一种Cu(Ⅱ)的高识别水溶型化学传感器  

A aqueous type chemosensor for high selective recognition to copper(Ⅱ)

作　　者：焦琪悦[1] 张强[1] 

机构地区：[1]内蒙古师范大学化学与环境科学学院,内蒙古呼和浩特010022

出　　处：《化学试剂》2013年第6期543-546,550,共5页Chemical Reagents

基　　金：内蒙古自然科学基金资助项目(2009MS0203);研究生创新基金项目(CXJJS11049)

摘　　要：以二乙醇胺和2-羟基-5-硝基苄基溴为原料合成了N-(2-钾氧基-5-硝基苄基)二乙醇钾基胺传感器分子(L)。由元素分析、1HNMR等进行了结构表征。在水溶剂中采用紫外-可见光谱法研究了H+、Li+、Na+、K+、Mg2+、Ca2+、Mn2+、Co2+、Ni2+、Cu2+、Zn2+、Cd2+、Hg2+及Pb2+对L光谱的影响。结果表明,L分子的紫外-可见光谱仅对体系中的H+和Cu2+有特殊的选择敏感性,在体系的pH或Cu2+浓度增大时,L在311 nm处的吸收峰会发生不同程度的红移并伴随强度的增大;此基于H+和Cu2+离子调制传感器L分子内电荷转移跃迁的传感机制。N- （ 2-Potassiumoxy-5 -nitrobenzyl ） -dipotassiumoxy- ethylamine of chemosensor molecule L was synthesized starting from diethanolamine with 2-hydroxy-5-nitrobenzylbro- mide, and its structure was characterized by ＇HNMR and elementary analysis. The influence of H ＋ , Li ＋ , Na ＋ , K ＋ , Mg2＋ ,Ca2＋ ,Mn2＋ ,Cos＋ ,Ni2＋ ,Cu2＋ ,Zn2＋ ,Cd2＋ ,Hg2＋ and Pb2＋ on the spectra of L were investigated by the UV-Vis in water solvent. The result indicated that the UV-Vis spectraof L behaved special selectivity and sensitivity to H ＋ and Cu2＋ . Absorption peak of L at 311 nm was exhibited red-shift and going up with increasing pH value and the concentration of Cu2＋ in the system. This sensor is based on the principle as to H ＋ and Cu2＋ modulating intramoleeular charge transfer of L.

关 键 词：N-(2-钾氧基-5-硝基苄基)二乙醇钾基胺 合成 光谱 选择性传感 Cu(Ⅱ) 

分 类 号：O625.6[理学—有机化学] O614[理学—化学]