Fluorescence quenching of water-soluble conjugated polymer by metal cations and its application in sensor |
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Authors: | Chen Yan-Guo Zhao Dan He Zhi-Ke Ai Xin-Ping |
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Affiliation: | College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China. |
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Abstract: | The effects of different metal cations on the fluorescence of water-soluble conjugated polymer (CP) and their quenching mechanism have been explored. Most transition metal cations, especially noble metal cations, such as Pd2+, Ru3+, and Pt2+ possessed higher quenching efficiency to CP fluorescence than that of the main group metal cations and other transition metal cations, which have filled or half-full outmost electron layer configurations. Base on this, rapid, sensitive detection of noble metal cations can be realized and a novel quencher-tether-ligand (QTL) probe was developed to detect avidin and streptavidin. |
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