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A novel coumarin-benzopyrylium based near-infrared fluorescent probe for Hg2+ and its practical applications
被引:17
|作者:
Lv, Hongshui
[1
]
Sun, Haiyan
[1
]
机构:
[1] Qilu Univ Technol, State Key Lab Biobased Mat & Green Papermaking, Shandong Acad Sci, Jinan 250353, Peoples R China
关键词:
Ratiometric;
NIR;
Hg2+;
Food analysis;
Bioimaging;
RAPID DETECTION;
IN-VIVO;
IONS;
MERCURY;
CHEMODOSIMETER;
MICE;
D O I:
10.1016/j.saa.2021.120527
中图分类号:
O433 [光谱学];
学科分类号:
0703 ;
070302 ;
摘要:
A novel colorimetric and ratiometric NIR fluorescent probe for Hg2+ was designed and synthesized based on a coumarin-benzopyrylium platform. The ring-open form of the probe exhibits NIR absorption (670 nm) and emission (720 nm). The probe shows high sensitivity, high selectivity and rapid response (30 s) to Hg2+. The detection limit was as low as 6.94 nM. The probe shows high stability in a wide pH range from 2 to 10. Moreover, the probe can be employed for detecting Hg2+ in food and biological samples. (C) 2021 Elsevier B.V. All rights reserved.
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页数:8
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