期刊
CHEMISTRY OF MATERIALS
卷 29, 期 19, 页码 8093-8099出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.7b01790
关键词
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资金
- Chinese Academy of Sciences [XDB20000000]
- 973 Program [2014CB932101, 2013CB933200]
- National Natural Science Foundation of China [21671189]
- Natural Science Foundation of Fujian Province [2017J01029]
- Youth Innovation Promotion Association CAS
We have designed and synthesized a series of two-dimensional materials featuring with a (3,6)-connected kgd layer, in which an unprecedented anionic Cu6I7- cluster was first trapped through a cation-induced synthetic strategy. The emission colors of these cluster-based luminophores gradually shift from blue to yellow as the monovalent cations (Li+, Na+, NH4+, K+, TEA(+)) located between the neighboring layers changed. SCXRD analyses discover that the variation of the emission may be attributed to the transformation of the hourglass-shaped Cu6I7- cluster. The bright, tunable, and broad luminescent emissions make them promising candidates as phosphors for light-emitting diodes (LEDs). Particularly, compound 1-TEA emitting intensive yellow light with high luminescence quantum efficiency (QY = 79.9%) shows extremely high thermal, pH, organic solvent, and mechanical photostabilities. By employing it as a yellow phosphor, we fabricate a series of white lighting materials with high color rendering index (CRI).
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