Investigation on the aggregation properties of cationic [60]fullerene derivative  

作　　者：WANGGuanwu ZHAOGuoxia YANLifeng 

机构地区：[1]DepartmentofChemistry,UniversityofScienceandTechnologyofChina,Hefei230026,China [2]DepartmentofChemicalPhysics,UniversityofScienceandTechnologyofChina,Hefei230026,China

出　　处：《Chinese Science Bulletin》2004年第14期1441-1445,共5页

摘　　要：The UV-Vis spectra, HRTEM and AFM images of cationic fullerene derivative 1 with ammonium head group directly connected to C60 skeleton in tetrahydrofuran (THF)-water (H2O) binary mixtures and in pure H2O were investigated. It was found that the UV-Vis spectra of ammo-nium 1 in the THF-H2O mixtures with THF% ≥ 20% were nearly overlapped, while those with THF% < 20% showed broadened and red-shifted peaks, indicating the formation of aggregates. Corresponding to the UV-Vis spectral changes, the solvatochromism of ammonium 1 in THF-H2O mixtures was observed. Ammonium 1 in binary THF-H2O mixtures existing as the monomer state could aggregate upon pro-longed standing. Higher temperature and lower concentra-tion speeded up the aggregation process.The UV-Vis spectra, HRTEM and AFM images of cationic fullerene derivative 1 with ammonium head group directly connected to C60 skeleton in tetrahydrofuran (THF)-water (H2O) binary mixtures and in pure H2O were investigated. It was found that the UV-Vis spectra of ammo-nium 1 in the THF-H2O mixtures with THF% ≥ 20% were nearly overlapped, while those with THF% < 20% showed broadened and red-shifted peaks, indicating the formation of aggregates. Corresponding to the UV-Vis spectral changes, the solvatochromism of ammonium 1 in THF-H2O mixtures was observed. Ammonium 1 in binary THF-H2O mixtures existing as the monomer state could aggregate upon pro-longed standing. Higher temperature and lower concentra-tion speeded up the aggregation process.

关 键 词：水溶球壳状碳分子衍生物 纳米分子 集合性质 阳离子球壳状碳分子 C60 

分 类 号：O613.71[理学—无机化学]