- Photochromism of diarylethene maleimide derivatives
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Diarylmaleimide derivatives having an indole ring, N-cyanomethyl-2-[2- methoxy-1-benzothiophen-3-yl]-3-[2-methyl-1-octadecylindol-3-yl]maleimide or N-cyanomethyl-2-[2-ethoxy-1-benzothiophen-3-yl]-3-[2-methyl-1-octadecylindol-3- yl]maleimide, were synthesized in an attempt to shift the photosensitive wavelength longer such that it becomes longer than 450 nm. The derivatives underwent the photocyclization reaction upon irradiation with 450-550 nm light in hexane solution and the photogenerated closed-ring isomers returned to the initial open-ring isomers upon irradiation with light longer than 600 nm.
- Yamaguchi, Tadatsugu,Matsuo, Masatsugu,Irie, Masahiro
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- Thermally Irreversible Photochromic Systems. Reversible Photocyclization of Diarylethene Derivatives
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The reversible photocyclization of 1,2-diarylethene derivatives having methyl-substituted heterocyclic rings has been found to constitute a photochromic system, which is both thermally irreversible and fatigue resistant. cis-1,2-Dicyano-1,2-bis(2,4,5-trim
- Irie, Masahiro,Mohri, Masaaki
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p. 803 - 808
(2007/10/02)
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