摘要
[目的]研究三脚架型稀土配合物的组成、配位状态及荧光性质。[方法]通过摩尔电导率、红外光谱、核磁共振波谱、元素分析、差热-热重分析,研究三脚架型配体2,2,2-胺三乙酰-苄胺（L）及其稀土配合物的组成、荧光性质。[结果]2,2,2-胺三乙酰-苄胺的稀土配合物的组成为：Re（NO3）3·L·4H2O（Re=La^3＋,Sm^3＋,Y^3＋,Tb^3＋,Ce^3＋,Eu^3＋）,在DMF中为2∶1型电解质,其中的NO3^-与金属离子以单齿形式配位。各稀土配合物在248～635℃出现2～3个放热峰,相应于配合物的各级氧化分解过程。Tb（NO3）3·L·4H2O配合物具有Tb3＋的特征尖锐线状荧光;在浓度为1×10^-4mol/L的甲醇溶液中,配合物的荧光强度最强。[结论]溶剂的极性越大,2,2,2-胺三乙酰-苄胺对Tb^3＋的敏化作用越强,配合物的荧光强度越强。
[Objective] The ahn was to study the composition, coordination status and fluorescence property of rare earth complex with tripod type. [ Method ] The composition and fluorescence property of 2,2,2-amine tri acetyl-benzylamine （L） with ligand of tripod type were studied through Molar conductivity, infrared spectrum, NMR, elemental analysis, thermal analysis, and UTA-TG analysis. [Result] The composition of the rare earth complex of 2,2,2-amine tri acetyl-benzylamine was Re（NO3）3·L·4H2O（Re=La^3＋,Sm^3＋,Y^3＋,Tb^3＋,Ce^3＋,Eu^3＋）, and 2：1 electrolyte in D.MF. in which NO3 coordinated with metal ion in the form of single tooth. Each rare earth complex emerged 2-3 exothennic peak at 248 - 635 ℃. corresponding to each level of oxidative decomposition course for complex, The complex Tb（NO3 ）3·L·4H2O had characteristics of cendyloma line shape of fluorescence of Th^3＋ ： in the methanol solution with concentration of 1 × 10^-4 tool/L, fluorescence intensity of complex was the strongest. [Conclusion： The polarity of solvent was getting larger, the sensitization of 2,2,2-amine tri acetyl-benzylamine to Th3＋ was more intense and fluorescence intensity of complex was stronger.
出处
《安徽农业科学》
CAS
北大核心
2008年第22期9365-9367,共3页
Journal of Anhui Agricultural Sciences
基金
宁夏自然科学基金资助项目(NZ0507)
宁夏大学科学研究基金资助项目
关键词
2
2
2-胺三乙酰-苄胺
稀土配合物
荧光性质
2,2,2-amine tri acetyl-benzylamine
Rare earth complexes
Fluorescence property
