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引用本文:   吴红梅, 郭宇, 曹建芳, 陈强强. 高灵敏度席夫碱镁离子荧光探针的合成及识别性能研究. 分析化学, 2018, 46(3): 379-385. doi:  10.11895/j.issn.0253-3820.171256 [复制]

Citation:   WU Hong-Mei, GUO Yu, CAO Jian-Fang, CHEN Qiang-Qiang. A Highly Sensitive Fluorescent Probe for Detection of Magnesium Ion Based on Novel Schiff's Base. Chinese Journal of Analytical Chemistry, 2018, 46(3): 379-385. doi: 10.11895/j.issn.0253-3820.171256 [复制]

高灵敏度席夫碱镁离子荧光探针的合成及识别性能研究

通讯作者:  郭宇, guoyu@lnut.edu.cn

收稿日期: 2017-09-15

接受日期: 2018-01-11

出版日期: 2018-03-01

基金项目: 本文系国家自然科学基金项目(Nos.21601075,21606118)和辽宁省自然科学基金项目(No.2015020249)资助

A Highly Sensitive Fluorescent Probe for Detection of Magnesium Ion Based on Novel Schiff's Base

Corresponding author:  GUO Yu, guoyu@lnut.edu.cn

Received Date:  2017-09-15

Accepted Date:  2018-01-11

Published Date:  2018-03-01

Fund Project:  This work was supported by the National Natural Science Foundation of China (Nos. 21601075, 21606118) and the Natural Science Foundation of Liaoning Province, China (No. 2015020249)

以对氨基苯甲酰肼为连接基团,分别通过氨基和酰肼基团引入丹磺酰氯和2-羟基-1-萘醛,制备了新型席夫碱(Schiff's base)类荧光探针TZ,实现了对镁离子(Mg2+)的高灵敏度识别。利用电喷雾质谱、紫外光谱、荧光光谱等研究了荧光探针TZ对Mg2+的识别作用与机理。紫外光谱表明,单纯探针TZ在386.5 nm出现了萘醛的特征吸收峰;当探针TZ与Mg2+结合后,在411 nm处出现新的吸收峰,等吸收点为400 nm。荧光光谱表明,探针TZ与Mg2+结合后激发波长红移到400 nm,在发射波长468 nm处荧光强度增强10倍,量子产率为0.57。当向TZ中加入其它金属离子(Li+、Na+、K+、Zn2+、Ca2+、Mn2+、Cd2+、Pb2+、Ag+等)时,荧光强度并未发生明显变化,表明TZ对Mg2+具有较高的选择性。通过ESI-MS滴定和Job's plot曲线确定了TZ与Mg2+的配位模式为1:1的关系,检出限可达0.13 μmol/L。

关键词:   镁离子, 荧光探针, 识别, 席夫碱, 配位
Key words:   Magnesium ion, Fluorescent probe, Detection, Schiff's base, Coordination
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高灵敏度席夫碱镁离子荧光探针的合成及识别性能研究

吴红梅, 郭宇, 曹建芳, 陈强强

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