Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka, Japan.
Chemistry. 2011 Nov 25;17(48):13438-44. doi: 10.1002/chem.201101669. Epub 2011 Nov 8.
The first approach for the preparation of metal nanoparticle/semiconducting single-walled carbon nanotube (SWNT) hybrids with specified chirality is described. For this purpose, a copolymer of a fluorene derivative with two long-chain alkyl substituents and a carbazole derivative carrying a thiol group was used. The copolymer was found to selectively dissolve (7,6)- and (8,7)SWNTs, as determined by UV/Vis/NIR absorption and Raman spectroscopy and 2D photoluminescence mapping. Gold and silver nanoparticles with diameters of about 3.8 and about 3.2 nm, respectively, were readily attached along the SWNTs by means of coordination bonds between the nanoparticles and the thiol moieties on the copolymer, as revealed by atomic force and electron microscopy studies. The study provides a novel way to design and fabricate metal nanoparticle/semiconducting SWNT hybrids with specific nanotube chirality.
本文描述了一种制备具有特定手性的金属纳米粒子/半导体单壁碳纳米管（SWNT）杂化物的方法。为此，使用了一种芴衍生物与两个长链烷基取代基和一种带有巯基的咔唑衍生物的共聚物。通过紫外/可见/近红外吸收和拉曼光谱以及二维光致发光映射确定，该共聚物选择性地溶解（7,6）-和（8,7）-SWNTs。通过纳米粒子与共聚物上的巯基部分之间的配位键，很容易将直径约为 3.8nm 和 3.2nm 的金和银纳米粒子附着在 SWNTs 上，这一点通过原子力和电子显微镜研究得到了揭示。该研究为设计和制备具有特定纳米管手性的金属纳米粒子/半导体 SWNT 杂化物提供了一种新方法。
