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Materials 2016, 9(6), 438; doi:10.3390/ma9060438

Bio-Inspired Supramolecular Chemistry Provides Highly Concentrated Dispersions of Carbon Nanotubes in Polythiophene

1
Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
2
Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, No. 70, Lienhai Road, Kaohsiung 80424, Taiwan
*
Authors to whom correspondence should be addressed.
Academic Editor: Nicola Pugno
Received: 7 April 2016 / Revised: 17 May 2016 / Accepted: 27 May 2016 / Published: 2 June 2016
(This article belongs to the Special Issue Advances in Bendable and Soft Material Film)
View Full-Text   |   Download PDF [4826 KB, uploaded 2 June 2016]   |  

Abstract

In this paper we report the first observation, through X-ray diffraction, of noncovalent uracil–uracil (U–U) dimeric π-stacking interactions in carbon nanotube (CNT)–based supramolecular assemblies. The directionally oriented morphology determined using atomic force microscopy revealed highly organized behavior through π-stacking of U moieties in a U-functionalized CNT derivative (CNT–U). We developed a dispersion system to investigate the bio-inspired interactions between an adenine (A)-terminated poly(3-adeninehexyl thiophene) (PAT) and CNT–U. These hybrid CNT–U/PAT materials interacted through π-stacking and multiple hydrogen bonding between the U moieties of CNT–U and the A moieties of PAT. Most importantly, the U···A multiple hydrogen bonding interactions between CNT–U and PAT enhanced the dispersion of CNT–U in a high-polarity solvent (DMSO). The morphology of these hybrids, determined using transmission electron microscopy, featured grape-like PAT bundles wrapped around the CNT–U surface; this tight connection was responsible for the enhanced dispersion of CNT–U in DMSO. View Full-Text
Keywords: π-stacking; noncovalent interaction; carbon nanotubes dispersion; hydrogen bond interaction π-stacking; noncovalent interaction; carbon nanotubes dispersion; hydrogen bond interaction
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lin, Y.-T.; Singh, R.; Kuo, S.-W.; Ko, F.-H. Bio-Inspired Supramolecular Chemistry Provides Highly Concentrated Dispersions of Carbon Nanotubes in Polythiophene. Materials 2016, 9, 438.

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