title: Unusual electronic absorption changes in the 800-2200 nm region by intramolecular dimer radical cations from photoirradiated meso-2,4-bis[4-(4'-nitrostyryl)pyridinium]pentane ditetraphenylborates during storage in the dark.
abstract: Electronic absorption spectra were remarkably changed in the broad near-infrared region for photoirradiated meso-2,4-bis[4-(4'-nitrostyryl)pyridinium]pentane ditetraphenylborates during storage in the dark, which was attributed to conformational changes of the intramolecular dimer radical cations between sandwich and partially overlapped types.
authors.affiliation: Department of Electronic Materials Science, Graduate School of Electronic Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu 432-8011, Japan.
authors.forename: S H
authors.initials: SH
authors.lastname: Park
authors.forename: T
authors.initials: T
authors.lastname: Nagamura