您当前所在位置: 首页 > 学者

李海洋

  • 68浏览

  • 0点赞

  • 0收藏

  • 0分享

  • 72下载

  • 0评论

  • 引用

期刊论文

Preparation and vibrational modes of C-60 center dot 2CHBr(3)

李海洋Li HN Li HY Wu TQ He SL Sun YJ Xu YB

,-0001,():

URL:

摘要/描述

C-60 (.) 2CHBr(3) polycrystalline powder was prepared by the solution method. The vibrational modes of the sample were studied by Raman scattering and infrared adsorption techniques. The Raman spectra showed that the A(g) modes were downshifted by 4-5 cm(-1), while the Hg(1) mode was unshifted. The analyses of the downshifts of the Ag modes revealed that a small amount of electrons were transferred from the hydrogen atoms to the C-60 molecules. In the infrared spectra, the Flu modes of the pristine C-60 were unshifted after the intercalation with CHBr3. However, the vibrational modes of CHBr3 changed remarkably. The C-Br stretching mode was downshifted by similar to4 cm(-1). The adsorption of the C-H twisting mode was weakened obviously, and the adsorption of the C-H stretching mode was not observed. These results exhibited that there were nonnegligible interactions between CHBr3 and C-60 molecules, and that the strongest interaction took place between the hydrogen atoms and the C-60 molecules. The interaction should induce not only the changes of the vibrational modes reported here, but also those of the electronic states. So this work should offer important glues to the mechanism of the superconductivity at 117 K of the field-doped C-60 (.) 2CHBr(3).

关键词:

【免责声明】以下全部内容由[李海洋]上传于[2006年05月18日 18时43分53秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。

我要评论

全部评论 0

本学者其他成果

    同领域成果