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

A thiamonomethinecyanine probe for detection of Pb2+ based on transformation from dimer to monomer by aptamer
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基于适体从二聚体转化为单体的硫代甲川花青探针用于检测 Pb2

DOI:
10.1007/s11696-020-01389-7
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发表时间:
2020-10
期刊:
影响因子:
2.2
通讯作者:
丁春光
丁春光
中科院分区:
化学4区
文献类型:
--
作者:
于丽佳;赵晗;张颖琳;师晓栋;丁春光

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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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