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Chinese Journal of Organic Chemistry 1992, 12(1) 76-80 DOI:
ISSN: 0253-2786 CN: 31-1321/O6 |
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| Original Articles |
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Synthesis of photochromic crown ether merocyanine dyes and study of their reverse photochromism |
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WU DE;XIA PINGFANG;ZHAO HUAMING |
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Abstract：
Five photochromic crown ether merocyanine dyes were prepared by the condensation of 2-methylbenzothiazolium halide incorporating a crown ether structural component on the Ph moiety, with substituted salicylaldehydes in the presence of piperidine. These crown ether merocyanine dyes and the corresponding spiropyran isomer were in reverse photochromic equilibrium where the merocyanine form is more stable than the spiropyran form. |
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Keywords：
ULTRAVIOLET SPECTROPHOTOMETRY
CONDENSATION REACTION
INFRARED SPECTROPHOTOMETRY
MASS SPECTROGRAPHY
PROTON MAGNETIC RESONANCE SPECTROMETRY
THERMOGRAVIMETRY
BENZOTHIAZOLE P
PHOTOCHROMISM
CROWN ETHER
SALICYLIC ALDEHYDE
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Received Revised Online: |
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