Photocontrolled self-assembly of silica nanoparticles at two scales

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:531

Article

Peng, Chang¹  Zeng, Tianqi¹  Yu, Yong¹  Li, Ling^1,2  Wu, Ruoxi³ 

[1] Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China

[2] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China

[3] Texas A&M Univ, Zachry Dept Civil Engn, 3126 TAMU, College Stn, TX 77840 USA

关键词: Self-assembly;    Controlled morphologies;    Photoresponse;    Superhydrophobic;   

DOI  :  10.1016/j.jcis.2018.07.054

来源: Elsevier

【 摘 要 】

The photocontrolled self-assembly of coumarin-functionalized silica nanoparticles is fabricated and investigated. When these nanoparticles are uniformly dispersed in CHCl3 solution under 365 nm light illumination, four novel kinds of patterns are self-assembled on the bottom of glass beakers: circle patterns, square plate patterns, semi-annular and annular patterns, swirling patterns, which can be seen with the naked eye. Furthermore, these four patterns exhibit similar nanoscale morphologies: ring-like necklaces in nanoscale dimensions, and reveal interesting superhydrophobic property. In short, there exist two kinds of self-assembly of functionalized silica nanoparticles in two radically different dimensions, which can be potentially applied in self-cleaning fields and the construction of photocontrolled nanoscale structures and macroscale structures. (C) 2018 Elsevier Inc. All rights reserved.

【 授权许可】

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