化学
卤化物
光致发光
量子产额
金属
发光
金属卤化物
分析化学(期刊)
无机化学
物理化学
光电子学
荧光
光学
材料科学
有机化学
物理
作者
Timothy M. McWhorter,Zheng Zhang,Tielyr D. Creason,L.M. Thomas,Mao‐Hua Du,Bayram Saparov
标识
DOI:10.1002/ejic.202100954
摘要
Abstract Herein, a new family of hybrid metal halides, (DMAP) 2 MBr 4 (M = Cu, Zn), featuring zero‐dimensional (0D), pseudo‐layered crystal structures containing isolated molecular 4‐dimethylaminopyridinium (DMAP, C 7 H 11 N 2 + ) cations and MBr 4 2− tetrahedral anions are reported. (DMAP) 2 MBr 4 show remarkable long‐term stability, with no signs of degradation after one year of ambient air exposure. The reported solution synthesis affords large crystals measuring up to 1 cm, which showed significant response to soft 8 keV X‐ray photons when implemented into X‐ray detectors. Furthermore, (DMAP) 2 ZnBr 4 demonstrates tunable color light emission properties, which is attributed to the organic molecular units based on our combined experimental and computational results. The measured photoluminescence quantum yield (PLQY) for (DMAP) 2 ZnBr 4 is 7.35 %, a remarkable enhancement of emission efficiency as compared to a weak emission from the organic precursor. The inexpensive and earth‐abundant chemical compositions and ease of preparation of the new hybrid metal halides make them promising candidates for optical and electronic applications.
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