Laser photolysis study of trans→cis photoisomerization of trans-1-phenyl-2-(2-naphthyl) ethylene
1974; Elsevier BV; Volume: 29; Issue: 3 Linguagem: Inglês
10.1016/0009-2614(74)85133-x
ISSN1873-4448
AutoresMinoru Sumitani, S. Nagakura, Keitaro Yoshihara,
Tópico(s)Advanced Chemical Physics Studies
ResumoThe direct trans→cis photoisomerization of trans-1-phenyl-2-(2-naphthyl) ethylene (trans-PNE) in liquid solution at room temperature was studied by the nanosecond laser photolysis technique. The time-resolved Sn←S1 and Tn←T1 absorption spectra were observed with trans-PNE at 300 K and 77 K. The lifetime of the triplet state of trans-PNE was found to be much shorter in liquid solution at room temperature than in rigid solution at 77 K. This fact and the effect of a triplet quencher shows that the photoisomerization of trans-PNE occurs mainly via the triplet state.
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