期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 7, 页码 1261-1268出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201402479
关键词
Nickel oxide; Surface chemistry; Phosphonic acid; Luminescence; Photoelectron spectroscopy
资金
- Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR) through FIRB RIN-AME Rete Integrata per la NAnoMEdicina [RBAP114AMK]
- Performance in Lighting S.p.A., Colognola ai Colli, Verona, Italy
Transparent MOCVD-grown NiO films have been functionalized with the luminescent (1,10-phenanthroline)tris(2-thenoyltrifluoroacetonato)europium(III) complex [Eu(TTA)(3)phen] by combining sputter activation with a solution synthetic route. To introduce the Eu complex only on selected regions, some areas of the NiO surface were activated by Ar+ ion sputtering and then functionalized with 3-phosphonopropionic acid (CPPA) followed by the anchoring of Eu(TTA)(3)phen through a ligand-exchange reaction between -diketonato ligands and the carboxylic groups of CPPA. The functionalized material was characterized by X-ray photoelectron, UV/Vis and luminescence spectroscopy. XPS measurements indicated that CPPA prefunctionalization and, in turn, the Eu(TTA)(3)phen anchoring occurs only on the sputter-activated region, while no anchoring takes place on the unactivated surface. The optical properties of the Eu(TTA)(3)phen-NiO system were evaluated by UV/Vis and luminescence spectroscopy.
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