期刊
JOURNAL OF LUMINESCENCE
卷 183, 期 -, 页码 108-112出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2016.11.029
关键词
Europium; Silica aerogels; Luminescence; Composites
类别
资金
- project Horizon 2020 Materials Networking [692146]
A simple two step procedure for the functionalization of hydrophobic silica aerogel microgranules with europium ions and/or 1,10 - phenanthroline is demonstrated. The activation procedure is based on soaking aerogels in a europium nitrate solution, followed by functionalization with 1,10 - phenanthroline. The functionalized materials display strong red or blue emission at UV-excitation, coming from the formation of [Eu(phen)(2)](NO3)(3) or Si(IV)- 1,10-phenathroline complexes in the porous system of the aerogels. The most probable site symmetry of the europium cation is C-2v confirmed by luminescence spectra analysis. Room temperature diffuse reflectance spectra and excitation/luminescence spectra are used to describe the optical properties of the hybrid composites. Excitation spectra prove an efficient energy transfer between 1,10 - phenanthroline and the Eu3+ ion. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据