Laser-induced fabrication of highly branched CuS nanocrystals with excellent near-infrared absorption properties

doi:10.1088/1674-1056/26/7/076102

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.

Keywords: laser-induced photochemical reaction CuS nanodendrites single-crystalline nature near-infrared absorption

Received: 12 January 2017
Revised: 21 March 2017
Accepted manuscript online:

PACS:	61.46.-w	(Structure of nanoscale materials)
	78.40.-q	(Absorption and reflection spectra: visible and ultraviolet)
	78.67.Sc	(Nanoaggregates; nanocomposites)
	82.50.Nd	(Control of photochemical reactions)

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

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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Laser-induced fabrication of highly branched CuS nanocrystals with excellent near-infrared absorption properties

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