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Laser-induced fabrication of highly branched CuS nanocrystals with excellent near-infrared absorption properties |
Ruyu Yang(杨汝雨)1, Zhongyi Zhang(张中义)1, Linlin Xu(徐林林)1, Shuang Li(李爽)2, Yang Jiao(焦扬)3, Hua Zhang(张华)1, Ming Chen(陈明)1 |
1 School of Physics, Shandong University, Jinan 250100, China; 2 School of Science, Shandong Jianzhu University, Jinan 250101, China; 3 School of Physics and Electronics, Shandong Normal University, Jinan 250014, China |
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Abstract We report on the successful fabrication of highly branched CuS nanocrystals by laser-induced photochemical reaction. Surprisingly, the single-crystalline nature with preferential alignment of the (107) orientation can be well improved during the moderate growth process. The branch length drastically increases from about 5 nm to 6μm with an increase of photochemical reaction time (0–40 min). The absorption spectra of as-prepared CuS nanodendrites show that localized surface plasmon resonance (LSPR) peaks can be modulated from about 1037 nm to 1700 nm with an increase of branch length. Our results have a promising potential for photodynamic therapy and biological imaging application.
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Received: 12 January 2017
Revised: 21 March 2017
Accepted manuscript online:
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PACS:
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61.46.-w
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(Structure of nanoscale materials)
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78.40.-q
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(Absorption and reflection spectra: visible and ultraviolet)
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78.67.Sc
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(Nanoaggregates; nanocomposites)
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82.50.Nd
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(Control of photochemical reactions)
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Fund: Project supported by National Natural Science Foundation of China (Grant Nos.11575102,11105085,11405098,and 11375108) and the Fundamental Research Funds of Shandong University,China (Grant No.2015JC007). |
Corresponding Authors:
Ming Chen
E-mail: chenminglishuang@gmail.com
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Cite this article:
Ruyu Yang(杨汝雨), Zhongyi Zhang(张中义), Linlin Xu(徐林林), Shuang Li(李爽), Yang Jiao(焦扬), Hua Zhang(张华), Ming Chen(陈明) Laser-induced fabrication of highly branched CuS nanocrystals with excellent near-infrared absorption properties 2017 Chin. Phys. B 26 076102
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