席夫碱类荧光探针CH3CN/H2O体系检测Cu2+离子

doi:10.3969/j.issn.0253-2778.2016.12.008

中国科学技术大学学报 ›› 2016, Vol. 46 ›› Issue (12): 1015-1021.DOI: 10.3969/j.issn.0253-2778.2016.12.008

• 论著 • 上一篇

席夫碱类荧光探针CH3CN/H2O体系检测Cu2+离子

丁津津，张宇唤，宋新宽，杨青青，王毅朴，马丹阳，汤艳峰，孙同明，朱金丽

1.南通大学化学化工学院，江苏南通 226019；2.南通大学纺织服装学院，江苏南通 226019

收稿日期:2016-11-18 修回日期:2016-12-21 接受日期:2016-12-21 出版日期:2016-12-21 发布日期:2016-12-21
通讯作者: 朱金丽
作者简介:丁津津，女，1983年生，博士/讲师. 研究方向：功能分子设计及量化计算. E-mail: djjing@ntu.edu.cn
基金资助:
国家自然科学基金（21303090, 21376124, 21476117）资助.

A Schiff base fluorescence probe for Cu2+ ion in CH3CN/H2O

DING Jinjin, ZHANG Yuhuan, SONG Xinkuan, YANG Qingqing, WANG Yipu, MA Danyang, TANG Yanfeng, SUN Tongming, ZHU jinli

1.School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; 2.School of Textiles and Clothing, Nantong University, Nantong 226019, China

Received:2016-11-18 Revised:2016-12-21 Accepted:2016-12-21 Online:2016-12-21 Published:2016-12-21

摘要/Abstract

摘要： 以1-氨基-2-萘酚和2,4-二羟基苯甲醛为原料合成了席夫碱(2′,4′-二羟基苯亚甲基亚氨基)-2-萘酚(L)，采用FT-IR，HNMR和ESI-MS对其结构进行了表征.在V(CH3CN)∶V(HEPES)=1∶1（pH=72）缓冲溶液中，研究了L对多种金属离子（Cu2+，Hg2+，Ag+，Pb2+，Cd2+，Zn2+，Ni2+，Co2+，Fe2+，Al3+， Mn2+，Ca2+，Mg2+，K+，Na+）的荧光响应性能.结果表明：L能够通过荧光猝灭响应选择性识别Cu2+，且几乎不受其他金属离子的干扰.在Cu2+浓度为0～25×10-5 mol/L范围内，溶液荧光强度与Cu2+浓度呈现良好的线性关系，据此计算L与Cu2+的结合常数为333×104 L/mol，对Cu2+的检出限为492×10-7 mol/L.L在实际水体中与Cu2+在0～25×10-5 mol/L浓度下依然表现出较好的线性关系.

关键词: 席夫碱, 荧光分子探针, Cu2+, 荧光猝灭

Abstract: A Shiff base (2′4′-dihydroxyl phenylideneimino)-2-naphthol (L) was synthesized from 1-amino-2-naphthol and 2,4-dihydroxybenzaldehyde. The aim compound was characterized by FT-IR, HNMR and ESI-MS. In the solution of V(CH3CN):V(HEPES)=1:1 at pH 7.2, the fluorescence responses of L to many metal ions (Cu2+, Hg2+, Ag+, Pb2+, Cd2+, Zn2+, Ni2+, Co2+, Fe2+, Al3+, Mn2+, Ca2+, Mg2+, K+, Na+) were studied. The results indicate that L displays a fluorescence quenching for Cu2+ with good selectivity and without obvious interferences by other metal ions. In the concentration range of Cu2+ from 0 to 25×10-5 mol/L, the fluorescence intensity of this solution shows a good linear relationship with the concentration of Cu2+. Based on this curve, the binding constant between L and Cu2+ is 333×104 L/mol, and the detection limit of L for Cu2+is calculated to be 4.92×10-7 mol/L.In natural water, L also shows a good linearity with Cu2+ in the concentration range of Cu2+ from 0 to 25×10-5 mol/L.

Key words: Shiff base, fluorescence probe, Cu2+, fluorescence quenching

中图分类号:

O614.2

丁津津，张宇唤，宋新宽，杨青青，王毅朴，马丹阳，汤艳峰，孙同明，朱金丽. 席夫碱类荧光探针CH3CN/H2O体系检测Cu2+离子[J]. 中国科学技术大学学报, 2016, 46(12): 1015-1021.

DING Jinjin, ZHANG Yuhuan, SONG Xinkuan, YANG Qingqing, WANG Yipu, MA Danyang, TANG Yanfeng, SUN Tongming, ZHU jinli. A Schiff base fluorescence probe for Cu2+ ion in CH3CN/H2O[J]. Journal of University of Science and Technology of China, 2016, 46(12): 1015-1021.

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席夫碱类荧光探针CH3CN/H2O体系检测Cu2+离子

A Schiff base fluorescence probe for Cu2+ ion in CH3CN/H2O

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