期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 6, 页码 1600-1604出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201610708
关键词
amorphous phases; biosensing; molybdenum oxides; molybdenum sulfides; surface plasmon resonance
资金
- National Natural Science Foundation of China [51173170, 21571157]
- Innovation Talents Award of Henan Province [114200510019]
- Key program of science and technology from Zhengzhou Bureau of science and technology [121PZDGG213]
As a remarkable class of plasmonic materials, two dimensional (2D) semiconductor compounds have attracted attention owing to their controlled manipulation of plasmon resonances in the visible light spectrum, which outperforms conventional noble metals. However, tuning of plasmonic resonances for 2D semiconductors remains challenging. Herein, we design a novel method to obtain amorphous molybdenum oxide (MoO3) nanosheets, in which it combines the oxidation of MoS2 and subsequent supercritical CO2-treatment, which is a crucial step for the achievement of amorphous structure of MoO3. Upon illumination, hydrogen-doped MoO3 exhibits tuned surface plasmon resonances in the visible and near-IR regions. Moreover, a unique behavior of the amorphous MoO3 nanosheets has been found in an optical biosensing system; there is an optimum plasmon resonance after incubation with different BSA concentrations, suggesting a tunable plasmonic device in the near future.
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