title: Exciplex ensemble modulated by excitation mode in intramolecular charge-transfer dyad: effects of temperature, solvent polarity, and wavelength on photochemistry and photophysics of tethered naphthalene-dicyanoethene system.
abstract: Solvent, temperature, and excitation wavelength significantly affected the photochemical outcomes of a naphthalene-dicyanoethene system tethered by different number (n) of methylene groups (1-3). The effect of irradiation wavelength was almost negligible for 2a but pronounced for 3a. The temperature dependence and theoretical calculations indicated the diversity of exciplex conformations, an ensemble of which can be effectively altered by changing excitation wavelength to eventually switch the regioselectivity of photoreactions.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Osaka University , 2-1 Yamada-oka, Suita 565-0871, Japan.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Aoki
authors.forename: Nobuo
authors.initials: N
authors.lastname: Matsuki
authors.forename: Tadashi
authors.initials: T
authors.lastname: Mori
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ikeda
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Inoue