Synthesis, crystal structure and photophysical properties of a neodymium trifluoroacetate complex with 2,2'-bipyridine  

作　　者：佘江波 李冬冬 侯超奇 杨文正 韦玮 彭波 

机构地区：[1]State Key Laboratory of Transient Optics and Photonics,Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences(CAS),Xi'an 710119,China [2]Institute of Advanced Materials,Nanjing University of Posts and Telecommunications,Nanjing 210003,China

出　　处：《Journal of Rare Earths》2011年第3期193-197,共5页稀土学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(60977023,10876009);CAS Special Grant for Postgraduate Research,Innovation and Practice

摘　　要：The neodymium trifluoroacetate complexes were synthesized and characterized by single-crystal X-ray diffraction for [Nd（CF3COO）3·Bpy·（H2O）3]Bpy（1）,elemental and TG analysis,FT-IR spectra,and PL spectra for Nd（CF3COO）3·Bpy（2）（Bpy：2,2＇-bipyri-dine）.The most interesting feature of the crystal structure for 1 is that it comprises a coordinated 2,2＇-bipyridine molecule and an out-sphere 2,2＇-bipyridine molecule.At the same time,the C-O distances appeared average which indicates the three atoms of carboxylato forming elec-tron-conjugate system.Hydrogen bond and π-π-stacking link the binuclear to two-dimensional sheet.The optical spectra for 2 exhibited that the complex possessed typical Nd（III） ion absorption and photoluminescence emission.The emission cross-section of 4F3/2→4I11/2 fluores-cence transition（3.63×10-20 cm2） was comparable with some laser glasses,which indicated good radiative properties of this neodymium trifluoroacetate complex in liquid matrix.The thermal analysis indicated that it was quite stable to heat.The neodymium trifluoroacetate complexes were synthesized and characterized by single-crystal X-ray diffraction for [Nd（CF3COO）3·Bpy·（H2O）3]Bpy（1）,elemental and TG analysis,FT-IR spectra,and PL spectra for Nd（CF3COO）3·Bpy（2）（Bpy：2,2＇-bipyri-dine）.The most interesting feature of the crystal structure for 1 is that it comprises a coordinated 2,2＇-bipyridine molecule and an out-sphere 2,2＇-bipyridine molecule.At the same time,the C-O distances appeared average which indicates the three atoms of carboxylato forming elec-tron-conjugate system.Hydrogen bond and π-π-stacking link the binuclear to two-dimensional sheet.The optical spectra for 2 exhibited that the complex possessed typical Nd（III） ion absorption and photoluminescence emission.The emission cross-section of 4F3/2→4I11/2 fluores-cence transition（3.63×10-20 cm2） was comparable with some laser glasses,which indicated good radiative properties of this neodymium trifluoroacetate complex in liquid matrix.The thermal analysis indicated that it was quite stable to heat.

关 键 词：neodymium trifluoroacetate 2 2＇-bipyridine crystal structure luminescent property rare earths 

分 类 号：O641.4[理学—物理化学]