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

作　　者：杨汝雨 张中义 徐林林 李爽 焦扬 张华 陈明 

机构地区：[1]School of Physics Shandong University [2]School of Science Shandong Jianzhu University [3]School of Physics and Electronics Shandong Normal University

出　　处：《Chinese Physics B》2017年第7期270-275,共6页中国物理B（英文版）

基　　金：Project supported by National Natural Science Foundation of China(Grant Nos.11575102,11105085,11405098,and 11375108);the Fundamental Research Funds of Shandong University,China(Grant No.2015JC007)

摘　　要：We report on the successful fabrication of highly branched Cu S 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 6 μm with an increase of photochemical reaction time（0-40 min）. The absorption spectra of as-prepared Cu S 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.We report on the successful fabrication of highly branched Cu S 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 6 μm with an increase of photochemical reaction time（0-40 min）. The absorption spectra of as-prepared Cu S 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.

关 键 词：laser-induced photochemical reaction Cu S nanodendrites single-crystalline nature near-infrared absorption 

分 类 号：O614.121[理学—无机化学] TB383.1[理学—化学]