Photochromic Dihetarylethylenes. 21. Synthesis and Photochemical Properties of 1,2-Bis{5-(2-benzothiazolyl)-2-ethylthieno-[2,3-<Emphasis Type="Italic">b</Emphasis>]thiophen-3-yl}Hexafluorocyclopentene |
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Authors: | M M Krayushkin M A Kalik D V Kozhinov A Yu Martynkin Yu P Strokach V A Barachevsky |
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Institution: | (1) N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, 119991, Russia;(2) Center for Photochemistry, Russian Academy of Sciences, Moscow, 119421, Russia |
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Abstract: | 1,2-Bis{5-(2-benzothiazolyl)-2-ethylthieno2,3-b]thiophen-3-yl}hexafluorocyclopentene has been synthesized for the first time. It was shown that, unlike analogous derivatives of thieno3,2-b]thiophene, on irradiation with UV light (λ = 313 nm) it did not display photochromic properties, but undergoes an irreversible photoconversion which is accompanied by the display of intense fluorescence. This raises the prospect of using this compound for creating an irreversible photoluminescent recording medium.Dedicated to V. I. Minkin on his 70th birthday.__________Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 360–364, March, 2005.For Part 20 see 1]. |
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Keywords: | 1 2-bis{5-(2-benzothiazolyl)-2-ethylthieno[2 3-b]thiophen-3-yl}hexafluorocyclopentene 1 2-dihetarylethylenes thieno[2 3-b]thiophene derivatives fluorescence |
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