芳香羧酸钕配合物的合成及其光谱性质研究  

Synthesis and optical properties of neodymium complexes with aromatic acids

作　　者：伍爱明[1] 张秋慧[2] 肖蓉[1] 

机构地区：[1]四川大学化学工程学院,四川成都610065 [2]四川大学电子信息学院,四川成都610065

出　　处：《化学研究与应用》2011年第4期418-423,共6页Chemical Research and Application

基　　金：国家自然科学基金(10976017)资助项目

摘　　要：本文以1,10-phenanthroline为第二配体,Nd2O3与芳香羧直接反应合成了四种芳香羧酸钕配合物:NdF3phen(F:呋喃-2-甲酸、phen:1,10-phenanthroline)、NdT3phen(T:噻吩-2-甲酸)、NdB3phen(B:苯甲酸)、NdN3phen(N:1-萘甲酸)。产物用FTIR和元素分析对其组成进行了表征,并研究了这四个配合物溶于DMSO(二甲基亚砜)溶剂的吸收光谱和荧光光谱,溶液中所有氢均未氘代。对吸收光谱进行Judd-Ofelt理论计算分析,采用最小二乘法得到了它们的三个强度参数(Ω2、Ω4、Ω6)。在882～910nm、1067nm和1339～1377nm观察到了较强的Nd3+特征荧光峰,其相对强度呈现一定的规律,表现为杂环芳香羧酸配合物的荧光强度大于非杂环芳香羧酸配合物的荧光强度。因此,向配体的芳香环中尽可能地引入原子量较大的杂原子将有助于荧光强度的提高。Four neodymium（Ⅲ） complexes with aromatic carboxylic acids and 1,10-phenanthroline,NdL3phen（L：benzoic acid,1-naphthoic acid,furan-2-carboxylic acid and thiophene-2-carboxylic acid;phen： 1,10-phenanthroline）,were directly synthesized from the reaction of Nd2O3 and aromatic acids and characterized by FT-IR and elemental analysis.The Judd-Ofelt parameters（Ω2,Ω4,Ω6） were calculated from the UV-Vis absorption spectra in DMSO without deuteration.Strong emission of the complexes at 882~910nm,1067nm and 1339~1377nm,which were detected when excited at 808nm pumped by a laser diode,shown that the relative fluorescence intensity of the complexes containing heterocyclic carboxylic acids were stronger than the homocyclic carboxylic acids and the fluorescence intensity could be improved when heavy atoms were introduced into the aromatic ligands.

关 键 词：钕配合物 近红外 芳香羧酸 光学性质 液体激光 

分 类 号：O644.18[理学—物理化学]