A quinoline-based fluorescence "on-off-on" probe for relay identification of Cu2+ and Cd2+ ions

被引：49
作者：
Han, Juan [1 ]
Tang, Xu [2 ]
Wang, Yun [2 ]
Liu, Renjie [2 ]
Wang, Lei [2 ]
Ni, Liang [2 ,3 ]
机构：
[1] Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Peoples R China
[2] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China
[3] Jilin Normal Univ, Minist Educ, Key Lab Preparat & Applicat Environm Friendly Mat, Changchun 130103, Jilin, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2018年 / 205卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Fluorescent probe; 8-hydroxyquinoline; Relay recognition; Cu2+ and Cd2+; ATOMIC-ABSORPTION-SPECTROMETRY; PLASMA-MASS SPECTROMETRY; SOLID-PHASE EXTRACTION; CADMIUM IONS; ZINC IONS; PHYSIOLOGICAL CONDITIONS; SELECTIVE DETECTION; AQUEOUS-SOLUTION; GRAPHENE OXIDE; WATER SAMPLES;
D O I：
10.1016/j.saa.2018.07.081
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A novel fluorescent probe based 8-hydroxyquinoline (8-HQ) has been designed and synthesized. The probe 1 exhibits fast relay recognition performance for Cu2+ and Cd2+ via a fluorescence "on off on" response signal. The probe 1 itself has a strong emission peak at 471 nm in EtOH/H2O (v/v = 1:9) solution with a blue fluorescence. The addition of Cu2+ immediately results in the quenching of fluorescence and the limit of detection is 2.7 x 10(-8) M. Moreover, the formation of [1-Cu2+] complexes can also serve as a new efficient probe system for the relay recognition of Cd2+ with the emergence of a new fluorescence signal under the same conditions. The study also found that the probe 1 has high selectivity for target ions in the presence of other competing ions. The probe 1 has been successfully applied to detect and analyze the trace amount of Cu2+ and Cd2+ in environmental water samples. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：597 / 602
页数：6
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