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Z. Naturforsch. 2014,
69b, 224 – 230
doi:10.5560/ZNB.2014-3261
Functionalization of Sol-Gel Zirconia Composites with Europium Complexes
Department of Physical Chemistry, Faculty of Chemistry and Pharmacy, University of Sofia ''St Kliment Ohridski'', J. Bourchier Blvd 1, 1164 Sofia, Bulgaria
Reprint requests to Stoyan Gutzov. Phone: 003592 8161 281. E-mail:
sgutzov@chem.uni-sofia.bg
Received July 29, 2013 / published online February 17, 2014
Different sol-gel strategies based on functionalization of ZrO2:Eu microparticles with 1,10-phenanthroline (phen) and incorporation of colloidal Eu(phen)2(NO3)3 into zirconia have been used to obtain hybrid sol-gel composites with controlled optical properties. The process leads to materials with quantum yields of about 48 % monitoring the 615 nm emission line at 350 nm excitation. Excitation/luminescence spectroscopy, diffuse reflectance spectroscopy and X-ray diffraction have been used to characterize the hybrid zirconia composites.
Key words: Sol-Gel, Zirconia, Europium, Hybrid Composites