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Three-Dimensional Bimetallic Ammonium K–Eu Nitrate with a Rare (6,6)-Connected Ion Topology Exhibiting Structural Phase Transition and Photoluminescence Properties

Authors :
Zou, Qing-Hua
Wang, Ze-Jie
Wu, Ling-Kun
Feng, Yan
Jiang, Lu-Lu
Li, Jian-Rong
Ye, Heng-Yun
Shi, Chao
Source :
Inorganic Chemistry; June 2024, Vol. 63 Issue: 23 p10817-10822, 6p
Publication Year :
2024

Abstract

A K–Eu bimetallic ammonium metal-nitrate three-dimensional (3D) framework incorporating R-N-methyl-3-hydroxyquinuclidine, (RM3HQ)2KEu(NO3)6(RM3HQ = R-N-methyl-3-hydroxyquinuclidine, 1), was characterized and reported. Distinguishing from the former hybrid rare-earth double perovskites, 1adopts a mixed corner- and face-sharing K+/Eu3+-centered polyhedral connectivity to form a 3D inorganic framework, showing a rare (6, 6)-connected ion topology with a 66framework. Notably, 1exhibits clear phase transition, and the switchable thermodynamic behavior is confirmed by variable-temperature dielectric measurements and second-harmonic generation response. Moreover, 1also shows photoluminescence properties. The activator Eu3+plays a crucial role in this process, leading to a significant narrow emission at 592 nm with a photoluminescence quantum yield (PLQY) of 20.76%. The fluorescence lifetime (FLT) of 1is 4.32 ms. This finding enriches the bimetallic hybrid system for potential electronic and/or luminescence applications.

Details

Language :
English
ISSN :
00201669 and 1520510X
Volume :
63
Issue :
23
Database :
Supplemental Index
Journal :
Inorganic Chemistry
Publication Type :
Periodical
Accession number :
ejs66455263
Full Text :
https://doi.org/10.1021/acs.inorgchem.4c01520