Journal
TETRAHEDRON
Volume 62, Issue 43, Pages 10072-10078Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2006.08.061
Keywords
molecular switches; diarylethene; fluorescence; photochromism; deprotonation
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Two novel diarylethene derivatives containing imidazo [4,5-f] [1,10] phenanthroline have been efficiently synthesized. These molecules are sensitive to both light and chemical stimuli. Under sequential alternating UV-vis light irradiation and alkali/acid treatment, distinct differences in NMR, UV-vis, and fluorescent spectra were observed. Taking advantage of the variations in visible absorption and fluorescence, a reversible four-state molecular switch with two optical outputs was realized by a single molecule. (c) 2006 Elsevier Ltd. All rights reserved.
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