Organic-Inorganic Hybrid Nanoraspberry Consisted of Gold Nanoparticle and Aniline Oligomer
Organic-Inorganic Hybrid Nanoraspberry Consisted of Gold Nanoparticle and Aniline Oligomer
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DOI：
10.1149/1.3549166
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发表时间：
2011-04
影响因子：
3.9
通讯作者：
Ryosuke Morita;Ryota Inoue;S. Tokonami;Yojiro Yamamoto;M. Nakayama;H. Nakao;H. Shiigi;T. Nagaoka
中科院分区：
文献类型：
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作者：
Ryosuke Morita;Ryota Inoue;S. Tokonami;Yojiro Yamamoto;M. Nakayama;H. Nakao;H. Shiigi;T. Nagaoka
一个纳米大小的树莓状架构，由三维金纳米粒子（AuNP）-有机组分-AuNP排列的重复序列的聚集体组成，已经用一个单步程序在水体系中制备，包括苯胺还原金酸盐为AuNP。乌藨子状聚集体的直径在150-200 nm的范围内，由平均粒径为5.0 nm的AuNP组成。热重分析和光谱测量表明，有机组分由苯胺单体氧化金酸盐得到的苯胺低聚物组成。该纳米树莓显示聚苯胺（PANI）的电学性质，其在掺杂过程后具有高电导率（3.1× 10− 2 Scm− 1），并且在去掺杂后变为绝缘体（> 10− 8 Scm− 1）。相反，纳米树莓显示出不同于聚苯胺的电化学行为。很明显，纳米树莓的电学和电化学性质分别强烈依赖于苯胺低聚物和AuNP。
A nanometer-sized raspberry-like architecture, consisting of an aggregation of repeated sequences of a three-dimensional gold nanoparticle (AuNP)-organic component-AuNP arrangement, has been prepared with a single-step procedure in an aqueous system involving the reduction of aurate to AuNPs by aniline. The raspberry-like aggregates, which have diameters in the range of 150–200 nm, comprise of AuNPs with a mean particle diameter of 5.0 nm. Thermogravimetric analysis and spectroscopic measurement have revealed that the organic component consists of aniline oligomer obtained from oxidation of the aniline monomer by aurate. The nanoraspberry displays an electrical property of polyaniline (PANI), which has a high conductivity after doping process (3.1× 10− 2 Scm− 1) and becomes an insulator after the dedoping (> 10− 8 Scm− 1). On the contrary, the nanoraspberry shows an electrochemical behavior differing from that of PANI. It is clear that the electrical and electrochemical properties of the nanoraspberry depend strongly on the aniline oligomer and AuNP, respectively.