The intramolecular energy transfer of ortho-phthalic acid-terbium[Tb(phth)_3]and ortho-toluic acid-terbium[Tb(tolu)_3],the intermolecular energy transfer from Tb(phth)_3 to Eu^(3+) in solution and their luminescent pr...The intramolecular energy transfer of ortho-phthalic acid-terbium[Tb(phth)_3]and ortho-toluic acid-terbium[Tb(tolu)_3],the intermolecular energy transfer from Tb(phth)_3 to Eu^(3+) in solution and their luminescent property have been studied by absorption,Infrared,fluorescence and time-resolved emission spectroscopic method.The influences of solvents and pH of the media on the emission intensity and the lifetime are discussed as well.展开更多
On the basis of 2,6-bisbenzoylactyl pyridine(L1), 2,6-bis[(3-pyrazoleyl) -5-phenyl]pyridine (L2)and2,6-bis[(3-pyrazoleyl)-3,5-bisphenyl]pyridine(L3) are synthesized. With the synthesized organic compounds as organic l...On the basis of 2,6-bisbenzoylactyl pyridine(L1), 2,6-bis[(3-pyrazoleyl) -5-phenyl]pyridine (L2)and2,6-bis[(3-pyrazoleyl)-3,5-bisphenyl]pyridine(L3) are synthesized. With the synthesized organic compounds as organic ligands, corresponding terbium(Ⅲ) complexes are prepared .The composition of these new compounds are confirmed by 1H-NMR, EA , IR spectrum , UV spectrum and MS .The properties of the complexes are characterized by EA,IR spectrum ,UV spectrum,TG-DTA and fluorescence spectra. Photoluminescence measurements indicate that the effective energy transfer from the organic ligand L2 to the central Tb(Ⅲ) ions occurs in the complexe, and strong and characteristic green mission appears due to the 5D4- 7F5 transitions of the 4f electrons of the central Tb(Ⅲ) ions. The fluorescence spectra shows that the fluorescence emission intensity of Tb(L2) 3·3H2O is stronger than that of Tb2(L1) 3·4H2O,but the property of TG-DTA is not so good as we expected. It cannot be the best material for fabrication of organic light-emitting devices.展开更多
文摘The intramolecular energy transfer of ortho-phthalic acid-terbium[Tb(phth)_3]and ortho-toluic acid-terbium[Tb(tolu)_3],the intermolecular energy transfer from Tb(phth)_3 to Eu^(3+) in solution and their luminescent property have been studied by absorption,Infrared,fluorescence and time-resolved emission spectroscopic method.The influences of solvents and pH of the media on the emission intensity and the lifetime are discussed as well.
文摘On the basis of 2,6-bisbenzoylactyl pyridine(L1), 2,6-bis[(3-pyrazoleyl) -5-phenyl]pyridine (L2)and2,6-bis[(3-pyrazoleyl)-3,5-bisphenyl]pyridine(L3) are synthesized. With the synthesized organic compounds as organic ligands, corresponding terbium(Ⅲ) complexes are prepared .The composition of these new compounds are confirmed by 1H-NMR, EA , IR spectrum , UV spectrum and MS .The properties of the complexes are characterized by EA,IR spectrum ,UV spectrum,TG-DTA and fluorescence spectra. Photoluminescence measurements indicate that the effective energy transfer from the organic ligand L2 to the central Tb(Ⅲ) ions occurs in the complexe, and strong and characteristic green mission appears due to the 5D4- 7F5 transitions of the 4f electrons of the central Tb(Ⅲ) ions. The fluorescence spectra shows that the fluorescence emission intensity of Tb(L2) 3·3H2O is stronger than that of Tb2(L1) 3·4H2O,but the property of TG-DTA is not so good as we expected. It cannot be the best material for fabrication of organic light-emitting devices.
