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Multiwalled Carbon Nanotube-Clicked Poly(4-vinyl pyridine) as a Hairy Platform for the Immobilization of Gold Nanoparticles

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We report the design and characterization of a pH-responsive poly(vinylpyridine)-functionalized multiwalled carbon nanotubes (MWCNTs) and demonstrate the nanocomposite feasibility as an efficient platform for the immobilization of gold nanoparticles. Alkynylated aryl layers have been used as coupling agents to covalently bind the azide ATRP-beforehand synthesized poly(vinylpyridine) to the MWCNTs using Huisgen click reaction. The resulting nanocomposite [email protected] showed pH-dependent behavior, resulting in the protonation/deprotonation of the PVP amine groups, confirmed by XPS. TEM and XPS analyses reveal that the as-prepared hairy PVP chains were densely charged by gold nanoparticles.
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Keywords: ARYL DIAZONIUM SALTS; CARBON NANOTUBES; CLICK CHEMISTRY; GOLD NANOPARTICLES; POLYMER GRAFT

Document Type: Research Article

Publication date: March 1, 2013

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  • Journal of Colloid Science and Biotechnology is an international multidisciplinary peer- reviewed journal covering all aspects of colloid science including colloids preparation, characterization, structure-property relationships, spectroscopy, chemical and physical properties and applications of colloids in biotechnology, medicine and pharmaceuticals. This journal deals with interdisciplinary research areas of chemistry, physics, biology, materials science, polymer science, nanotechnology covering all topics related to colloids such as latexes, emulsions, suspensions, micellar systems, gels, composites, hybrids, surfactants, aerosols, foams, minerals, soft matter, microfluidics, encapsulation processes of active molecules, biomolecules, surfacial and interfacial processes, catalysis, electrochemistry, theoretical aspects, computer simulations and colloids in biotechnology and medicine.
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