Journal
DALTON TRANSACTIONS
Volume 51, Issue 27, Pages 10351-10356Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2dt01046a
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Funding
- Major Basic Research Project of Natural Science Foundation of the Jiangsu Higher Education Institutions [21KJA150001]
- Natural Science Foundation of Jiangsu Province for Outstanding Youth [BK20180105]
- TAPP of Jiangsu Higher Education Institutions
- Postgraduate Research & Practice Innovation Program of Jiangsu Normal University
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In this study, a luminescent porous organic network (PON) connected by imine linkages was successfully synthesized. The PON showed strong fluorescence in water and demonstrated high selectivity and sensitivity for the detection of Cr(vi) species (CrO42- and Cr2O72-) in a turn-off manner. The possible luminescence sensing mechanism and the adsorption capacity of Cr(vi) were also discussed in detail.
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) (CrO42- and Cr2O72-) with high selectivity and sensitivity (LOD for Cr2O72- and CrO42- were below 0.35 mu M and 0.4 mu M, respectively) in a turn-off manner. The possible luminescence sensing mechanism and the adsorption capacity of Cr(vi) are also discussed in detail.
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