title: A Turn-on and Reversible Fluorescence Sensor for Zinc Ion Based on 4,5-Diazafluorene Schiff Base.
abstract: A new 4,5-diazafluorene-based fluorescent chemosensor has been synthesized by Schiff base condensation of 9,9-bis(3,5-dimethyl-4-aminophenyl)-4,5-diazafluorene with salicylaldehyde. The interaction of Schiff base with different metal ions has been studied over photofluorescent spectra. The results showed that Schiff base exhibited 194-fold enhancements in fluorescence at 465 nm after Zn(2+) ions. Such fluorescent responses could be detected by naked eye under UV-lamp. The complex solution (L-Zn(2+)) exhibited reversibility with EDTA.
authors.affiliation: Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, 430073, People's Republic of China.|College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China. zhangshj@lzu.edu.cn.
authors.forename: ShuJiang
authors.initials: S
authors.lastname: Zhang
authors.affiliation: College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China.
authors.forename: ChenLiang
authors.initials: C
authors.lastname: Gong
authors.affiliation: College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China.
authors.forename: JianZhi
authors.initials: J
authors.lastname: Wang
authors.affiliation: Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, 430073, People's Republic of China. psfwang@wit.edu.cn.
authors.forename: Feng
authors.initials: F
authors.lastname: Wang
keywords: Fluorescent sensor; Schiff base; Turn-on; Zn2+ ion