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O. BORDIAN1,* , V. VERLAN1, I. CULEAC1, M. IOVU1, V. ZUBAREVA2
- Institute of Applied Physics of Academy of Sciences of Moldova, Chisinau, Republic of Moldova
- Institute of Chemistry of Academy of Sciences of Moldova, Chisinau, Republic of Moldova
We report preparation and characterization of new nanocomposite material based on oligomers poly-N-propyl carbazole (PEPC) and the organic compound Eu(o-MBA)3Phen, where o-MBA – ortho-methylbenzoic acid, Phen – phenanthroline. Nanocrystals Eu(o-MBA)3Phen with dimensions 20-50 nm have been incorporated into the polymer matrix PEPC with concentrations 5.78%, 2.73%, and 1.30%. Optical absorption thresholds are located in the range 3.34 - 3.40 eV in dependence on the concentration of Eu(o-MBA)3Phen compound. The photoluminescence spectra show a number of strong emmission bands, which are associated with the transitions 4D0→ 7 Fi (i = 0,1,2,3,4) in the 4f shell of the Eu3+ ion. Examination of the photoluminescence spectra of luminophore organic compound Eu(o-MBA)3Phen and nanocomposite PEPC/Eu(o-MBA)3Phen demonstrates the enhancement of the photoluminescence emission in PEPC/Eu(o-MBA)3Phen compared with Eu(o-MBA)3Phen.
Photoluminescence, Eu(o-MBA)3Phen, PEPC, Absorption, Nanocomposites.
Submitted at: Nov. 17, 2015
Accepted at: April 6, 2017
O. BORDIAN, V. VERLAN, I. CULEAC, M. IOVU, V. ZUBAREVA, Photoluminescente properties of Eu(o-MBA)3Phen organic compound embedded in PEPC polymer matrix, Journal of Optoelectronics and Advanced Materials Vol. 19, Iss. 3-4, pp. 223-227 (2017)
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