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Open AccessArticle

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
Materials 2016, 9(6), 438; https://doi.org/10.3390/ma9060438
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)
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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MDPI and ACS Style

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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