Issue 6, 2018

Phase transition triggered aggregation-induced emission in a photoluminescent uranyl–organic framework

Abstract

When exposed to water, the two-dimensional uranyl–organic layered compound [(CH3)2NH2][(UO2)(BCPBA)]·2DMF·H2O (H3BCPBA = 3,5-bis (4′-carboxylphenoxy) benzoic acid) gradually undergoes a complete single-crystal-to-single-crystal phase transition to [(CH3)2NH2][(UO2)(BCPBA)]·3.4H2O, resulting in an enhanced ligand–ligand interaction between the adjacent layers. This process gives rise to initial quenching of the uranyl photoluminescence followed by subsequent recovery of the photoluminescence with a much elevated intensity, as a unique case of aggregation-induced emission in an extended solid system, further confirmed by DFT analysis on bonding.

Graphical abstract: Phase transition triggered aggregation-induced emission in a photoluminescent uranyl–organic framework

Supplementary files

Article information

Article type
Communication
Submitted
15 Dec 2017
Accepted
19 Dec 2017
First published
19 Dec 2017

Chem. Commun., 2018,54, 627-630

Phase transition triggered aggregation-induced emission in a photoluminescent uranyl–organic framework

X. Wang, Y. Wang, X. Dai, M. A. Silver, W. Liu, Y. Li, Z. Bai, D. Gui, L. Chen, J. Diwu, R. Zhou, Z. Chai and S. Wang, Chem. Commun., 2018, 54, 627 DOI: 10.1039/C7CC09594E

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