Luminescence Characteristics of the Lanthanide Complex Incorporated into an ORMOSIL Matrix Using a Sol‐Gel Method

Abstract

Composite materials prepared by the incorporation of terbium bipyridyl complex into hybrid-type matrices, contaimng inorganic and organic oligomers, so-called ORMOSIL, were prepared by the sol-gel method and their luminescence property was studied. The resulting ORMOSIL: Tb(bpy) composite materials provided a strong green emission which was intensified upon elevating the temperature. In particular, the same emission intensity value as that of the LaPO4:Ce, Tb was observed for a composite material with 10 mole percent (mb) of the complex, ORMOSIL:Tb(bpy) (10 mb), after heating at 150°C in air. InfroductionLanthanide ions such as Eu3 and Tb form stable crys-

Synthesis and luminescence properties of mesophase silica thin films doped with in-situ formed europium complex

“…In an RE complex system, organic ligands can serve as an energy absorption antenna; then, via efficient intramolecular energy transfer, the RE ions obtain energy and exhibit intense characteristic emissions [9]. Moreover, RE complexes have been utilized as good dopants in many sol-gel materials for the fabrication of photo-active materials at low temperatures [10][11][12][13][14][15][16][17]. Organic ligands coordinated with RE ions in complexes shield the ions from impurities in the surrounding matrix and protect them from quenching by high-energy vibrations from sol-gel hosts.…”

White light emission ofEu3+-based hybrid xerogels

“…34 In particular, the advantages of the rich chemistry of silicon-based networks have been employed to synthesize amorphous and transparent hybrid organic/inorganic structures incorporating lanthanide salts. [35][36][37][38] The hybrid nature of these matrices improves the lanthanide cation emission and the mechanical stability of the sample, comparing to the conventional silica gel hosts. [35][36][37][38] Furthermore, due to the presence of a siliceous backbone skeleton some of the organic/inorganic gels themselves are luminescent between 14 K and room temperature.…”

“…[35][36][37][38] The hybrid nature of these matrices improves the lanthanide cation emission and the mechanical stability of the sample, comparing to the conventional silica gel hosts. [35][36][37][38] Furthermore, due to the presence of a siliceous backbone skeleton some of the organic/inorganic gels themselves are luminescent between 14 K and room temperature. [38][39][40][41][42][43] In spite of the potential technological relevance of that emission in several optics and electro-optics devices, such as, for instance, hybrid layers for optical data storage, optical waveguides, stable nonlinear optical materials, sensors or gel glasses dispersed liquid crystals, electrochromics hybrids for smart windows, 35,39 only a limited number of works has been focused on these light-emission features.…”

Construction and photoluminescence of amorphous silicone resins containing lanthanide ions as luminescent center

“…The systems like beta-diketone, 1,10-phenanthroline (Phen) and 2,2′-bipyridine (bpy) are well known as light-harvesting ligands for lanthanide ions and can provide extensive photophysical applications. They are optimized antenna of near-UV radiation due to efficient ligand-to-metal intramolecular energy transfer to lanthanide ions (Tb 3+ and Eu 3+ ) [9,10].…”