Synthesizes and Properties Research of a Photochromic Diarylethene Bearing a Ethynyl Moiety

Abstract:

A new unsymmetrical photochromic diarylethene compound, 1-(2-Methyl-3-benzothiophene)-2-(5-(4-ethynyl)-2-methylthiophen-3-yl)Perfluorocyclopentene (1o),was synthesized and its photochemical, fluorescence properties were investigated systematically both in solution and PMMA amorphous film. The results showed that this compound exhibited reversible photochromism, changing from colorless to pink after irradiation with 297 nm UV light both in solution and in PMMA amorphous film. The photochromic reaction kinetics indicated that the cyclization processes of 1 belong to the zeroth order reaction and the cycloreversion process belong to the first order reaction.

• Periodical: Advanced Materials Research (Volume 952)
• Pages: 79-83
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.952.79
• Online since: May 2014
• Authors: Feng Xia Sun, Shi Qiang Cui, Shou Zhi Pu*
• Keywords: Diarylethene, Fluorescence, Kinetic, Photochromism

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