期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 139, 期 27, 页码 9281-9290出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b04550
关键词
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资金
- National Science Foundation [DMR-1507210, DMR-1554954]
- Office of Science, Office of Basic Energy Science, of the U.S. Department of Energy [DE-AC02-05CH11231]
- U.S. DOE Office of Science Facility at Brookhaven National Laboratory [DE-SC0012704]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1507210, 1554954] Funding Source: National Science Foundation
Extensive research has been pursued to develop low-cost and high-performance functional inorganic organic hybrid materials for clean/renewable energy related applications. While great progress has been made in the recent years, some key challenges remain to be tackled. One major issue is the generally poor stability of these materials, which originates from relatively fragile/weak bonds between inorganic and organic constituents. Herein, we report a unique all-in-one (AIO) approach in constructing robust structures with desired properties. Such approach allows formation of both ionic and coordinate bonds within a molecular cluster, which greatly enhances structural stability while maintaining the molecular identity of the cluster and its high luminescence. The novel MO structures are composed of various anionic (CumIm+n)(n-) clusters and cationic N-ligands. They exhibit high luminescence efficiency, significantly improved chemical, thermal and moisture stability, and excellent solution processability. Both temperature dependent photoluminescence experiments and DFT calculations are performed to investigate the luminescence origin and emission mechanism of these materials, and their suitability as energy-saving LED lighting phosphors is assessed. This study offers a new material designing strategy that may be generalized to many other material classes.
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