Synthesis, X-Ray Crystal Structures and Optical Properties of Novel Substituted Pyrazoly 1,3,4-Oxadiazole Derivatives

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• 作者：Hong-Shui Lv (1)
  Yong-Sheng Xie (2)
  Wei-Yong Liu (1)
  Zhong-Liang Gong (1)
  Bao-Xiang Zhao (1) bxzhao@sdu.edu.cn
• 关键词：1 ; 3 ; 4 ; Oxadiazole &#8211 ; Synthesis &#8211 ; X ; ray &#8211 ; UV&#8211 ; vis absorption &#8211 ; Fluorescence
• 刊名：Journal of Fluorescence
• 出版时间：July 2011
• 出版年：2011
• 期刊代码：34_10530509
• 类别：mt
• 卷：21
• 期：4
• 页码：1797-1804
• 数据来源：sp

摘要

Novel pyrazoly 1,3,4-oxadiazole derivatives were synthesized and characterized by 1H NMR, IR, HRMS and X-ray diffraction analysis. UV–vis absorption and fluorescence properties of these compounds in different solutions showed that the maximum absorption wavelength was not significantly changed in different solvents; however, maximal emission wavelength was red-shifted with the increase of solvent polarity. Absorption λ_max and emission λ_max was less correlated with substituent groups on aryl rings.