Pressure-induced polymerization of nano- and submicrometer C60 rods into a rhombohedral phase

被引：13
|
作者：
Hou, Yuanyuan
Liu, Bingbing
Ma, Hongan
Wang, Lin
Zhao, Qiang
Cui, Tian
Hu, Qiang
Chen, Ao
Liu, Dedi
Yu, Shidan
Jia, Xiaopeng
Zou, Guangtian
Sundqvist, B.
机构：
[1] Jilin Univ, Natl Lab Superhard Mat, Changchun 130012, Peoples R China
[2] Umea Univ, Dept Phys, S-90187 Umea, Sweden
来源：
CHEMICAL PHYSICS LETTERS | 2006年 / 423卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/j.cplett.2006.03.057
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：
C-60 rods with nano- and submicrometer dimensions were polymerized at 4.5 GPa and 973 K. Raman spectroscopy showed that the material transformed into a rhombohedral polymeric structure under high pressure and high temperature (HPHT) conditions. The HPHT polymerized samples keep the original rod shape. The position dependence of photoluminescence (PL) spectra have been studied on the rhombohedral polymer C60 rods at room temperature. The intensity of the 1.74 eV peak from the rhombohedral phase varies systematically between the edge of and the middle of the rod. Our results indicate that the 1.74 eV peak originates from surface defects. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：215 / 219
页数：5
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