Bichromophoric photochromes based on the opening and closing of a single oxazine ring

M Tomasulo, S Sortino, FM Raymo

Index: Tomasulo, Massimiliano; Sortino, Salvatore; Raymo, Francisco M. Journal of Organic Chemistry, 2008 , vol. 73, # 1 p. 118 - 126

Full Text: HTML

Citation Number: 53

Abstract

We have designed bichromophoric photochromes based on the photoinduced opening and thermal closing of a [1, 3] oxazine ring. In particular, we have synthesized six compounds incorporating fused 3 H-indole and 4-nitrophenoxy fragments and pendant biphenyl, styryl, biphenylvinyl, or stilbenylvinyl groups. The laser excitation of two of these six molecules cleaves a [CO] bond and opens their [1, 3] oxazine ring in less than 6 ns with quantum ...