单壁碳纳米管的共价侧壁功能化：一种光还原方法。

Covalent sidewall functionalization of single-walled carbon nanotubes: a photoreduction approach.

机构信息

National Key Laboratory of Nano/Micro Fabrication Technology, Institute of Micro and Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200030, People's Republic of China.

出版信息

Nanotechnology. 2007 Dec 12;18(49):495703. doi: 10.1088/0957-4484/18/49/495703. Epub 2007 Nov 2.

DOI:10.1088/0957-4484/18/49/495703

PMID:20442484

Abstract

Covalent sidewall functionalization of single-walled carbon nanotubes (SWNTs) via photoreduction of aromatic ketones by alcohols is reported for the first time. Irradiation of benzophenone, benzhydrol and SWNTs in benzene resulted in covalent attachment of benzhydrol to the sidewalls of the SWNTs. A variety of tools were used to characterize the functionalized SWNTs. Raman scattering, UV-visible and near-IR spectroscopy confirm the covalent nature of the sidewall functionalization. Attenuated total reflection (ATR) FTIR and NMR provided evidence for attachment of benzhydrol onto the sidewalls of nanotubes. Thermogravimetric analysis (TGA) showed that the degree of functionalization was about one benzhydrol in 52 sidewall carbons. A long-chain hydrocarbon marker (n-C(18)H(35)) was also grafted onto the functional groups by esterification reaction for high-resolution TEM (HRTEM) visualization.

摘要

首次报道了通过醇类的光还原反应将单壁碳纳米管（SWNTs）的共价侧壁功能化。在苯中辐照二苯甲酮、二苯甲醇和 SWNTs 导致二苯甲醇共价连接到 SWNTs 的侧壁上。多种工具用于表征功能化的 SWNTs。拉曼散射、紫外-可见和近红外光谱证实了侧壁功能化的共价性质。衰减全反射（ATR）FTIR 和 NMR 提供了二苯甲醇接枝到纳米管侧壁上的证据。热重分析（TGA）表明，功能化程度约为每 52 个侧壁碳上接枝一个二苯甲醇。还通过酯化反应将长链碳氢化合物标记物（n-C(18)H(35))接枝到功能基团上，以便进行高分辨率 TEM（HRTEM）可视化。