Functionalization of Oxide Surfaces by Terpyridine Phosphonate Ligands: Surface Reactions and Anchoring Geometry (Articolo in rivista)

Type
Label
  • Functionalization of Oxide Surfaces by Terpyridine Phosphonate Ligands: Surface Reactions and Anchoring Geometry (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • Spampinato, V.; Tuccitto, N.; Quici, S.; Calabrese, V.; Marletta, G.; Torrisi, A.; Licciardello, A. (2010)
    Functionalization of Oxide Surfaces by Terpyridine Phosphonate Ligands: Surface Reactions and Anchoring Geometry
    in Langmuir
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Spampinato, V.; Tuccitto, N.; Quici, S.; Calabrese, V.; Marletta, G.; Torrisi, A.; Licciardello, A. (literal)
Pagina inizio
  • 8400 (literal)
Pagina fine
  • 8406 (literal)
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  • 26 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • DOI: 10.1021/la9048314 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [Valentina Spampinato, Nunzio Tuccitto, Giovanni Marletta, Antonino Licciardello] LAMSUN, Laboratorio di Superfici Molecolari e Nanotecnologie, Dipartimento di Scienze Chimiche Università degli Studi di Catania, viale A. Doria 6, 95125 Catania, Italy; [Silvio Quici, Valentina Calabrese] Istituto di Scienze e Tecnologie Molecolari del CNR (ISTM), via C. Golgi 19, 20133 Milano, Italy, and Polo Scientifico e Tecnologico (PTS), Consiglio Nazionale delle Ricerche (CNR), via Fantoli 16/15, 20138 Milano, Italy]; [Alberto Torrisi] Dipartimento di Scienze Chimiche Università degli Studi di Catania, viale A. Doria 6, 95125 Catania, Italy (literal)
Titolo
  • Functionalization of Oxide Surfaces by Terpyridine Phosphonate Ligands: Surface Reactions and Anchoring Geometry (literal)
Abstract
  • A strategy for creating a general-purposes surface functionalization platform is reported, based on direct attachment of phosphate groups onto hydroxylated surfaces and subsequent formation of a terpyridine-based monolayer. Such a platform is suitable for the construction, onto technologically relevant oxide surfaces, of single- and multilayer structures of interest in technological applications. In particular, the paper describes the successful attachment of 4-(2,2':6',2 ''-terpyridine-4-yl)benzenephosphonic acid (I, PPTP) onto a SiO2 surface previously functionalized by means of Zr-phosphate groups. Two alternative anchoring strategies of the PPTP were explored: (i) a direct one-step way, implying no protection of terpyridinie functionality, and (ii) a three-step way, implying protection and successive deprotection of this group. It was found that, in the First case, the PPTP ligand anchoring to the Zr-containing phosphate layer takes place by means of terpyridinic group. At variance of this, in the second case, due to the protection or the terpyridinic functionality, the anchoring process takes place through the phosphonic group, making the terpyridinic moiety available for further reactions. i.e., multilayer constructs. X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) were used to study the functionalized surfaces, providing information on coverage, chemical structure, and stoichiometry of the various functionalized layers and, among the others, clear evidence of the PPTP linkage and orientation. (literal)
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