Enhanced dispersion of nanotubes in organic solvents by donor–acceptor interaction between functionalized poly(phenylacetylene) chains and carbon nanotube walls |
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| Authors: | Hui Zhao Wang Zhang Yuan Ju Mei Li Tang Xiao Qing Liu Ji Ming Yan Xiao Yuan Shen Jing Zhi Sun Anjun Qin Ben Zhong Tang |
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| Institution: | 1. Department of Polymer Science and Engineering, Institute of Biomedical Macromolecules, Key Laboratory of Macromolecular Synthesis and Functionalization of the Ministry of Education of Chinese Government, Zhejiang University, Hangzhou 310027, China;2. Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China |
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| Abstract: | Phenylacetylene derivatives containing carbazole ( 1 ) and fluorene ( 2 ) moieties were polymerized by Rh(nbd)Cl]2 into corresponding polymers P 1 and P 2 of high molecular weights (Mw ～ 150 × 103–465 × 103) in high yields (up to 98%). The polymers were characterized by NMR, IR, UV, PL, and CV techniques. Hybrids of the polymers with multiwalled carbon nanotubes (MWNTs) were prepared by simply mixing the two components in common organic solvents such as dichloromethane. The solvating power of the polymer carrying the electron‐donating carbazolyl pendant (P 1 ) is stronger than that of its counterpart carrying fluorenyl pendant (P 2 ), due to the stronger donor–acceptor (D–A) interaction between the P 1 chains and the MWNT walls. This work clearly manifests that D–A effect plays an important role in the polymer‐aided MWNT dispersion in organic solvents. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 4995–5005, 2009 |
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| Keywords: | conjugated polymers donor– acceptor interaction functionalized poly(phenylacetylene)s multiwalled carbon nanotubes nanocomposites photoluminescence polyacetylene polymer‐MWNT hybrids redox activity |
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