期刊
TETRAHEDRON
卷 61, 期 52, 页码 12256-12263出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2005.09.099
关键词
photoswitch; macrocycle; diarylethene; high quantum yield
Two macrocycles bearing four dithienylethene units were synthesized. Upon irradiation of the macrocycles 5 and 6 with ultraviolet light, only one or two photo-induced cyclization reaction occurs. Each isomers were isolated and analyzed by H-1 NMR spectrum. The quantum yield of 5 and 6 are 0.58 and 0.64, respectively. The high value is due to the presence of enforced antiparallel conformation in the macrocycles 5 and 6. (c) 2005 Elsevier Ltd. All rights reserved.
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