A Water-Stable Dual-Channel Luminescence Sensor for UO2(2+) Ions Based on an Anionic Terbium(III) Metal-Organic Framework.

Author(s) Ye, J.; Bogale, R.F.; Shi, Y.; Chen, Y.; Liu, X.; Zhang, S.; Yang, Y.; Zhao, J.; Ning, G.
Journal Chemistry
Date Published 2017 Jun 07
Abstract

A stable 3D Tb(III) -based metal-organic framework [Tb(BPDC)2 ]⋅(CH3 )2 NH2 (DUT-101) was synthesized, and it is the first efficient dual-channel luminescence sensor for aqueous UO2(2+) ions. DUT-101 contains an anionic three-dimensional framework and protonated dimethylamine molecules embedded within the channels. The intense green emission of DUT-101 could be highly selectively and sensitively quenched by UO2(2+) ions even in the presence of other competing metal ions. A possible sensing mechanism was proposed based on both suppression of luminescence resonance energy transfer and enhancement of intermolecular electron transfer. Furthermore, visual green fluorescent test papers based on DUT-101 were fabricated and could be used to discriminate UO2(2+) ions among various metal ions.

DOI 10.1002/chem.201700713
ISSN 1521-3765
Citation Ye J, Bogale RF, Shi Y, Chen Y, Liu X, Zhang S, et al. A Water-Stable Dual-Channel Luminescence Sensor for UO2(2+) Ions Based on an Anionic Terbium(III) Metal-Organic Framework. Chemistry. 2017;23(32):7657-7662.

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