应用化学

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苯乙烯嘧啶化合物的合成及其作为pH探针的光谱特点

熊小琴*,翟秋阁,薛灵芬,郑斐,谢旭   

  1. (信阳师范学院化学化工学院 信阳 464000)
  • 收稿日期:2011-12-30 修回日期:2012-03-19 出版日期:2012-11-10 发布日期:2012-11-10
  • 通讯作者: 熊小琴,讲师; Tel:0376-6390207; E-mail:xxq_smile@163.com; 研究方向:有机合成、生物化学
  • 基金资助:
    河南省高校科技创新人才基金(2010HASTIT025)河南省科技创新人才项目(104100510020)河南省教育厅自然科学研究项目(2009A150023)资助

Synthesis of Styrylpyrimidine and Its Spectral Characteristic as a pH Probe

XIONG Xiaoqin*, ZHAI Qiuge, XUE Lingfen, ZHENG Fei, XIE Xu   

  1. (Department of Chemistry,Xinyang Normal University,Xinyang 464000,China)
  • Received:2011-12-30 Revised:2012-03-19 Published:2012-11-10 Online:2012-11-10
  • Contact: xiong

摘要: 合成并表征了化合物4,6-二[(4′-二乙基胺基)苯乙烯基]嘧啶-2-醇。 通过研究该化合物在不同pH值的磷酸盐缓冲溶液中紫外-可见吸收光谱和荧光光谱的变化,发现λmax约为500 nm的吸收峰在溶液pH=6.78中吸收强度最大。 荧光发射峰随着pH值的升高逐渐减弱,直至淬灭(pH=5.51)。

关键词: 苯乙烯嘧啶, pH探针, 吸收光谱, 荧光光谱

Abstract: 4,6-Bis[(4′-diethylamino) styryl] pyrimidin-2-ol was synthesized and characterized. The UV-Vis and fluorescent properties were studied in phosphate buffer solutions at different pH value. The UV-Vis spectral results indicated that the peak located at ~500 nm reaches maximal intensity at pH=6.78. The fluorescent spectra data suggested that the intensity of emission peak decreased with increasing pH value. The fluorescence was quenched when the pH was 5.51.

Key words: styrylpyrimidine, pH probe, absorption spectrum, fluorescence spectrum

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