对羟基苯乙烯苯并咪唑盐的合成及荧光性质

Syntheses and fluorescence characterization of p-hydroxy styryl benzimidazolium

合成了一种新的苯并咪唑衍生物:1,3-二甲基-2-对羟基苯乙烯基苯并咪唑碘盐,通过元素分析、紫外可见光谱、红外光谱、核磁共振谱及质谱对其结构进行了表征。测定了题头化合物在水溶液中的荧光光谱,讨论了在室温下pH值对其荧光性质的影响,发现题头化合物在pH=7.00时,荧光强度最大。

1,3Dimethyl2(phydroxy styryl) benzimidazolium iodide was synthesized. It was identified by elemental analysis, IR, UV, MS and 1H NMR. Its fluorescence spectrum was determined in aqueous solution and the effect of different pH on fluorescence characterization of title compound was studied at room temperature. Results showed that the fluorescence intensity of title compound was the strongest at pH=7.