Chieffi, Gianpaolo (2013) Hybrid organic/inorganic nanostructured systems obtained by self-assembly of block-copolymers. [Tesi di dottorato]
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| Tipologia del documento: | Tesi di dottorato |
|---|---|
| Lingua: | English |
| Titolo: | Hybrid organic/inorganic nanostructured systems obtained by self-assembly of block-copolymers |
| Autori: | Autore Email Chieffi, Gianpaolo gianpaolo.chieffi@unina.it |
| Data: | 28 Marzo 2013 |
| Numero di pagine: | 152 |
| Istituzione: | Università degli Studi di Napoli Federico II |
| Dipartimento: | Scienze fisiche |
| Scuola di dottorato: | Ingegneria industriale |
| Dottorato: | Tecnologie innovative per materiali, sensori ed imaging |
| Ciclo di dottorato: | 25 |
| Coordinatore del Corso di dottorato: | nome email Lanotte, Luciano luciano.lanotte@na.infn.it |
| Tutor: | nome email Aronne, Antonio anaronne@unina.it De Rosa, Claudio claudio.derosa@unina.it |
| Data: | 28 Marzo 2013 |
| Numero di pagine: | 152 |
| Parole chiave: | hybrid nanocomposites; sol-gel; block copolymer |
| Settori scientifico-disciplinari del MIUR: | Area 03 - Scienze chimiche > CHIM/04 - Chimica industriale Area 03 - Scienze chimiche > CHIM/07 - Fondamenti chimici delle tecnologie |
| Aree tematiche (7° programma Quadro): | NANOSCIENZE, NANOTECNOLOGIE, MATERIALE E PRODUZIONE > Materiali |
| Depositato il: | 10 Apr 2013 12:28 |
| Ultima modifica: | 17 Giu 2014 06:04 |
| URI: | http://www.fedoa.unina.it/id/eprint/9113 |
Abstract
An amphiphilic polystyrene-b-poly(ethylene-oxide) (PS-b-PEO) diblock copolymer (BCP) was used as template for the incorporation of metal oxide nanoparticles, namely TiO2 or Nb2O5 using the sol-gel method. This study was aimed to the preparation of neat BCP and hybrid thin films by spin-coating. The hydrophilic sol–gel precursor of the metal oxides was selectively incorporated into hydrophilic PEO domains of BCP organized in a hexagonal array of vertical cylinders embedded in the PS matrix. Removal of polymer matrix by heat-treatment produced a nearly periodic array of TiO2 or Nb2O5 nanoparticles reminiscent of original hexagonal nanostructure. A novel solvent annealing procedure was developed in order to improve the morphological order of the neat copolymer and of the hybrid materials. BCP/TiO2 hybrid and heat treated thin films were used as conductometric sensors to detect soot nanoparticles (PM 0.1 and 0.01).
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