摘要
以香豆素-3-羧酸为配体,在超声波辅助下,合成了两个铕-香豆素-3-羧酸配合物EuL3NO3和EuL2Cl2(L=香豆素-3-羧酸根阴离子),通过IR、1HNMR、13CNMR、MS和元素分析等表征手段,对配合物的结构和组成进行了表征,并对其荧光光谱性质进行了研究。结果表明,配体的羧酸、羰基基团均与铕离子配位;配合物EuL3NO3的荧光明显强于EuL2Cl2。
Two binary Eu^3+ complexes with coumarin-3-formic acid EuL3NO3 and EuL2Cl2 (L = coumarin-3-carboxylic anion), were synthesized and confirmed by IR, ^1HNMR, ^13CNMR, MS and elemental analysis. The results indicated that coumarin-3-carboxylic anion was bonded with Eu ( Ⅲ) through oxygen atoms in carboxyl and carbonyl groups. The fluorescence spectra showed that the fluorescence emission intensity of EuL3NO3 was stronger than that of EuL2Cl2.
出处
《化学试剂》
CAS
CSCD
北大核心
2011年第11期1045-1048,1053,共5页
Chemical Reagents
基金
广西壮族自治区教育厅科研基金资助项目(200807MS075200807MS076200911MS281200911MS282)
关键词
铕配合物
3-羧酸香豆素
合成
表征
荧光性质
europium complexes
coumarin-3-carboxylic acid
synthesis
characterization
fluorescence property