Design, synthesis and application of a dual-functional fluorescent probe for reactive oxygen species and viscosity

被引:56
作者
Li, Hongyu [1 ,2 ]
Liu, Ya [1 ,2 ]
Li, Xiaoyi [1 ]
Li, Xiaohua [1 ]
Ma, Huimin [1 ,2 ]
机构
[1] Chinese Acad Sci, Key Lab Analyt Chem Living Biosyst, Inst Chem, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
关键词
NIR; Fluorescent probe; Viscosity; Hypochlorous acid (OCl-); Peroxynitrite (ONOO-); Cell imaging; HYPOCHLOROUS ACID; HYDROGEN-PEROXIDE; LIVING CELLS; MYELOPEROXIDASE; MACROPHAGES; HOCL;
D O I
10.1016/j.saa.2020.119059
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
A fluorescence probe based on cyanine fluorophore was designed and synthesized in this work, which can be used to determine viscosity and reactive oxygen species (e.g., OCl-, ONOO-) at different wavelengths. Under a low viscosity medium, the fluorescence quantum yield of the probe is very low; however, with the increase of the medium viscosity, the probe's emission at 571 nm is enhanced by nearly 25-fold due to the inhibition of intramolecular rotations. On the other hand, the probe shows a rapid and linear fluorescence response at 710 nm to OCl- or ONOO- within 1 min. The different spectral response regions of the probe permit the selective detection of both viscosity and reactive oxygen species. Furthermore, the probe is demonstrated to be cell permeable and capable of detecting the viscosity and the total amount of OCl-/ONOO- in living cells with the help of confocal microscope fluorescence imaging. (C) 2020 Elsevier B.V. All rights reserved.
引用
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页数:7
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