Preparation of Smart Polymer/Carbon Nanotube Conjugates via Stimuli-Responsive Linkages

In this paper, we modified carbon nanotubes with the thiol‐reactive species, subsequently combined the thiol‐coupling reaction and reversible addition‐fragmentation chain transfer (RAFT) polymerization to prepare temperature‐responsive PNIPAAm (poly(N‐isopropylacrylamide))‐carbon nanotube conjugates...

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Bibliographic Details
Published in:Advanced functional materials 2007-09, Vol.17 (14), p.2470-2477
Main Authors: You, Y.-Z., Hong, C.-Y., Pan, C.-Y.
Format: Article
Language:English
Subjects:
Biomaterials
Carbon nanotube composites
Glutathione
Polymer nanocomposites
Stimuli-responsive materials
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Summary:In this paper, we modified carbon nanotubes with the thiol‐reactive species, subsequently combined the thiol‐coupling reaction and reversible addition‐fragmentation chain transfer (RAFT) polymerization to prepare temperature‐responsive PNIPAAm (poly(N‐isopropylacrylamide))‐carbon nanotube conjugates. The prepared PNIPAAm‐carbon nanotube conjugates have temperature‐responsive PNIPAAm chain, and disulfide linkages between PNIPAAm and carbon nanotube which are sensitive to bio‐stimuli such as glutathione, therefore dual‐responsive polymer‐carbon nanotube conjugates have been prepared. PNIPAAm‐carbon nanotube conjugates having a temperature‐responsive PNIPAAm chain and smart linkages between the PNIPAAm and the carbon nanotubes are prepared via thiol‐coupling reactions. The smart linkages are sensitive to biostimulants such as glutathione: a high concentration of glutathione can cleave the linkages while a low concentration of glutathione has a minimum effect on the smart linkages.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.200600742