Electronic structure of Eu@C60 studied by XANES and UV-VIS absorption spectra

被引:64
作者
Inoue, T
Kubozono, Y
Kashino, S
Takabayashi, Y
Fujitaka, K
Hida, M
Inoue, M
Kanbara, T
Emura, S
Uruga, T
机构
[1] Okayama Univ, Dept Chem, Okayama 7008530, Japan
[2] Okayama Univ, Dept Mech Engn, Okayama 7008530, Japan
[3] Osaka Univ, ISIR, Osaka 5670047, Japan
[4] JASRI, Sayo 6795198, Japan
关键词
D O I
10.1016/S0009-2614(99)01309-3
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
Eu endohedral C-60, Eu@C-60, has been extracted with aniline from soot prepared by are-heating of a graphite/Eu2O3 composite rod and obtained at high concentration by combining sublimation and repeated high-performance liquid chromatography. The laser desorption time-of-flight mass spectrum showed a pronounced peak of Eu@C-60(+). The W-VIS absorption spectrum of this sample has a red-shift in the onset (> 900 nm) in comparison with those for C-60 and C-70, as expected from electron transfer from the Eu atom to the C-60 cage. The valence state of the Eu atom in Eu@C-60 has been determined to be +2 by Eu L-m-edge XANES. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:381 / 386
页数:6
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