title: A reusable thioether-rich crown-based fluorescent sensor for the detection and removal of mercuric ions.
abstract: Based on the thioether-rich crown receptor, we describe a naphthalimide based bifunctional fluorescent sensor (FS-G) for simultaneous detection and separation of trace Hg(2+) in water. FS-G exhibited excellent selectivity toward Hg(2+) in aqueous environment and showed 5-fold increase in fluorescence emission intensity upon the addition of Hg(2+). A good linearity was observed between the fluorescence enhancement and the dose of Hg(2+) with a lower detection limit of 33.4ppb. Additionally, adsorption capacity of FS-G is 7.4mgg(-1). FS-G can be easily regenerated when treated with dimercaptosuccinic acid. These results indicate that FS-G has potential applications for detection and removal of trace Hg(2+) in water.
authors.affiliation: State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Tang
authors.affiliation: State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Yiqiao
authors.initials: Y
authors.lastname: Qin
authors.affiliation: State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Yufang
authors.initials: Y
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Xuhong
authors.initials: X
authors.lastname: Qian
authors.affiliation: State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China. Electronic address: wpzhu@ecust.edu.cn.
authors.forename: Weiping
authors.initials: W
authors.lastname: Zhu
keywords: Detection; Fluorescent sensor; Mercuric ions; Removal; Reusable