摘要
SWNTs were oxidized by a simple wet chemical method involving treatment in aqueous ammonium persulfate(APS) solution at a certain temperature.Fourier transform infrared spectroscopy(FTIR) and X-ray photoelectron spectroscopy(XPS) demonstrated that a large amount of oxygen containing groups such as hydroxyl groups and carbonyl groups was attached to the sidewall of SWNTs.The oxidized SWNTs showed good solubility in polar solvents including water and DMF.Atomic force microscopic images showed that SWNTs could be cut into short pipes by the highly concentrated APS solution at 80℃.With the decrease of reaction temperature or APS concentration,the oxidized SWNTs remained uncut.
SWNTs were oxidized by a simple wet chemical method involving treatment in aqueous ammonium persulfate(APS) solution at a certain temperature.Fourier transform infrared spectroscopy(FTIR) and X-ray photoelectron spectroscopy(XPS) demonstrated that a large amount of oxygen containing groups such as hydroxyl groups and carbonyl groups was attached to the sidewall of SWNTs.The oxidized SWNTs showed good solubility in polar solvents including water and DMF.Atomic force microscopic images showed that SWNTs could be cut into short pipes by the highly concentrated APS solution at 80℃.With the decrease of reaction temperature or APS concentration,the oxidized SWNTs remained uncut.
基金
supports by the Changjiang Scholars and Innovative Research Team in University (IRT 0706)
Program of Introducing Talents of Discipline to Universities (B08003) are greatly appreciated
