高导电性自组装金/聚苯胺纳米电缆及聚苯胺纳米管的制备

Preparation of highly conductive, self-assembled gold/polyaniline nanocables and polyaniline nanotubes.

作者信息

Huang Kun, Zhang Yuanjian, Long Yunze, Yuan Junhua, Han Dongxue, Wang Zhijuan, Niu Li, Chen Zhaojia

机构信息

State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, China.

出版信息

Chemistry. 2006 Jul 5;12(20):5314-9. doi: 10.1002/chem.200501527.

DOI:10.1002/chem.200501527

PMID:16628760

Abstract

One-dimensional gold/polyaniline (Au/PANI-CSA) coaxial nanocables with an average diameter of 50-60 nm and lengths of more than 1 mum were successfully synthesized by reacting aniline monomer with chlorauric acid (HAuCl(4)) through a self-assembly process in the presence of D-camphor-10-sulfonic acid (CSA), which acts as both a dopant and surfactant. It was found that the formation probability and the size of the Au/PANI-CSA nanocables depends on the molar ratio of aniline to HAuCl(4) and the concentration of CSA, respectively. A synergistic growth mechanism was proposed to interpret the formation of the Au/PANI-CSA nanocables. The directly measured conductivity of a single gold/polyaniline nanocable was found to be high (approximately 77.2 S cm(-1)). Hollow PANI-CSA nanotubes, with an average diameter of 50-60 nm, were also obtained successfully by dissolving the Au nanowire core of the Au/PANI-CSA nanocables.

摘要

通过在D-樟脑-10-磺酸（CSA）存在下，使苯胺单体与氯金酸（HAuCl₄）通过自组装过程反应，成功合成了平均直径为50 - 60纳米、长度超过1微米的一维金/聚苯胺（Au/PANI-CSA）同轴纳米电缆，其中CSA既作为掺杂剂又作为表面活性剂。研究发现，Au/PANI-CSA纳米电缆的形成概率和尺寸分别取决于苯胺与HAuCl₄的摩尔比以及CSA的浓度。提出了一种协同生长机制来解释Au/PANI-CSA纳米电缆的形成。发现单个金/聚苯胺纳米电缆的直接测量电导率很高（约77.2 S cm⁻¹）。通过溶解Au/PANI-CSA纳米电缆的Au纳米线芯，还成功获得了平均直径为50 - 60纳米的空心PANI-CSA纳米管。