Chieffi, Gianpaolo
(2013)
Hybrid organic/inorganic nanostructured systems obtained by self-assembly of block-copolymers.
[Tesi di dottorato]
| 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 |
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| 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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