Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry in the Study of Polycondensation of Ti(OBun)4 in the Presence of Si(OEt)4 (Articolo in rivista)

Type
Label
  • Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry in the Study of Polycondensation of Ti(OBun)4 in the Presence of Si(OEt)4 (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/rcm.1231 (literal)
Alternative label
  • Seraglia R., Armelao L., Cristoni S., Gross S., Tondello E., Traldi P. (2003)
    Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry in the Study of Polycondensation of Ti(OBun)4 in the Presence of Si(OEt)4
    in RCM. Rapid communications in mass spectrometry
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Seraglia R., Armelao L., Cristoni S., Gross S., Tondello E., Traldi P. (literal)
Pagina inizio
  • 2649 (literal)
Pagina fine
  • 2654 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 17 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 23 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, ISTM, I-35100 Padua, Italy Dipartimento Chim Inorgan Metallorgan & Analit, I-35100 Padua, Italy Univ Studi Milano, CISI, I-20010 Milan, Italy (literal)
Titolo
  • Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry in the Study of Polycondensation of Ti(OBun)4 in the Presence of Si(OEt)4 (literal)
Abstract
  • The hydrolysis-polycondensation behaviour of alcoholic solutions containing Si(OEt)(4) and Ti(OBun)(4), in different molar ratios (Si/Ti=10-0.2), was analysed by laser desorption/ionisation (LDI) and matrix-assisted laser desorption/ionisation (MALDI) mass spectrometry. The solutions were prepared using operating conditions usually employed in the sol-gel synthesis Of SiO2-TiO2 materials. In accord with the well-known procedures for controlling the different chemical reactivities of the alkoxides, the pre-hydrolysis of the slower reacting silicon ethoxide and the chelation by acetylacetone of the faster reacting titanium butoxide were performed before mass spectrometric analysis. While LDI-MS did not provide evidence for the presence of mixed Si-Ti species in samples obtained from these reactions, MALDI-MS of samples diluted with chloroform and using 2,5-dihydroxybenzoic acid (DHB) as matrix led to detection of various oligomers with different contents of Si and Ti atoms. The results suggest that the formation of Si-Ti mixed oligomers seems to be the favoured process, especially for solutions in which one of the two components is diluted. (literal)
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