Triphenylamine-containing imine-linked porous organic network for luminescent detection and adsorption of Cr(VI) in water

Man Wang; Han-Shu Li; Xin Ding; Lizan Jiang; Pengyan Wu; Ruiting Zheng; Guoyue Bao; Guoliang Liu; Jian Wang

doi:10.1039/d2dt01046a

Triphenylamine-containing imine-linked porous organic network for luminescent detection and adsorption of Cr(VI) in water

Dalton Trans. 2022 Jul 12;51(27):10351-10356. doi: 10.1039/d2dt01046a.

Authors

Man Wang¹, Han-Shu Li¹, Xin Ding¹, Lizan Jiang¹, Pengyan Wu¹, Ruiting Zheng¹, Guoyue Bao¹, Guoliang Liu², Jian Wang¹

Affiliations

¹ School of Chemistry and Materials Science & Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. wpyan@jsnu.edu.cn.
² State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China. glliu@njtech.edu.cn.

PMID: 35762382
DOI: 10.1039/d2dt01046a

Abstract

In this study, an imine-linked luminescent porous organic network (PON) has been successfully synthesized by the Schiff-base condensation reaction between 1,2-diphenylethylenediamine and tris(4-formylphenyl)amine. It exhibits strong fluorescence in an aqueous dispersion and can be applied as a luminescent probe for Cr(VI) (CrO₄^2- and Cr₂O₇^2-) with high selectivity and sensitivity (LOD for Cr₂O₇^2- and CrO₄^2- were below 0.35 μM and 0.4 μM, respectively) in a turn-off manner. The possible luminescence sensing mechanism and the adsorption capacity of Cr(VI) are also discussed in detail.