Composition/structure relationships in monolithic borophosposilicate glasses obtained by the sol-gel route (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Composition/structure relationships in monolithic borophosposilicate glasses obtained by the sol-gel route (Articolo in rivista) (literal)

Anno

• 2004-01-01T00:00:00+01:00 (literal)

Alternative label

• C. Canevali, R. Scotti, A. Vedda, M. Mattoni, F. Morazzoni, L. Armelao, D. Barreca, G. Bottaro (2004)
  Composition/structure relationships in monolithic borophosposilicate glasses obtained by the sol-gel route
  in Chemistry of materials
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• C. Canevali, R. Scotti, A. Vedda, M. Mattoni, F. Morazzoni, L. Armelao, D. Barreca, G. Bottaro (literal)

Pagina inizio

• 315 (literal)

Pagina fine

• 320 (literal)

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• 16 (literal)

Rivista

• Chemistry of materials (Rivista)

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• 6 (literal)

Note

• ISI Web of Science (WOS) (literal)

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• 1,2,3,4,5: Dipartimento di Scienza dei Materiali and INSTM, Università degli Studi di Milano-Bicocca, via Cozzi 53, 20125 Milano, Italy 6,7: Istituto di Scienze e Tecnologie Molecolari del CNR and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy 8: Dipartimento di Scienze Chimiche, Università di Padova and INSTM, Via Marzolo 1, 35131 Padova, Italy (literal)

Titolo

• Composition/structure relationships in monolithic borophosposilicate glasses obtained by the sol-gel route (literal)

Abstract

• Monolithic borophosphosilicate glasses were prepared by the sol-gel route through xerogel densification. Tetramethoxysilane (Si(OCH3)4), trimethylborate (B(OCH3)3), and trimethyl phosphite (P(OCH3)3) were used as source compounds for Si, B, and P, respectively. After drying, samples underwent thermal treatment up to 700 °C with alternating flowing oxygen and reduced pressure steps, resulting in transparent, monolithic glasses. The sample chemical composition was analyzed by X-ray photoelectron spectroscopy (XPS). Densification was investigated by vibrational spectroscopies (FT-IR, micro-Raman). The boron oxygen hole centers (BOHC) and phosphorus oxygen hole centers (POHC) paramagnetic defects generated by X-ray irradiation of glasses were studied by electron paramagnetic resonance (EPR) spectroscopy. The results obtained on borophosphosilicate glasses showed that paramagnetic defects are not created by independent processes, as expected for randomly distributed noninteracting B and P doping elements. Diamagnetic precursors of BOHC and POHC are thus proposed to be spatially close together in the glasses. (literal)

Prodotto di

• Progettazione molecolare di nanosistemi organizzati (PM.P05.007.001) (Modulo)
• Istituto di scienze e tecnologie molecolari (ISTM) (Istituto)

Autore CNR

• DAVIDE BARRECA (Persona)
• LIDIA ARMELAO (Unità di personale interno)
• GREGORIO BOTTARO (Unità di personale interno)

Incoming links:

Prodotto

• Istituto di scienze e tecnologie molecolari (ISTM) (Istituto)
• Progettazione molecolare di nanosistemi organizzati (PM.P05.007.001) (Modulo)

Autore CNR di

• DAVIDE BARRECA (Persona)
• LIDIA ARMELAO (Unità di personale interno)
• GREGORIO BOTTARO (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Chemistry of materials (Rivista)