摘要
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.
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 ^1 H - 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 L2to the central Tb（Ⅲ） ions occurs in the complexe, and strong and characteristic green mission appears due to the ^5 D4 - ^7 F5 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.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2008年第3期299-303,共5页
Chemical Research and Application
基金
国家自然科学基金项目(20676152)
湖南省科技厅计划项目(05JT1022)
关键词
吡啶-2
6-二甲酸衍生物
铽配合物
稀土
发光
pyridine - 2,6 - dicarboxylic acid derivatives
terbium （Ⅲ ） complexe
rareearths
luminescence
