Self-assembly and wetting properties of gold nanorod–CTAB molecules on HOPG

Beilstein Journal of Nanotechnology

Floor Derkink^1¹  Imtiaz Ahmad^1^2^3²  Tim Boulogne^1³ 

[1] Department of Physics, University of Peshawar, Khyber Pakhtunkhwa 25120, Pakistan^2;Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, P. O. Box 217, 7500AE Enschede, The Netherlands^1;School of Chemical and Materials Engineering, National University of Sciences and Technology, Islamabad 44000, Pakistan^3

关键词: CTAB;    gold nanorods;    micelles;    self-assembly;    wettability;   

DOI  :  10.3762/bjnano.10.69

学科分类：地球科学(综合)

来源: Beilstein - Institut zur Foerderung der Chemischen Wissenschaften

【 摘 要 】

The formation of self-assembled superstructures of cetyltrimethylammonium bromide (CTAB) after drying on a nonwetting highly ordered pyrolytic graphite (HOPG) surface have been investigated using scanning electron microscopy (SEM) and atomic force microscopy (AFM). Although SEM did not reveal coverage of CTAB layers, AFM showed not only CTAB assembly, but also the dynamics of the process on the surface. The self-assembled layers of CTAB molecules on the HOPG terraces prior to nanorod deposition were shown to change the wettability of the surface, and as a result, gold nanorod deposition takes place on nonwetting HOPG terraces.

【 授权许可】

CC BY