Direct self-assembly of CTAB-capped Au nanotriangles

作     者：Qiang Fu Guangjun Ran Weilin Xu 

作者机构：State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 China University of Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2016年第9卷第11期

页      面：3247-3256页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Dr. Mattew R. Jones and Prof. Paul Alivisatos from UC Berkeley are appreciated for the valuable discussion about the self-assembly mechanism. This work was supported by the National Basic Research Program of China (973 Program  Nos. 2012CB932800 and 2014CB932700)  National Natural Science Foundation of China (Nos. 21422307  21303180  21433003  21503212  and 21503211)  the "Recruitment Program of Global youth Experts" of China  Shenzhen Science and Technology Foundation (No. JCYJ20140418182819116)  and the Natural Science Foundation of SZU (No. 201447) 

主　　题：suprastructure Au nanotriangles self-assembly cetyltrimethylammonium bromide (CTAB) 

摘      要：Densely packed and ordered ＂suprastructures＂ are new types of nanomaterials exhibiting broad applications. The direct self-assembly of cetyltrimethylammonium bromide （CTAB）-capped gold nanotriangles to form ＂suprastructures＂ was systematically investigated by varying the temperature and tilt angle of the silicon wafer used in the assembly process. Under optimal conditions, nanotriangles form into regular patterns, maintain their integrity, and form edge-to-edge, point-to-point, and face-to-face connections to form ordered ＂suprastructures＂ within an area of hundreds of square microns, achieving a high level of regularity. The formation of the ＂suprastructures＂ under optimal conditions could be mainly attributed to the complex balance between multiple temperature-dependent factors, including the atom diffusion rate, solvent evaporation rate, self-assembly rate, and the time for which the nanoparticle stays in the wet medium.