苯乙烯嘧啶化合物的合成及其作为pH探针的光谱特点  

Synthesis of Styrylpyrimidine and Its Spectral Characteristic as a pH Probe

作　　者：熊小琴[1] 翟秋阁[1] 薛灵芬[1] 郑斐[1] 谢旭[1] 

机构地区：[1]信阳师范学院化学化工学院,信阳464000

出　　处：《应用化学》2012年第11期1262-1265,共4页Chinese Journal of Applied Chemistry

基　　金：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

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)。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.

关 键 词：苯乙烯嘧啶 pH探针 吸收光谱 荧光光谱 

分 类 号：O656[理学—分析化学]