Title of article :
Studies on photoluminescent properties of Eu(III) ions in composite europium complex/polymer systems
Author/Authors :
Liu، نويسنده , , Hong-Guo and Lee، نويسنده , , Yong-Ill and Feng، نويسنده , , Xu-Sheng and Xiao، نويسنده , , Fei and Zhang، نويسنده , , Li and Chen، نويسنده , , Xiao and Jang، نويسنده , , Kiwan and Seo، نويسنده , , Hyo-Jin، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
Europium complex Eu(DB-bpy)phenCl3(H2O)2 (phen: 1,10-phenanthroline, DB-bpy: 4,4′-di-tert-butyl-2,2′-dipyridyl) was doped in poly(methyl methacrylate) (PMMA) and poly(vinyl pyrrolidone) (PVP). The composite systems with various molar ratios of CO groups/Eu3+ ions were characterized by photoluminescent (PL) spectroscopy, X-ray diffractometry (XRD) and luminescent lifetime measurements. It was found that Eu3+ ions have more than one kind of symmetrical sites in Eu/PMMA composites and the PL spectra of Eu(III) change with the compositions. However, the composites of Eu/PVP with different molar ratios show similar PL spectra, indicating different influence of matrices on luminescent properties.
Keywords :
Luminescence , Composites , PMMA , PVP , Europium
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
