Solubilization of [60]Fullerene Owing to Inclusion Complex Formation between Syndiotactic Poly(methyl methacrylate) and the Fullerenes in Polar Solvents
Solubilization of [60]Fullerene Owing to Inclusion Complex Formation between Syndiotactic Poly(methyl methacrylate) and the Fullerenes in Polar Solvents
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DOI：
10.1021/ma901235b
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发表时间：
2009-07
期刊：
影响因子：
5.5
通讯作者：
M. Kawauchi;T. Kawauchi;T. Takeichi
中科院分区：
文献类型：
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作者：
M. Kawauchi;T. Kawauchi;T. Takeichi
我们发现[60]富勒烯（C60）在聚甲基丙烯酸甲酯（st-PMMA）存在的情况下可溶于极性溶剂，如乙腈和丙酮。当聚合物浓度为4 mg/mL时，st-PMMA的加入使C60在乙腈中的溶解度从0.00 mg/mL急剧提高到0.27 mg/mL。溶解度随st-PMMA浓度的增加而增加。用C60乙腈溶液浇铸st-PMMA制备了含C60的透明st-PMMA薄膜。x射线衍射分析表明，膜中形成了st-PMMA/C60包合物，其中C60分子被包裹在螺旋形st-PMMA腔内。含有C60的st-PMMA薄膜表现出较高的耐热性，这是由于包合物的结晶结构，并且由于存在显色C60分子而在UV - vis区吸收光。
We found [60]fullerene (C60) to be soluble in polar solvents such as acetonitrile and acetone in the presence of syndiotactic poly(methyl methacrylate) (st-PMMA). The solubility of C60 in acetonitrile drastically increased from 0.00 to 0.27 mg/mL upon the addition of st-PMMA at the polymer concentration of 4 mg/mL. Furthermore, the solubility increased with the concentration of st-PMMA. Transparent st-PMMA films containing C60 were prepared by casting an acetonitrile solution of C60 with st-PMMA. X-ray diffraction analysis of the films revealed the formation of st-PMMA/C60 inclusion complex in which the C60 molecules were encapsulated within a helical st-PMMA cavity. The st-PMMA films containing C60 showed high heat resistance, which resulted from the crystalline structure of the inclusion complex, and absorbed light in the UV−vis region because of the presence of chromophoric C60 molecules.