title: Thiophene-substituted phenoxyl-imidazolyl radical complexes with high photosensitivity.
abstract: Phenoxyl-imidazolyl radical complex (PIC) is a novel photochromic compound, which generates two nonequivalent radicals upon UV light irradiation. While the color fading speed of PIC can be tuned from tens of nanoseconds to seconds, the low visible sensitivity has limited their potential applications. Herein, we developed novel thiophene-substituted PIC derivatives. The visible sensitivity and the increased absorption coefficient were achieved with keeping the moderate color fading speed by introducing a phenyl group at the 5-position of the thiophene ring.
authors.affiliation: Department of Chemistry, School of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan. jiro_abe@chem.aoyama.ac.jp.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Ikezawa
authors.forename: Katsuya
authors.initials: K
authors.lastname: Mutoh
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Kobayashi
authors.forename: Jiro
authors.initials: J
authors.lastname: Abe