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• 作者：N. Danchova (1)
  S. Gutzov (1)
  K. Matras-Postolek (2)
  M. Bredol (2)
  N. Lesev (3)
  S. Kaloyanova (3)
  T. Deligeorgiev (3)
  
• 关键词：Eu complexes ; Sol–gel ; Optical materials
• 刊名：Journal of Inclusion Phenomena and Macrocyclic Chemistry
• 出版年：2014
• 出版时间：April 2014
• 年：2014
• 卷：78
• 期：1-4
• 页码：381-386
• 全文大小：314 KB
• 作者单位：N. Danchova (1)
  S. Gutzov (1)
  K. Matras-Postolek (2)
  M. Bredol (2)
  N. Lesev (3)
  S. Kaloyanova (3)
  T. Deligeorgiev (3)
  
  1. Department of Physical Chemistry, Faculty of Chemistry and Pharmacy, University of Sofia, Sofia, Bulgaria
  2. FB Chemieingenieurwesen, FH Münster, Steinfurt, Germany
  3. Department of Applied Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Sofia, Sofia, Bulgaria
  
• ISSN：1573-1111

文摘

Preparation methods and optical properties of silica sol–gel microparticles functionalized with [Eu(ntac)3][pphendcn] and [Eu(phen)2](NO3)3 [ntac?=?1-(2-naphthoyl)-3,3,3-trifluoroacetone, pphendcn?=?pyrazino[2,3-f][1,10-phenanthroline-2,3-dicarbonitrile, phen?=?1,10-phenanthroline] complexes displaying an energy transfer are discussed. Adsorption of [Eu(ntac)3][pphendcn] on the silica surface leads to strong red emitting samples. A method for functionalization of SiO2:Eu3+ with 1,10-phenanthroline is described. Diffuse reflectance spectra, excitation/emission spectra and quantum yield measurements of the investigated solids are presented. The studies are supported by chemical analysis, NMR data, IR spectra and X-ray diffraction measurements of the functionalized powders.