含水溶液中香豆素类探针对碘离子的荧光增强识别  

Fluorescence-enhancement Sensor for I^- Based on Coumarin in Aqueous Solution

作　　者：马文辉[1,2] 夏威[2] 徐群[2] 韩宏彦[2] 宋波[2] 孙丽微[2] 梁春花[2] 

机构地区：[1]齐齐哈尔大学材料科学与工程学院,齐齐哈尔161006 [2]齐齐哈尔大学精细化工黑龙江省普通高校重点实验室,齐齐哈尔161006

出　　处：《化学学报》2012年第7期917-920,共4页Acta Chimica Sinica

基　　金：黑龙江省普通高等学校青年学术骨干支持计划(No.1152G054);齐齐哈尔市科学技术计划(No.GYGG2010-05-1)资助项目~~

摘　　要：设计合成了新型含硫代半卡巴肼结构的香豆素类I-荧光分子探针CI,其结构用1H NMR,13C NMR,GC/MS和元素分析进行了表征,并考察了其光谱性能.结果表明CI在中性缓冲溶液中,在常见阴离子(F-,Cl-,Br-,I-,AcO-,HSO-4,H2PO-4)中能够专一性地识别I-.滴加I-后引起吸收光谱蓝移80 nm,荧光光谱蓝移6 nm,荧光增强5.9倍,溶液荧光由黄绿色变为亮蓝色.其它阴离子的存在并未干扰CI对I-的检测.A novel fluorescent molecular sensor CI based on coumarin thiosemicarbazide for I^- was designed and synthesized. The structure of CI was identified by tH NMR, ^13C NMR, GC/MS and elemental analysis, and the spectral properties of CI was investigated. In neutral buffer solution, CI exhibited specific recognition for I^- among anions （F^-, CI^-, Br^-, I^-, AcO^-, HSO^- 4, H2PO^- 4）. The addition of I^- led to 80 nm blue-shift in absorbance maximum, a 6 nm blue-shift in fluorescence maximum, a 5.9-fold fluorescence enhancement and an obvious fluorescence change from yellowish green to brilliant blue. Other anions had no interference for CI to detect I^-.

关 键 词：荧光分子探针 I- 香豆素 硫代半卡巴肼 荧光增强 

分 类 号：O657.3[理学—分析化学]