title: Fluorescence quenching of water-soluble conjugated polymer by metal cations and its application in sensor.
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.
authors.affiliation: College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China.
authors.forename: Yan-Guo
authors.initials: YG
authors.lastname: Chen
authors.forename: Dan
authors.initials: D
authors.lastname: Zhao
authors.forename: Zhi-Ke
authors.initials: ZK
authors.lastname: He
authors.forename: Xin-Ping
authors.initials: XP
authors.lastname: Ai
mesh_terms: D001360:Avidin / Q000737:chemistry*; D001710:Biotin / Q000737:chemistry*; D002412:Cations / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D008024:Ligands; D019216:Metals, Heavy / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence; D019809:Streptavidin / Q000737:chemistry*
chemical_list: D002412:Cations; D005456:Fluorescent Dyes; D008024:Ligands; D019216:Metals, Heavy; C506109:Poly(2,5-methoxy-propyloxy sulfonate phenylene vinylene); D011145:Polyvinyls; D001360:Avidin; D001710:Biotin; D019809:Streptavidin