Programmable Self-Assembly of Gold Nanoarrows via Regioselective Adsorption  

作　　者：Cheng Chen Liheng Zheng Fucheng Guo Zheyu Fang Limin Qi 

机构地区：[1]Beijing National Laboratory for Molecular Sciences(BNLMS),College of Chemistry,Peking University,Beijing 100871,China [2]State Key Laboratory for Mesoscopic Physics,Collaborative Innovation Center of Quantum Matter,School of Physics,Peking University,Beijing 100871,China

出　　处：《Research》2021年第1期727-736,共10页研究（英文）

基　　金：supported by NSFC(Grant Nos.21972004 and 21673007);the Ministry of Science and Technology of China(2018YFA0703502).

摘　　要：Programing the self-assembly of colloidal nanoparticles into predetermined superstructures represents an attractive strategy to realize functional assemblies and novel nanodevices,but it remains a challenge.Herein,gold nanoarrows(GNAs)showing a distinct convex-concave structure were employed as unique building blocks for programmable self-assembly involving multiple assembly modes.Regioselective adsorption of 1,10-decanedithiol on the vertexes,edges,and facets of GNAs allowed for programmable self-assembly of GNAs with five distinct assembly modes,and regioselective blocking with 1-dodecanethiol followed by adsorption of 1,10-decanedithiol gave rise to programmable self-assembly with six assembly modes including three novel wing-engaged modes.The assembly mode was essentially determined by regioselective adsorption of the dithiol linker dictated by the local curvature together with the shape complementarity of GNAs.This approach reveals how the geometric morphology of nanoparticles affects their regioselective functionalization and drives their self-assembly.

关 键 词：ADSORPTION ADSORPTION CURVATURE 

分 类 号：O64[理学—物理化学]