一种快速响应和高选择性的锌离子荧光探针  

A rapid responsive and highly selective fluorescent probe for zinc ion

作　　者：张丽君[1] 尹炳柱[1] 

机构地区：[1]延边大学长白山生物资源与功能分子教育部重点实验室,吉林延吉133002

出　　处：《延边大学学报（自然科学版）》2012年第1期50-53,共4页Journal of Yanbian University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(21062022);教育部博士点基金资助项目(20102201110001)

摘　　要：合成了一种基于2-苯基苯并噻唑荧光团的荧光探针,并用荧光和紫外光谱法研究了对不同阳离子的识别能力.研究表明:该探针在乙腈溶液中对锌粒子显示出高选择性和高灵敏性的响应,而对其他阳离子的响应则不明显,因此该方法可实现对锌粒子的检测;其机理是探针与锌粒子的络合阻止了主体分子的激发态分子内质子转移过程,使荧光增强而致.A 2-phenylbenzothiazole based fluorescent probe is synthesized and its recognition ability for various metal ions is tested by fluorescence and UV spectrophotometries.The resurts show that the probe shows a highly selectivity and sensibility for Zn2＋ over other various cations in acetonitrile solvent,so this method can achieve the detection of Zn2＋.The mechanism is proved that complexation of the probe with Zn2＋ hindered the excited-state intramolecular proton transfer process which enhanced fluorescence intensity.

关 键 词：荧光化学传感器 2-苯基苯并噻唑 锌离子检测 激发态分子内质子转化 

分 类 号：O625.25[理学—有机化学]