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A resonance Raman study of carboxyl induced defects in single-walled carbon nanotubes
被引:31
作者:
Talla, Jamal
[1
]
Zhang, Donghui
[2
]
Kandadai, Madhuvanthi
[3
]
Avadhanula, Aditya
[4
]
Curran, Seamus
[5
]
机构:
[1] King Faisal Univ, Dept Phys, Al Hasa 31982, Saudi Arabia
[2] Louisiana State Univ, Dept Chem, Baton Rouge, LA 70803 USA
[3] Univ Utah, Dept Chem Engn, Salt Lake City, UT 84112 USA
[4] Micron Technol Inc, Boise, ID 83707 USA
[5] Univ Houston, Dept Phys, Houston, TX 77204 USA
关键词:
Carboxylation;
Resonance Raman spectroscopy;
Single-walled carbon nanotubes;
Defects;
Haeckelites;
SCATTERING;
FUNCTIONALIZATION;
COMPOSITE;
D O I:
10.1016/j.physb.2010.08.041
中图分类号:
O469 [凝聚态物理学];
学科分类号:
070205 ;
摘要:
Changes in the vibrational response of single-walled carbon nanotubes (SWCNTs) resulting from the introduction of structural defects on their body were studied using resonance Raman spectroscopy. Structural defects were introduced on the SWCNTs by subjecting them to carboxylation for different intervals of time. Various Raman modes were observed, including the D, G(+)/G(-), G' modes, and new defect induced modes were identified. Weaker vibrational modes corresponding to Stone-Wales defects with specific structures known as Haeckelites were identified. These modes were compared with the theoretically calculated modes and correlated to O(5,6,7) and R(5,7) Haeckelite structures. (C) 2010 Elsevier B.V. All rights reserved.
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页码:4570 / 4573
页数:4
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