Title of article :
Excitation wavelength dependence of the Z → E one-way isomerization of 4-halostilbene radical cations in excited states
Author/Authors :
Waga، نويسنده , , Masashi and Maki، نويسنده , , Shin-ichiro and Hashimoto، نويسنده , , Fumiko and Sakuragi، نويسنده , , Hirochika، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1997
Abstract :
Excitation of (Z)-4-halostilbene radical cations ((Z)-XSt+; X = F, Cl, Br) around 500 or 700 nm induced their rapid one-way isomerization to the corresponding (E)-radical cations, as observed in two-color pulsed laser photolysis of (Z)- and (E)-XSt in acetonitrile containing 9,10-dicyanoanthracene and biphenyl as electron-transfer sensitizers. The efficiencies of isomerization and quenching by biphenyl as electron donor are discussed on the basis of the electronic configurations and energy surfaces of the relevant excited states.
Journal title :
Chemical Physics Letters
Journal title :
Chemical Physics Letters