title: Photochromism of a naphthalene-bridged imidazole dimer constrained to the "anti" conformation.
abstract: Anti-1,8-bisTPI-naphthalene in which two imidazole rings are constrained to an anti-conformation leading to the first-formed 1,4'-isomer of the bridged imidazole dimer has been synthesized. The color of the radicals is different from that of the previously reported bridged-imidazolyl radicals because the intramolecular interaction between the radicals becomes weak due to the anti-conformation. This molecular design would be a profitable strategy to control the color of the radicals of the bridged imidazole dimer for application in ophthalmic lenses.
authors.affiliation: Department of Chemistry, School of Science and Engineering, Aoyama Gakuin University , 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan, and CREST, Japan Science and Technology Agency (JST) , 7 Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan.
authors.forename: Katsuya
authors.initials: K
authors.lastname: Mutoh
authors.forename: Kentaro
authors.initials: K
authors.lastname: Shima
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Masayuki
authors.initials: M
authors.lastname: Kobayashi
authors.forename: Jiro
authors.initials: J
authors.lastname: Abe