Preparation and enrichment of samarium endohedral fullerenes

被引：29

作者：

Lian, YF ^{[1
]}

Shi, ZJ ^{[1
]}

Zhou, XH ^{[1
]}

He, XR ^{[1
]}

Gu, ZN ^{[1
]}

机构：

[1] Peking Univ, Dept Chem, Beijing 100871, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2001年 / 13卷 / 01期

关键词：

D O I：

10.1021/cm990732u

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A graphite anode packed with a powder mixture of Sm2Co17, SiC, and graphite with a high atomic ratio of Sm/C was vaporized by direct current are discharge under improved conditions including high helium pressure, low electric current, and wide electrode gap. The soot produced was successively extracted by CS2 and pyridine, and the extracts were processed through column chromatography on silica gel. Matrix-assisted laser desorption-ionization time-of-flight (MALD-TOF) mass spectrometry analysis indicated that a high yield of samarium endohedral fullerenes (Sm@C-2n) with Sm@C-84 as the most abundant one was achieved. Possible reasons leading to this high yield are discussed.

引用

页码：39 / 42

页数：4

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