Photochemical" across-a ridge" ZE isomerization of (ethenyl-2-d) anthracenes in the triplet state

…, M Nojiri, N Nakahigashi, S Watanabe…

Index: Karatsu, Takashi; Misawa, Hiroaki; Nojiri, Mikiko; Nakahigashi, Naoko; Watanabe, Seiichi; et al. Journal of Physical Chemistry, 1994 , vol. 98, # 2 p. 508 - 512

Full Text: HTML

Citation Number: 4

Abstract

((Z)-l-, 2-, and 9-EAD, and (E)-2-EAD, respectively) undergo photochemical 2-E isomerization under thermal activation. The temperature dependence of their isomerization quantum yields and the temperature independence of lifetimes of their T,+ TI absorptions indicate that EADs isomerize adiabatically between the 2 and E isomers in the lowest excited triplet state by overcoming an activation barrier (E,= 19-46 kJ mol-') of the ...