title: Highly selective, sensitive and fast-responsive fluorescent sensor for Hg(2+).
abstract: A phenylamine-oligothiophene-based fluorescent sensor 2TBEA was reported. This sensor exhibited highly selective, sensitive and rapid detection of Hg(2+) ion in THF/H2O (7/3, v/v) solution through fluorescence quenching. The detection was unaffected by the coexistence of other competitive metal cations including Na(+), K(+), Ag(+), Ca(2+), Fe(3+), Al(3+), Co(2+), Cu(2+), Ni(2+), Zn(2+), Pb(2+), Cd(2+), Fe(2+) and Cr(3+). A1:1 binding ratio for 2TBEA - Hg(2+) was demonstrated by Job's plot and mole-ratio curves. The coordination process was chemically reversible with EDTA. The detection limit was evaluated to be as low as 6.164×10(-8)M.
authors.affiliation: Shandong Provincial Key Laboratory of Fine Chemicals, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People's Republic of China. Electronic address: qf_niu1216@qlu.edu.cn.
authors.forename: Qingfen
authors.initials: Q
authors.lastname: Niu
authors.affiliation: Shandong Provincial Key Laboratory of Fine Chemicals, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People's Republic of China.
authors.forename: Xingxing
authors.initials: X
authors.lastname: Wu
authors.affiliation: Shandong Provincial Key Laboratory of Fine Chemicals, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People's Republic of China.
authors.forename: Tianduo
authors.initials: T
authors.lastname: Li
authors.affiliation: Shandong Provincial Key Laboratory of Fine Chemicals, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People's Republic of China.
authors.forename: Yuezhi
authors.initials: Y
authors.lastname: Cui
authors.affiliation: Shandong Provincial Key Laboratory of Fine Chemicals, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People's Republic of China.
authors.forename: Shanshan
authors.initials: S
authors.lastname: Zhang
authors.affiliation: School of Chemistry and Chemical Engineering, Shandong University, Shanda Nanlu 27, Jinan 250100, People's Republic of China.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Li
keywords: Fluorescence sensor; Mercury ion; Phenylamine-oligothiophene derivate; Quenching