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Dispersion of single-walled carbon nanotubes in water by the use of novel fluorinated dendrimer-type copolymers

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Abstract

New fluorinated dendrimer-type block copolymers were applied to the dispersion of single-walled carbon nanotubes (SW-CNTs) and single-walled carbon nanotubes containing carboxy groups [(SW-CNT)-COOH] in water. Fluorinated block copolymer could disperse SW-CNTs more effectively in water, compared to that of the corresponding ABA triblock-type fluoroalkyl end-capped dimethylacrylamide oligomer [RF-(DMAA)n-RF]. Dynamic light-scattering (DLS) measurements and transmission electron microscopy (TEM) images show that SW-CNTs could be smoothly encapsulated into fluorinated copolymeric aggregates cores. Interestingly, it was demonstrated that SW-CNTs could be in part released from the fluorinated copolymeric aggregates/SW-CNTs composites or encapsulated into these composites with increasing the dispersion times. On the other hand, fluorinated block copolymer and RF-(DMAA)n-RF oligomer were not able to disperse well (SW-CNT)-COOH in water; however, ABA triblock-type fluoroalkyl end-capped acrylic acid oligomer was able to disperse quite effectively (SW-CNT)-COOH in water.

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Acknowledgement

Thanks are due to Asahi Glass Co., Ltd. for supply of C4F9OCF(CF3)C(=O)F.

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Authors and Affiliations

  1. Department of Frontier Materials Chemsitry, Graduate School of Science and Technology, Hirosaki University, Bunkyo-cho, Hirosaki, 036-8561, Japan

    Hideo Sawada, Nao Naitoh, Remi Kasai & Masaru Suzuki

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  1. Hideo Sawada
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  2. Nao Naitoh
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  3. Remi Kasai
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  4. Masaru Suzuki
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Correspondence to Hideo Sawada.

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Sawada, H., Naitoh, N., Kasai, R. et al. Dispersion of single-walled carbon nanotubes in water by the use of novel fluorinated dendrimer-type copolymers. J Mater Sci 43, 1080–1086 (2008). https://doi.org/10.1007/s10853-007-2329-8

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  • DOI: https://doi.org/10.1007/s10853-007-2329-8

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