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Journal
2013 | 11 | 7 | 1032-1041
Article title

Synthesis of terbium(III) complex with a biscoumarin derivative and its immobilization in PMMA-based composite thin films with fluorescent properties

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EN
Abstracts
EN
An amorphous complex of Tb(III) with the biscoumarin derivative 3,3′-[(4-hydroxyphenyl)methylene)]bis-(4-hydroxy-2H-1-benzopyran-2-one), Tb(H2L)3, was successfully synthesized and characterized. IR- and 1H-NMR-spectroscopy were used to investigate the coordination of the ligand around the Tb(III) ion. Values for the quantum yield and the life time of the excited state of the complex were obtained. The complex was immobilized in transparent and flexible PMMA-based films by a simple casting technique. PMMA/chloroform solutions were used in synthetic procedures that resulted in both glass-supported and self-supporting nanocomposite films. The morphology of the films was studied by scanning electron microscopy, atomic force microscopy and transmission electron microscopy, showing the formation of crack-free films. The presence of the Tb(III) complex in the matrix was proven by the presence of characteristic bands in the IR spectra. Fluorescence microscopy and fluorescence spectroscopy demonstrated the promising optical properties of the films showing the characteristic emission bands of the Tb(III) ions. The longer life time of the excited state of the immobilized complex confirmed the protective role of the PMMA matrix on the optical properties of the complex. The composite films possessing optical properties have the potential for application as active components in optical devices. [...]
Publisher

Journal
Year
Volume
11
Issue
7
Pages
1032-1041
Physical description
Dates
published
1 - 7 - 2013
online
26 - 4 - 2013
Contributors
  • Faculty of Chemistry and Pharmacy, Department of Inorganic Chemistry, Sofia University, 1164, Sofia, Bulgaria
  • Faculty of Chemistry and Pharmacy, Department of Inorganic Chemistry, Sofia University, 1164, Sofia, Bulgaria
  • Faculty of Chemistry and Pharmacy, Department of Inorganic Chemistry, Sofia University, 1164, Sofia, Bulgaria
author
  • Faculty of Pharmacy, Department of Organic Chemistry, Medical University, 1000, Sofia, Bulgaria
  • Faculty of Chemistry and Pharmacy, Department of Inorganic Chemistry, Sofia University, 1164, Sofia, Bulgaria, mariamilanova2@abv.bg
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11532-013-0237-0
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