TRANSMISSION ELECTRON-MICROSCOPY OF C-70 SINGLE-CRYSTALS AT ROOM-TEMPERATURE

被引：14

作者：

DRAVID, VP ^{[1
]}

LIN, XW ^{[1
]}

ZHANG, H ^{[1
]}

LIU, SZ ^{[1
]}

KAPPES, MM ^{[1
]}

机构：

[1] NORTHWESTERN UNIV,DEPT CHEM,EVANSTON,IL 60208

来源：

JOURNAL OF MATERIALS RESEARCH | 1992年 / 7卷 / 09期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1557/JMR.1992.2440

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transmission electron microscopy (TEM) techniques have been employed to study the room temperature solid state form of chromatographically purified C70. Tilting and electron diffraction experiments in three-dimensional reciprocal space, on samples prepared by crystallization from several different solvents, show that C70 crystallites adopt hexagonal close packed (hcp) structure with a = 1.01 +/- 0.05 nm and c = 1.70 +/- 0.08 nm. The extinctions and observed reflections conform to the P6(3)/mmc space group. High resolution TEM images reveal the molecular order and periodicity associated with C70 crystallites in real space. The experimental results are in agreement with the preliminary computations of crystal structure within acceptable error limits.

引用

页码：2440 / 2446

页数：7

共 22 条

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