6533b7defe1ef96bd1275d18
RESEARCH PRODUCT
Optical properties of biocompatible polyaniline nano-composites
Fabio LibrizziMaurizio LeoneGiuseppe SpadaroClelia DispenzaC. Lo PrestiValeria Vetrisubject
Conductive polymerchemistry.chemical_classificationBioelectronicsMaterials scienceNanocompositeBiocompatibilityNanoparticleBiomaterialNanotechnologyPolymerCondensed Matter PhysicsElectronic Optical and Magnetic Materialschemistry.chemical_compoundchemistryPolyanilineMaterials ChemistryCeramics and CompositesSettore CHIM/07 - Fondamenti Chimici Delle TecnologieBiomaterials optical spectroscopy atomic force and scanning tunneling microscopy scanning electron microscopy nanoparticles colloids and quantum structures nano-composites nanoparticles optical properties absorptiondescription
Abstract Polyaniline (PANI) is an electro-active polymer of great interest thanks to its outstanding physical and chemical properties which make it suitable for various applications in optics, bioelectronics, biosensors, diagnostics and therapeutic devices. Unfortunately, PANI is infusible and insoluble in most common solvents and, thus, very difficult to process. In the attempt of improving processability, yet preserving its interesting properties, PANI has been synthesized in the form of particles and dispersed into a hydrogel matrix. The synthesis of PANI–hydrogel composites proceeds via γ-irradiation of PANI dispersions as obtained by ‘in situ’ polymerization of aniline in the presence of water-soluble, polymeric stabilizers. The chosen stabilizers are able to undergo to chemical cross-linking when exposed to ionizing radiations, so forming the highly hydrophilic network that entrap PANI particles. The presence of a hydrogel matrix induces biocompatibility to the final composite material which, in a typical bottom-up approach, may become suitable for the development of biocompatible, optoelectronic devices. Some morphological and optical features of these novel soft, functional nano-composites are here presented.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-10-01 |