A thiamonomethinecyanine probe for detection of Pb2+ based on transformation from dimer to monomer by aptamer

被引：0
|
作者：
Li-Jia Yu
Han Zhao
Ying-Lin Zhang
Xiao-Dong Shi
Chun-Guang Ding
机构：
[1] National Center for Occupational Safety and Health,
[2] NHC,undefined
来源：
Chemical Papers | 2021年 / 75卷
关键词：
Thiamonomethinecyanine dye; Pb; detection; Dimers and monomers; Assembly and disassembly; G-quadruplex;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A simple method based on a thiamonomethinecyanine dye (dye2) and duplex DNA system was constructed to detect Pb2+ by UV–Vis spectra. The absorption spectra of dye2 show dimers and monomers peak and the monomer–dimer equilibrium could be regulated with environmental change. Duplex DNA as a template was used to regulate distinct aggregates of cyanine dye in the presence of Pb2+. This system shows a specific absorption signal for Pb2+ detection.
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页码：1413 / 1419
页数：6
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