Solid-State Photochromic Properties and Mechanism of 1-Phenyl-3-methyl-4-(3-chlorobenzal)-5-hydroxypyrazole 4-Methylthiosemicarbazone

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• 作者：Jixi Guo^&#8224 ; ; Lang Liu^&#8224 ; ; Dianzeng Jia*^&#8224 ; ; Junhua Wang^‡ ; ; Xiaolin Xie^§ ;
• 刊名：Journal of Physical Chemistry A
• 出版年：2009
• 出版时间：February 19, 2009
• 年：2009
• 卷：113
• 期：7
• 页码：1255-1258
• 全文大小：198K
• 年卷期：v.113,no.7(February 19, 2009)
• ISSN：1520-5215

文摘

4-Acylhydroxypyrazoles combined with thiosemicarbazide derivants exhibit excellent photochromism in the crystalline state. Upon irradiation with 365 nm light, colorless enol-form isomers are converted to the yellow keto-form isomers. FT-IR, UV/vis, and fluorescence spectra were used to investigate the photochromic behavior of 1-phenyl-3-methyl-4-(3-chlorobenzal)-5-hydroxypyrazole 4-methylthiosemicarbazone. A possible photochromic mechanism has been proposed based on the analysis of the crystal structure of the sample.