半导体纳米颗粒线性阵列在碳单壁纳米管上的自组装。

Self-assembly of linear arrays of semiconductor nanoparticles on carbon single-walled nanotubes.

作者信息

Engtrakul Chaiwat, Kim Yong-Hyun, Nedeljković Jovan M, Ahrenkiel S Phil, Gilbert Katherine E H, Alleman Jeff L, Zhang S B, Mićić Olga I, Nozik Arthur J, Heben Michael J

机构信息

National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, Colorado 80401, USA.

出版信息

J Phys Chem B. 2006 Dec 21;110(50):25153-7. doi: 10.1021/jp065176n.

DOI:10.1021/jp065176n

PMID:17165958

Abstract

Ligand-stabilized nanocrystals (NCs) were strongly bound to the nanotube surfaces by simple van der Waals forces. Linear arrays of CdSe and InP quantum dots were formed by self-assembly using the grooves in bundles of carbon single-walled nanotubes (SWNTs) as a one-dimensional template. A simple geometrical model explains the ordering in terms of the anisotropic properties of the nanotube surface. CdSe quantum rods were also observed to self-organize onto SWNTs with their long axis parallel to the nanotube axis. This approach offers a route to the formation of ordered NC/SWNT architectures that avoids problems associated with surface derivatization.

摘要

配体稳定的纳米晶体（NCs）通过简单的范德华力与纳米管表面紧密结合。利用碳单壁纳米管（SWNTs）束中的沟槽作为一维模板，通过自组装形成了CdSe和InP量子点的线性阵列。一个简单的几何模型根据纳米管表面的各向异性性质解释了这种有序排列。还观察到CdSe量子棒以其长轴平行于纳米管轴的方式自组装到SWNTs上。这种方法为形成有序的NC/SWNT结构提供了一条途径，避免了与表面衍生化相关的问题。