Raman Laser Polymerization of C60 Nanowhiskers
Raman Laser Polymerization of C60 Nanowhiskers
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DOI：
10.1155/2012/101243
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发表时间：
2012-01-01
影响因子：
4.2
通讯作者：
Miyazawa, Kun'ichi
中科院分区：
文献类型：
--
作者：
Kato, Ryoei;Miyazawa, Kun'ichi
利用拉曼光谱仪在室温下研究了C-60纳米晶须（C(60)NWs）的光聚合，因为聚合的C(60)NWs有望表现出高的机械强度和热稳定性。采用液-液界面沉淀法合成了平均长度为4.4 μ m的短C(60)NWs。随着激光束能量剂量的增加，C60NWs的A(g)(2)峰向低波数偏移，获得光聚合的C60NWs所需的能量剂量大于1520 J/mm(2)。然而，在高功率密度下，过高的能量剂量增加了样品温度，导致聚合的C-60分子热分解。
Photopolymerization of C-60 nanowhiskers (C(60)NWs) was investigated by using a Raman spectrometer in air at room temperature, since the polymerized C(60)NWs are expected to exhibit a high mechanical strength and a thermal stability. Short C(60)NWs with a mean length of 4.4 mu m were synthesized by LLIP method (liquid-liquid interfacial precipitation method). The A(g)(2) peak of C60NWs shifted to the lower wavenumbers with increasing the laser beam energy dose, and an energy dose more than about 1520 J/mm(2) was found necessary to obtain the photopolymerized C(60)NWs. However, excessive energy doses at high-power densities increased the sample temperature and lead to the thermal decomposition of polymerized C-60 molecules.