Ultrabroad near-infrared photoluminescence from ionic liquids containing subvalent bismuth.
Ultrabroad near-infrared photoluminescence from ionic liquids containing subvalent bismuth.
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DOI：
10.1364/ol.36.000100
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发表时间：
2011-01
期刊：
影响因子：
3.6
通讯作者：
Hong-Tao Sun;Y. Sakka;M. Fujii;N. Shirahata;Hong Gao
中科院分区：
文献类型：
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作者：
Hong-Tao Sun;Y. Sakka;M. Fujii;N. Shirahata;Hong Gao
我们已经证明，含低价铋的路易斯酸卤铝酸盐离子液体（IL）可以用作近红外（NIR）发光材料。拉曼光谱和吸收光谱证明了Bi（5）（3+）和Bi（+）在液相中共存。Bi（5）（3+）和Bi（+）发射体在这种Lewis酸性液体的稳定下表现出超宽的近红外光致发光，寿命约为1 μs。我们设想铋激活的离子液体不仅可以丰富软发光材料的成熟光谱，而且还可以促进由其他p区元素激活的新型光子材料的设计。
We have shown that Lewis-acidic halogenoaluminate ionic liquid (IL) containing subvalent bismuth can be used as a near-IR (NIR) luminescent material. Raman and absorption spectra evidence the coexistence of Bi(5)(3+) and Bi(+) in the liquid. The Bi(5)(3+) and Bi(+) emitters, stabilized by this Lewis-acidic liquid, demonstrate ultrabroad NIR photoluminescence with a lifetime of around 1 μs. We envisage that the bismuth activated ILs would not only enrich the well-established spectrum of soft luminescent materials but also might promote the design of novel photonic materials activated by other p-block elements.