Efficient and tunable white-light emission of metal-organic frameworks by iridium-complex encapsulation.
Efficient and tunable white-light emission of metal-organic frameworks by iridium-complex encapsulation.
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通过铱络合物封装实现金属有机框架的高效且可调谐的白光发射。
DOI:
10.1038/ncomms3717
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发表时间:
2013
影响因子:
16.6
通讯作者:
Li, Jing
中科院分区:
文献类型:
--
作者:
Sun, Chun-Yi;Wang, Xin-Long;Zhang, Xiao;Qin, Chao;Li, Peng;Su, Zhong-Min;Zhu, Dong-Xia;Shan, Guo-Gang;Shao, Kui-Zhan;Wu, Han;Li, Jing
Metal–organic frameworks (MOFs) are well known for their tunable structure and porosity. Many studies have shown they are promising for various important applications, for which their performance can be further enhanced by encapsulating functional species, such as luminescent guest molecules, within the frameworks. Although numerous MOFs are luminescent, very few emit white light and their quantum yield is usually low. Here we report a strategy to achieve efficient white-light emission by encapsulating an iridium complex in the MOF cavity. A mesoporous blue-emitting MOF is prepared as host to encapsulate a yellow-emitting iridium complex, [Ir(ppy)2(bpy)]+. The resultant composites emit bright white light with good colour quality (for example, Commission International de I’Eclairage coordinates, colour-rendering index and correlated colour temperature of (0.31, 0.33), 84.5 and 5409 K, respectively), and high quantum yield up to 115 °C. This strategy may open new perspectives for developing high-performance energy-saving solid-state lighting materials. Although many metal–organic frameworks are luminescent, few are capable of white-light emission. Here, the authors incorporate a yellow-emitting guest molecule into the cavities of a blue-emitting metal–organic framework, and tune the composition to emit white light with relatively high quantum yield.
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