title: Photoirradiation wavelength dependence of cycloreversion quantum yields of diarylethenes.
abstract: The cycloreversion quantum yields of compounds 1b and 2b increased upon irradiation with light at shorter wavelengths. The irradiation wavelength dependence is ascribed to the energy barrier on the 2A potential energy surface in the excited electronic state.
authors.affiliation: Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan. iriem@rikkyo.ac.jp.
authors.forename: Takaki
authors.initials: T
authors.lastname: Sumi
authors.forename: Yuta
authors.initials: Y
authors.lastname: Takagi
authors.forename: Akira
authors.initials: A
authors.lastname: Yagi
authors.forename: Masakazu
authors.initials: M
authors.lastname: Morimoto
authors.forename: Masahiro
authors.initials: M
authors.lastname: Irie