caa a22 4500 467920338 CHVBK 20180406152915.0 cr unu---uuuuu 170328e20060501xx s 000 0 eng 10.1007/s00706-006-0444-x doi (NATIONALLICENCE)springer-10.1007/s00706-006-0444-x Metal Oxoclusters as Molecular Building Blocks for the Development of Nanostructured Inorganic-Organic Hybrid Thin Films [Elektronische Daten] [Silvia Gross, Andrea Zattin, Vito Di Noto, Sandra Lavina] Summary.: Silica-based inorganic-organic hybrid thin films embedding the organically modified oxohafnium clusters (Hf4O2(OMc)12, OMc=OC(O)-C(CH3)=CH2) were obtained by photo-activated free radical copolymerisation of the methacrylate groups of the cluster with those of the pre-hydrolysed (methacryloxypropyl)trimethoxysilane (MAPTMS, (CH2=C(CH3)C(O)O)(CH2)3Si(OCH3)3). By this route, a covalent anchoring of the cluster to the forming silica network was achieved. Samples characterized by two different Si/Hf compositions (18:1, 5:1) were prepared. The surface and in-depth composition of the thin films were investigated through Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). XPS depth profiles performed on the thin layers evidenced a homogenous in depth distribution of the hafnium guest species within the whole silica films and sharp film-substrate interfaces. Broad band dielectric spectroscopy (BDS) measurements permitted to investigate the electric response of the obtained films in the frequency and temperature range of 40 Hz - 1 MHz and 0-160°C. Springer-Verlag, 2006 Keywords. Methacryloxytrialkoxysilanes nationallicence Inorganic-organic hybrid materials nationallicence Thin films nationallicence Broad band dielectric spectroscopy nationallicence Gross Silvia CNR-ISTM, Department of Chemistry, University of Padova and INSTM, I-35131, Padova, Italy aut Zattin Andrea Department of Chemistry, University of Padova, Padova, Italy aut Di Noto Vito Department of Chemistry, University of Padova, Padova, Italy aut Lavina Sandra Department of Chemistry, University of Padova, Padova, Italy aut Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/5(2006-05-01), 583-593 0026-9247 137:5<583 2006 137 706 https://doi.org/10.1007/s00706-006-0444-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00706-006-0444-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gross Silvia CNR-ISTM, Department of Chemistry, University of Padova and INSTM, I-35131, Padova, Italy aut NATIONALLICENCE 700 1- Zattin Andrea Department of Chemistry, University of Padova, Padova, Italy aut NATIONALLICENCE 700 1- Di Noto Vito Department of Chemistry, University of Padova, Padova, Italy aut NATIONALLICENCE 700 1- Lavina Sandra Department of Chemistry, University of Padova, Padova, Italy aut NATIONALLICENCE 773 0- Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/5(2006-05-01), 583-593 0026-9247 137:5<583 2006 137 706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer