Fluorescence quenching of water-soluble conjugated polymer by metal cations and its application in sensor.
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.
Chen
Yan-Guo
YG
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China.
Zhao
Dan
D
He
Zhi-Ke
ZK
Ai
Xin-Ping
XP
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*
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