromism
Nitrogen heterocycle
Iminium compounds
Six membered ring
Metalloporphyrin
Transition metal Complexes
Macrocycle
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Summary:1,1′-Dibenzyl-4,4′-bipyridinium (viologen) coupled with 5,10,15,20-tetraphenylporphyrin or its metal complex via a carbonyloxy spacer was prepared by modification of 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin. The viologens in polar aprotic media brought about increases in the visible absorption characateristic of, but different in stability from, those of the conventional viologen radical cations upon irradiation with visible light (photochromism).
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.65.301