Salt effect in photoinduced electron transfer isomerization reaction

Abstract

N-Bu4NBF4 was used as a probe to investigate the mechanism of 9,10-dicyanoanthracene sensitized isomerization of cis-stilbene and quadricyclane. Addition of n-Bu4NBF4 accelerated the isomerization of cis-stilbene dramatically but retarded the reaction of quadricyclane. Fluorescence quenching and flash photolysis experiment proved that n-Bu4NBF4 could cause the dissociation of the exciplex to form separated radical ions effectively. It was verified that the isomerizations of cis-stilbene and quadricyclane are via radical ion and via the exciplex resp.

Key words: AMMONIUM COMPOUND, PHOTOSENSITIZATION, REACTION MECHANISM, BUTYL GROUP, FREE RADICAL REACTION, ORGANO FLUORINE COMPOUNDS, ISOMERIZATION REACTION, BORIC ACID P, PROBES, CYANOGEN COMPOUNDS

CLC Number:

O644

Cite this article

WANG XIANGDONG;ZHANG BAOWEN;CAO YI. Salt effect in photoinduced electron transfer isomerization reaction[J]. Acta Chimica Sinica, 1991, 49(6): 600-604.

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光敏电子转移异构反应中的盐效应