Spatially Confined Functionalization of Transparent NiO Thin Films with a Luminescent (1,10-Phenanthroline)-tris(2-thenoyltrifluoroacetonato)europium Monolayer

作者：Smecca Emanuele; Tudisco Cristina; Giuffrida Antonino E; Catalano Maria R; Speghini Adolfo; Malandrino Graziella; Condorelli Guglielmo G^*

来源：European Journal of Inorganic Chemistry, 2015, 2015(7): 1261-1268.

DOI：10.1002/ejic.201402479

• Nickel oxide
• Surface chemistry
• Phosphonic acid
• Luminescence
• Photoelectron spectroscopy

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.

• 出版日期2015-3