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Updated: May 17, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
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Published on: December 6, 2021

CO(2) -responsive "smart" single-walled carbon nanotubes.

Zanru Guo1, Yujun Feng, Shuai He

  • 1Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|November 8, 2012
PubMed
Summary
This summary is machine-generated.

Researchers developed "smart" polymer-wrapped carbon nanotubes. These materials change from hydrophobic to hydrophilic when exposed to carbon dioxide (CO2), enabling controlled dispersion and aggregation.

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Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes
09:28

Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes

Published on: January 10, 2017

Area of Science:

  • Materials Science
  • Nanotechnology
  • Polymer Chemistry

Background:

  • Single-walled carbon nanotubes (SWNTs) possess unique electronic and mechanical properties.
  • Controlling the solubility and aggregation of SWNTs is crucial for their application.
  • Developing stimuli-responsive materials is a key area in advanced nanotechnology.

Purpose of the Study:

  • To create novel "smart" single-walled carbon nanotubes (SWNTs).
  • To functionalize SWNTs with a CO(2)-responsive polymer for tunable properties.
  • To investigate the CO(2)-induced phase transitions and dispersion behavior of the resulting hybrids.

Main Methods:

  • Synthesized pyrene-labeled CO(2)-responsive polymer.
  • Wrapped the polymer onto SWNTs using π-π stacking interactions.
  • Investigated hydrophobic-hydrophilic transitions in mixed solvents.
  • Observed switchable dispersion/aggregation in pure water using alternate CO(2) and N(2) bubbling.

Main Results:

  • Successfully created polymer/SWNT hybrids with tunable properties.
  • Demonstrated a reversible hydrophobic-hydrophilic transition triggered by CO(2).
  • Achieved switchable dispersion and aggregation of the hybrids in water via gas bubbling.

Conclusions:

  • The developed polymer/SWNT hybrids act as "smart" nanomaterials.
  • The CO(2)-responsive polymer coating enables precise control over SWNT dispersion.
  • These materials hold potential for applications requiring switchable self-assembly and delivery systems.