摘要
通过分子设计,以吡啶-2,6-二甲酸为起始原料,合成了一种新型双吡唑啉酮吡啶配体:2,6-二(1-苯基4-乙氧羰基-5-吡唑啉酮-3-基)吡啶(H2L)。配体与稀土Eu(Ⅲ)和Tb(Ⅲ)离子成功螯合形成配合物。配体和配合物经FT-IR,1H NMR和元素分析进行表征,并确定配合物组成为RE2L3.4H2O。对配合物的紫外吸收和光致发光性能进行了检测,结果显示Eu(Ⅲ)和Tb(Ⅲ)离子能够有效地被有机配体敏化,发射出高亮、半峰宽狭窄的单色光。研究表明目标配合物能够成为优秀的发光材料。
A novel pyrazolone pyridine-containing ligand,2,6-bis（1-phenyl-4-ethoxycarbonyl-5-pyrazolone-3-yl）pyridine（H2L） was designed and synthesized starting from pyridine-2,6-dicarboxylic acid,and its corresponding Eu（Ⅲ） and Tb（Ⅲ） complexes were prepared.The ligand and complexes were characterized by FT-IR spectra,1H NMR and elemental analysis.And the composition formula of rare earth complexes was confirmed to be RE2L3·4H2O.The UV-vis absorption spectra and photoluminescence properties of the complexes were investigated.It showed that the Eu（Ⅲ） and Tb（Ⅲ） ions could be sensitized efficiently by the ligand（H2L）,and emitted monochromic light with high intensity and narrow half-peak width.The results showed that the complexes could be used as excellent luminescent materials.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2010年第5期531-535,共5页
Journal of the Chinese Society of Rare Earths
基金
中国博士后科学基金项目(20080431027)资助
关键词
吡唑啉酮配体
吡啶二甲酸
合成
稀土配合物
荧光性能
pyrazolone ligand
pyridine-2
6-dicarboxylic acid
synthesis
rare earth complexes
luminescent properties
