Purification of C60 by fractional crystallization

被引：22

作者：

Doome, RJ ^{[1
]}

Fonseca, A ^{[1
]}

Richter, H ^{[1
]}

Nagy, JB ^{[1
]}

Thiry, PA ^{[1
]}

Lucas, AA ^{[1
]}

机构：

[1] Fac Univ Notre Dame Paix, Inst Studies Interface Sci, B-5000 Namur, Belgium

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1997年 / 58卷 / 11期

关键词：

fullerenes; C-60; solubility; crystallization;

D O I：

10.1016/S0022-3697(97)00094-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We describe a new and inexpensive method of purifying C-60 by fractional crystallization in 1,3-diphenylacetone. After three steps, 99.5% pure C-60 was obtained with a global yield of 69%. This method is simpler and could be cheaper than any other method presently used. Furthermore, the purity of C-60 fullerene can be increased up to 99.99% by adsorption of the residual C-70 fullerene on charcoal. The temperature dependence of the solubility of C-60 and C-70 in 1,3-diphenylacetone was studied and a maximum of solubility was observed at 136 degrees C for C-60 and at 41 degrees C for C-70. This peculiar solubility behaviour is discussed in the light of possible aggregation of C-60 and C-70 molecules in the solution phase. (C) 1997 Elsevier Science Ltd.

引用

页码：1839 / 1843

页数：5

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