具比色和可逆选择性识别Cu^(2+)和S^(2-)的罗丹明化学传感器  

Rhodamine-based colorimetric and reversible chemosensor for selectively detection of Cu^(2+) and S^(2-) ions

作　　者：文旭[1] 袁泽利[1] 胡庆红[1] 杨洁[1] 江波[1] 

机构地区：[1]遵义医学院药学院,贵州遵义563003

出　　处：《分子科学学报》2015年第6期509-515,共7页Journal of Molecular Science

基　　金：教育部春晖计划资助项目(教外司留[2012]600);国家自然科学基金资助项目(81360471)

摘　　要：以罗丹明B、水合肼及9-蒽甲醛为原料,合成了一种新型化学传感器AR.其在体积比为1的乙醇/水溶液中能高选择性地识别Cu^(2+),同时在557nm处有显著的紫外吸收,溶液颜色由无色变为紫色.在AR与Cu^(2+)结合后,该体系对S^(2-)显示较高的专属性,且也能引起裸眼颜色变化.此外,通过核磁滴定、EDTA滴定实验验证AR与Cu^(2+)的识别机理为可逆性识别.该探针还可制成溶液和试纸检测1mmol/L级别含Cu^(2+)水样.因此,构建了一种新的基于罗丹明B的高选择性连续识别Cu^(2+)和S^(2-)的可逆型化学传感器.A new type chemosensor AR based on rhodamine B and 9-anthraldehyde has been synthesized.It was found that in ethanol-water（1∶1）mixing solution,AR could selectively recognized with copper ion and induced a remarkable absorption peak at 557 nm with the color of the solution changed from colorless to purple simultaneously.Upon forming AR-Cu2＋ complex,S2- could be selectively recognized with the＂naked eye＂change.In addition,the recognition mechanism of AR and Cu2＋has been proven by 1H NMR titration and EDTA addition experiment.Moreover,AR also can be loaded as test paper for detectiong Cu2＋with mmol/L level in water solution.Therefore,a new rhodamine B based reversible chemosensor that can highly selective and consecutively recognize with Cu2＋ and S2- is developed.

关 键 词：罗丹明衍生物 化学传感器 铜离子识别 硫离子识别 

分 类 号：O657[理学—分析化学]