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Thermally Switchable One- and Two-Dimensional Arrays of Single-Walled Carbon Nanotubes in a Polymeric System

Published

Author(s)

Changwoo Doe, Hyung-Sik Jang, Tae-Hwan Kim, Steven Kline, Sung-Min Choi

Abstract

Fabrication of highly ordered arrays of single walled carbon nanotubes (SWNTs) has been of great interest for a wide range of potential applications. Here we report highly ordered arrays of individually isolated SWNTs formed by cooperative self-assembly of functionalized SWNTs and a block copolymer/water system. Small angle X-ray scattering measurements reveal that when the block copolymer/water system is in an isotropic phase, hexagonal arrays of SWNTs are formed by depletion attraction and when the block copolymer/water system is in a lamellar phase, one-dimensional lattices of SWNTs intercalated in the polar regions of the polymeric lamellar structure are formed by entropically driven segregation and two-dimensional depletion attraction. These two SWNT arrays are thermally interchangeable equilibrium structures following the temperature dependent phase behavior of the block copolymer/water system.
Citation
Journal of the American Chemical Society
Volume
131

Keywords

carbon nanotubes, self-assembly, block copolymer, SAXS, templated structures, nanotube alignment

Citation

Doe, C. , Jang, H. , Kim, T. , Kline, S. and Choi, S. (2009), Thermally Switchable One- and Two-Dimensional Arrays of Single-Walled Carbon Nanotubes in a Polymeric System, Journal of the American Chemical Society, [online], https://doi.org/10.1021/ja9073479, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=902760 (Accessed June 21, 2024)

Issues

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Created October 26, 2009, Updated July 26, 2023