SWCNTs Dispersion via an Amphiphilic Polymer (Abstract/Poster in atti di convegno)

Type
Label
  • SWCNTs Dispersion via an Amphiphilic Polymer (Abstract/Poster in atti di convegno) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Alternative label
  • Eleonora Pavoni,a Massimo Benaglia,a Elisa Bandini,a Giacomo Bergamini,b Jennifer Molloy,b Paola Ceroni,b Nicola Armaroli,a (2013)
    SWCNTs Dispersion via an Amphiphilic Polymer
    in Suprachem 2013 - XI Congresso Nazionale di Chimica Supramolecolare, Padova (Italy), September 24-27, 2013
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Eleonora Pavoni,a Massimo Benaglia,a Elisa Bandini,a Giacomo Bergamini,b Jennifer Molloy,b Paola Ceroni,b Nicola Armaroli,a (literal)
Pagina inizio
  • P44 (literal)
Pagina fine
  • P44 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • Suprachem 2013 - PROCEEDINGS (literal)
Note
  • Poster (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, via P. Gobetti, 101, 40129 Bologna, Italy. b Dipartimento di Chimica ''G. Ciamician'', Centro di ricerca interuniversitario per la conversione chimica dell'energia solare, Università di Bologna, via Selmi 2, 40126 Bologna, Italy. (literal)
Titolo
  • SWCNTs Dispersion via an Amphiphilic Polymer (literal)
Abstract
  • Single-walled carbon nanotubes (SWCNTs) exhibit excellent mechanical, electrical, thermal, and optical properties. They are considered promising materials for a number of applications for which, however, individual SWCNTs are required instead of the complex mixture of metallic and semiconducting species obtained upon their preparation. The establishment of dispersion and separation protocols for SWCNTs is therefore of capital importance to enable their effective exploitation. There are many different approaches for the dispersion of SWCNTs, which typically entail non-covalent interactions between amphiphilic molecules and the wall of the tubes in aqueous solution. Common surfactants (e.g. SDS, SC, SDBS) are typically used for this purpose. We report an effective strategy for the preparation of single-walled carbon nanotube dispersions, based on the use of an amphiphilic polymer (PHMPMA-b-PSt) and compare it with a standard surfactant (SDBS) and another polymer lacking pendant phenyl groups (PHMPMA-b-PMMA). The polymers used in this work are new and obtained by post-polymerization treatments of RAFT synthesized poly(glycidyl methacrylate) (PGMA). We found that the polymer can form micelles around the SWCNTs through its hydrophobic chain, whilst the hydrophilic part prompts dispersion in water. The excellent dispersion capability of our polymer is demonstrated by electronic absorption spectra, photoluminescence mapping of the SWCNTs (Figure 1) and AFM studies. 1 H. Wang, Curr. Opin. Colloid Interface Sci., 2009, 14, 364-371. 2 M. Benaglia, A. Alberti, L. Giorgini, F. Magnoni and S. Tozzi, Polym. Chem., 2013, 4, 124-132. (literal)
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