Acta Phys. -Chim. Sin. ›› 2002, Vol. 18 ›› Issue (05): 399-413.doi: 10.3866/PKU.WHXB20020504
• ARTICLE •
Gao Gai-Ling;Fang Yu;Wang Ming-Zhen;Hu Dao-Dao
A series of Y3+ and Eu3+ complexes have been synthesized by taking benzoic acid,onitrobenzoic acid,mnitrobenzoic acid,pnitrobenzoic acid and 3,5dinitrobenzoic acid as ligands.Based upon the properties of the explosive decomposition of the complexes,a number of Y2O3:Eu nanocrystals have been prepared by solid state thermodecomposition.TEM,Xray diffraction analyses show that the Y2O3:Eu nanocrystallites have spherical structure,and the average size of the crystals is within 40～60 nm.Introduction of Eu3+ has little effect upon the crystal structure of the oxides.Furthermore,change in the structure of the ligands of the complexes does not affect the morphology and sizes of the final products significantly.Compared with the products from the nitro substituted benzoic acid complexes,however,the Y2O3:Eu nanocrystals obtained from benzoic acid complex aggregated severely.It is to be noted that annealing temperature has an obvious effect upon the sizes of the final products.The higher the temperature is,the larger the nanocrystals will be.Fluorescence measurements demonstrated clearly that all the Y2O3:Eu nanocrystallites luminescence similarly.But,the luminescent property of the one prepared by benzoic acid complex is the superior one.
Rare earth complex;Y2O3:Eu nano crystalline; Fluorescence;Benzoic acid;Solid state thermodecomposition
Gao Gai-Ling;Fang Yu;Wang Ming-Zhen;Hu Dao-Dao. Properties of Y2O3:Eu Nanocrystals Prepared by Thermodecomposition of Benzoic Acid[J].Acta Phys. -Chim. Sin., 2002, 18(05): 399-413.
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