title: Poly(1-amino-5-chloroanthraquinone): highly selective and ultrasensitive fluorescent chemosensor for ferric ion.
abstract: Poly(1-amino-5-chloroanthraquinone) (PACA) was firstly synthesized by a chemically oxidative interfacial polymerization. The PACA has been developed as a fluorescent sensor for the determination of Fe(III) in semi-aqueous solution at pH 7.0. The sensor exhibited remarkably high sensitivity toward Fe(3+) since the fluorescence of the polymer could be significantly quenched even though trace Fe(3+) was added. The sensor showed a linear fluorescence emission response over a wide concentration range from 1.0 × 10(-10) to 1.0 × 10(-4) M, with an ultra-low detection limit of 2.0 × 10(-11) M. The quenching of the fluorescence was found to be static one due to the formation of non-fluorescent complex in the ground state.
authors.affiliation: Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, China. sjhuang@kmust.edu.cn
authors.forename: Shaojun
authors.initials: S
authors.lastname: Huang
authors.forename: Ping
authors.initials: P
authors.lastname: Du
authors.forename: Chungang
authors.initials: C
authors.lastname: Min
authors.forename: Yaozu
authors.initials: Y
authors.lastname: Liao
authors.forename: Hui
authors.initials: H
authors.lastname: Sun
authors.forename: Yubo
authors.initials: Y
authors.lastname: Jiang