稠氮杂芳环修饰的Salen配体合成及离子识别性能研究  

Synthesis and Ions Recognition of Salen Ligand Modified by Aromatic Heterocyclic

作　　者：康裕 李淼[1] 黄杰 段中余[1] KANG Yu;LI Miao;HUANG Jie;DUAN Zhong-yu(School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China)

机构地区：[1]河北工业大学化工学院

出　　处：《化学试剂》2018年第7期679-682,共4页Chemical Reagents

基　　金：国家自然科学基金资助项目(51473045)

摘　　要：由于低浓度的金属离子也能够对环境、生物体产生毒害,因此痕量离子识别具有现实意义。基于Salen配体的荧光性有望专一性识别金属离子,以乙酰丙酮、乙二胺、2-甲基苯并噻唑为原料合成[ONNO]型Salen配体,通过1HNMR、13CNMR、红外等手段进行表征。紫外光谱研究发现,Salen配体与多种金属离子具有配位作用;荧光光谱研究表明,Salen配体与Co2＋结合,荧光显著减弱,检测限为3.16×10-5mol/L,并且具有较好的抗干扰能力;荧光滴定分析说明,Salen配体与Co2＋为1∶1配位。结果表明,Salen配体是一种能够选择性识别Co2＋的荧光猝灭型探针,在环境监测等领域具有潜在的应用价值。Even low concentrations of metal ions can also be toxic to the environment and biometric,it is practical significance to learn identification of trace ions.Based on the fluorescence of Salen ligands,the metal ions can be specifically identified. In this work,[ONNO] Salen ligand was synthesized from acetylacetone,ethylenediamine and 2-methylbenzothiazole which was confirmed with ~1HNMR,^（13）CNMR and IR.UV spectroscopy showed Salen ligand has coordination with many metal ions. Fluorescence spectroscopy showed that the fluorescence of Salen ligand and Co^（2＋） significantly decreased,and the detection limit was down to 3. 16×10^（-5） mol/L which has an excellent anti-interference ability.Fluorescence titration showed that the Salen ligand and Co^（2＋）1 ∶1 coordination.The results show that Salen ligand is a fluorescence quenching probe which can selectively recognize Co^（2＋） and has potential applications in environmental monitoring and other fields.

关 键 词：SALEN配体 CO^2+ 离子识别 荧光光谱 

分 类 号：O657[理学—分析化学]