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

Article abstract of DOI:10.1246/bcsj.65.301

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 brough