Effective Transfer of UV Energy to Red Luminescence in the Nanocomposites Polymer/Eu Coordination Compounds

VERLAN, V. I.; IOVU, M. S.; CULEAC, I.; BORDIAN, O.; ZUBAREVA, V. E.; NISTOR, Iu.

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Effective Transfer of UV Energy to Red Luminescence in the Nanocomposites Polymer/Eu Coordination Compounds

VERLAN, V. I.; IOVU, M. S.; CULEAC, I.; BORDIAN, O.; ZUBAREVA, V. E.; NISTOR, Iu.

URI: https://doi.org/10.1007/978-981-287-736-9_4
http://repository.utm.md/handle/5014/8172

Date: 2015

Abstract:

Nanocomposites (NCs) thin films based on oligomer poly-N-epoxypropylcarbazole (PEPC) and organic coordinated compounds (OCC) have been obtained by chemical methods. Absorption threshold for samples with different concentrations was determined as 3.34 - 3.4 eV. Photoluminescence spectra reveal a number of emission bands centered at 580, 590, 612-615, 651, and 700 nm, which can be associated to internal 4f - 4f transitions of Eu3+ ion 5D0 → 7Fi (i = 0,1,2,3 and 4). By comparing the photoluminescence spectra of the organic compound and of the PEPC/Eu(o-MBA)3Phen nanocomposite one can observe the amplification of the photoluminescence intensity in NC.