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

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Item Type: Tesi di dottorato
Lingua: English
Title: Hybrid organic/inorganic nanostructured systems obtained by self-assembly of block-copolymers
Creators:
CreatorsEmail
Chieffi, Gianpaologianpaolo.chieffi@unina.it
Date: 28 March 2013
Number of Pages: 152
Institution: Università degli Studi di Napoli Federico II
Department: Scienze fisiche
Scuola di dottorato: Ingegneria industriale
Dottorato: Tecnologie innovative per materiali, sensori ed imaging
Ciclo di dottorato: 25
Coordinatore del Corso di dottorato:
nomeemail
Lanotte, Lucianoluciano.lanotte@na.infn.it
Tutor:
nomeemail
Aronne, Antonioanaronne@unina.it
De Rosa, Claudioclaudio.derosa@unina.it
Date: 28 March 2013
Number of Pages: 152
Uncontrolled Keywords: 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
Date Deposited: 10 Apr 2013 12:28
Last Modified: 17 Jun 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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