Dimension, Strength, and Chemical and Thermal Stability of a Single C−C Bond in Carbon Nanotubes

For single-walled carbon nanotubes (SWCNTs), given the known product of the Young's modulus Y and the wall (bond) thickness t (Yt ≅ 0.3685 TPa·nm) and the known temperature of tip-end melting (T m = 1593 K), as well as their functional dependence on atomic coordination and bonding energy, the d...

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Published in:The journal of physical chemistry. B 2003-08, Vol.107 (31), p.7544-7546
Main Authors: Sun, Chang Q, Bai, H. L, Tay, B. K, Li, S, Jiang, E. Y
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Language:English
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description For single-walled carbon nanotubes (SWCNTs), given the known product of the Young's modulus Y and the wall (bond) thickness t (Yt ≅ 0.3685 TPa·nm) and the known temperature of tip-end melting (T m = 1593 K), as well as their functional dependence on atomic coordination and bonding energy, the dimension and strength of a C−C bond in a SWCNT have been determined. The uniqueness of the solution reveals that the C−C bond (or the wall of the SWCNT) is ∼0.142 nm thick and ∼0.125 nm long (an 18.5% contraction of diamond bond length, 0.154 nm), with a 68% increase in binding energy, with respect to the bulk graphite values. Therefore, the measured Yt and T m values essentially represent the true SWCNT situation.
doi_str_mv 10.1021/jp035070h
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title Dimension, Strength, and Chemical and Thermal Stability of a Single C−C Bond in Carbon Nanotubes
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