Cu2+-selective NIR fluorescence sensor based on heptamethine cyanine in aqueous media and its application

被引：26
作者：
Hanmeng, Oranual [1 ]
Chailek, Nirumon [1 ]
Charoenpanich, Adisri [2 ]
Phuekvilai, Prattana [2 ]
Yookongkaew, Nimnara [2 ]
Sanmanee, Natdhera [3 ]
Sirirak, Jitnapa [1 ]
Swanglap, Pattanawit [1 ]
Wanichacheva, Nantanit [1 ]
机构：
[1] Silpakorn Univ, Dept Chem, Fac Sci, Nakhon Pathom, Thailand
[2] Silpakorn Univ, Fac Sci, Dept Biol, Nakhon Pathom, Thailand
[3] Silpakorn Univ, Fac Sci, Dept Environm Sci, Nakhon Pathom, Thailand
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2020年 / 240卷 / 240期
关键词：
Cyanine; Heptamethine cyanine; Near infrared fluorescence sensor; NIR; Copper sensor; TURN-ON FLUORESCENT; LARGE STOKES SHIFT; SELECTIVE DETECTION; COPPER; CHEMOSENSOR; CELLS; PROBE; DYES; HG2+; AG+;
D O I：
10.1016/j.saa.2020.118606
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A near-infrared (NIR) colorimetric fluorescence sensor, Cy7C3, based on heptamethine cyanine dye was synthesized for determining the presence of Cu2+ ions. The sensor showed highly sensitive fluorescence quenching toward Cu2+ ions in acetonitrile/buffer solution at physiological pH with long emission wavelength of 718 nm. Cy7C3 also provided an excellent selectivity to Cu2+ ions over other competing metal ions, with a low detection limit of 9 ppb, which was lower than the maximum concentration of Cu2+ ions in drinking water of U.S. EPA. Cy7C3 could achieve naked-eye detection of Cu2+ ions via the color change fromblue to colorless, which allowed determination of Cu2+ ions in hydroponic fertilizers. Additionally, the sensor was developed to detect Cu2+ ions in HepG2 cancer cells via fluorescence imaging. (c) 2020 Elsevier B.V. All rights reserved.
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页数：6
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