Synthesis and luminescent properties of ternary complex Eu(UVA)3Phen in nano-TiO2
| Autor: | Hong-bing Gao, Kui-lin Lü, Li Zhang, Zhongping Gong, Shu-jing Zhou, Yu-guang Lü, Du A, Hao-ran Du, Ying Wang, Fujun Zhang |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
business.industry Infrared Condensed Matter Physics medicine.disease_cause Photochemistry Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Indium tin oxide Excited state medicine Optoelectronics Electrical and Electronic Engineering business Luminescence Ternary operation Spectroscopy Ternary complex Ultraviolet |
| Zdroj: | Optoelectronics Letters. 11:41-44 |
| ISSN: | 1993-5013 1673-1905 |
| Popis: | By introducing 2-hydroxy-4-methoxy-benzophenone (UVA) and 1,10-phenanthroline (Phen) as the ligands, the ternary rare earth complex of Eu(UVA)3Phen is synthesized, and it is characterized by elemental analysis, mass spectra (MS) and infrared (IR) and ultraviolet (UV) spectroscopy. Results show that the Eu(III) in complex emits strong red luminescence when it is excited by UV light, and it has higher sensitized luminescent efficiency and longer lifetime. The organic-inorganic thin film of complex Eu(UVA)3Phen doped with nano-TiO2 is prepared, and the nano-TiO2 is used in the luminescence layer to change the luminescence property of Eu(UVA)3Phen. It is found that there is an efficient energy transfer process between ligands and metal ions. Moreover, in an indium tin oxide (ITO)/poly(N-vinylcar-bazole) (PVK)/Eu(UVA)3Phen/Al device, Eu3+ can be excited by intramolecular ligand-to-metal energy transfer process. The main peak of emission at 613 nm is attributed to 5D0→7F2 transition of the Eu3+, and this process results in the enhanced red emission. |
| Databáze: | OpenAIRE |
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