期刊
TETRAHEDRON LETTERS
卷 47, 期 4, 页码 467-471出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2005.11.059
关键词
quinodimethane; strained molecule; steric hindrance; redox system; electrochromism; dye; dication; acenaphthene; electrocyclization
Severely deformed title quinodimethanes [1,2-bis(diarylmethylene)acenaphthenes] 1 have been designed and prepared as novel electrochromic materials, which can be reversibly interconverted with the deeply colored dicationic dyes 1(2+) with acenaphthylene-1,2-diyl skeleton. The X-ray analysis of 1 revealed that the inner two aryl groups are forced to overlap in proximity, which can account for the facile electrocyclization process to the isomer. By combination of reversible electrochemical transformation with irreversible isomerization process, the present system provides a prototype for novel molecular response systems equipped with the 'write-protect' option. (c) 2005 Elsevier Ltd. All rights reserved.
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