Jayamurugan, G. ; Vasu, K. S. ; Rajesh, Y. B. R. D. ; Kumar, S. ; Vasumathi, V. ; Maiti, P. K. ; Sood, A. K. ; Jayaraman, N. (2011) Interaction of single-walled carbon nanotubes with poly(propyl ether imine) dendrimers Journal of Chemical Physics, 134 (10). 104507_1- 104507 _6. ISSN 0021-9606
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Official URL: http://jcp.aip.org/resource/1/jcpsa6/v134/i10/p104...
Related URL: http://dx.doi.org/10.1063/1.3561308
Abstract
We study the complexation of nontoxic, native poly(propyl ether imine) dendrimers with single-walled carbon nanotubes (SWNTs). The interaction was monitored by measuring the quenching of inherent fluorescence of the dendrimer. The dendrimer-nanotube binding also resulted in the increased electrical resistance of the hole doped SWNT, due to charge-transfer interaction between dendrimer and nanotube. This charge-transfer interaction was further corroborated by observing a shift in frequency of the tangential Raman modes of SWNT. We also report the effect of acidic and neutral pH conditions on the binding affinities. Experimental studies were supplemented by all atom molecular dynamics simulations to provide a microscopic picture of the dendrimer-nanotube complex. The complexation was achieved through charge transfer and hydrophobic interactions, aided by multitude of oxygen, nitrogen, and n-propyl moieties of the dendrimer.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Institute of Physics. |
Keywords: | Carbon Nanotubes; Charge Exchange; Crystal Binding; Dendrites; Electric Resistance; Fluorescence; Hydrophobicity; Molecular Dynamics Method; Molecule-molecule Reactions; Organic-inorganic Hybrid Materials; pH; Polymers; Radiation Quenching |
ID Code: | 66002 |
Deposited On: | 20 Oct 2011 07:13 |
Last Modified: | 20 Oct 2011 07:13 |
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