Effect of water on resonant Raman spectroscopy of closed single-walled carbon nanotubes
Effect of water on resonant Raman spectroscopy of closed single-walled carbon nanotubes
复制标题
水对封闭单壁碳纳米管共振拉曼光谱的影响
DOI：
10.1002/pssb.201100074
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Ghandour A
中科院分区：
文献类型：
--
作者：
Ghandour A
利用激光能量为1.55-1.77 eV的可调谐拉曼激发光谱研究了半导体单壁碳纳米管绳在空气和水中的第二范霍夫奇点。利用拉曼光谱中直径和径向呼吸模式(RBM)的相关性，将光学跃迁分配给不同的(n，m)管。当管子浸入水中时，共振能发生蓝移，并且这种蓝移取决于手性角。此外，在浸入水中时，径向基模频率也发生蓝移。
Tunable Raman excitation spectroscopy with 1.55–1.77 eV laser energies was used to map the second van Hove singularities of semiconducting single‐walled carbon nanotubes ropes in air and immersed in water. The optical transitions are assigned to different (n,m) tubes using a correlation of the diameter and radial breathing mode (RBM) in the Raman spectrum. The resonance energies are blue‐shifted when the tubes are immersed in water and the shift depends on the chiral angle. In addition, the RBM frequencies are also blue‐shifted upon immersion in water.