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Updated: Mar 8, 2026

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

Published on: June 1, 2016

Sorting Carbon Nanotubes.

¹Materials Science and Engineering Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899, USA. ming.zheng@nist.gov.

Topics in Current Chemistry (Cham)

|January 14, 2017

Summary

This summary is machine-generated.

This review covers methods for sorting single-wall carbon nanotubes (SWCNTs) by structure in liquids. Differences in solvation drive sorting, enabling separation based on electronic and atomic properties.

Keywords:

Chirality DNA Separation Single-wall carbon nanotubes Solvation energy

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Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

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Area of Science:

Materials Science
Nanotechnology
Physical Chemistry

Background:

Single-wall carbon nanotubes (SWCNTs) possess unique electronic and atomic structures.
Separating SWCNTs by structure is crucial for their application in advanced electronics and materials.
Existing separation methods often lack efficiency and scalability.

Purpose of the Study:

To review and analyze various liquid-phase sorting methodologies for SWCNTs.
To identify the fundamental mechanisms underlying SWCNT separation processes.
To discuss future directions and potential applications of SWCNT sorting technologies.

Main Methods:

Overview of chronological development of SWCNT sorting techniques over the past 15 years.
Discussion of key methods: ion-exchange chromatography, density-gradient ultracentrifugation, selective extraction, gel chromatography, and aqueous two-phase extraction.
Analysis of mechanisms for electronic-structure-based and atomic-structure-based sorting.

Main Results:

Differences in solvation energies among distinct SWCNT species are identified as the primary driving force for separation.
Demonstration of how solvation differences manifest in various sorting techniques.
Corroboration of the solvation-driven mechanism through analysis of sorting outcomes.

Conclusions:

Solvation differences provide a unifying mechanism for diverse SWCNT sorting strategies.
Future research can leverage DNA/carbon nanotube hybrids for enhanced control over inter-particle interactions.
Advances in SWCNT sorting will facilitate their integration into next-generation technologies.