VAPOR-PRESSURE OF BUCKMINSTERFULLERENE

被引：196

作者：

ABREFAH, J

OLANDER, DR

BALOOCH, M

SIEKHAUS, WJ

机构：

[1] UNIV CALIF BERKELEY,DEPT NUCL ENGN,BERKELEY,CA 94720

[2] UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & MAT SCI,DIV CONDENSED MATTER & ANALYT SCI,LIVERMORE,CA 94550

来源：

APPLIED PHYSICS LETTERS | 1992年 / 60卷 / 11期

关键词：

D O I：

10.1063/1.107327

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The vapor pressures of the fullerenes C60 and C70 have been measured over the temperature range 400-600-degrees-C by the Knudsen-effusion thermogravimetric technique. For C60, a heat of sublimation of 38 +/- 1 kcal/mol is obtained, and the value for C70 is 45 +/- 1 kcal/mol. The vapor pressure of C60 ranges from 1.8 X 10(-5) and 1.4 X 10(-2) Torr and that of C70 is between 1.4 X 10(-5) and 8.7 X 10(-3) Torr over the temperature range investigated. At 500-degrees-C, the vapor pressure of C60 is about 10(35) that of graphite. The entropy of vaporization of C60 obeys Trouton's rule.

引用

页码：1313 / 1314

页数：2