Photochromism of Benzylviologens Containing Methyl Groups on Pyridinium Rings and Embedded in Solid Poly(N-vinyl-2-pyrrolidone) Matrix

Article abstract of DOI:10.1246/bcsj.58.2443

Benzylviologens with 2,2'- and 3,3'-dimethyl groups embedded in poly (N-vinyl-2-pyrrolidone) matrix indicate reversible photochromisms with absorption maxima at 605 and 775 nm under light, respectively, which are different from those (610, 570 nm) of conventional benzylviologens.