【摘要】 合成了3个新型开链冠醚Schiff碱-稀土离子三元配合物RE(H2L)(Mq)(NO3)3,其中RE=Nd3+,Er3+,Yb3+,配体H2L=N,N-双(邻羟苯亚甲基)-3,6-二氧杂-1,8-二氨基辛烷,Mq为8-羟基喹哪啶.采用元素分析、红外光谱(IR)、紫外-可见吸收光谱(UV-vis)、热重-差热分析(TG-DTG)等手段对配合物的组成结构进行了表征.测定了3种新型结构稀土三元配合物在不同温度(77 K和300 K)时的近红外发光光谱.更多还原

【Abstract】 The new complexes of rare earth with a noncyclic crown-type Schiff base ligand(H2L,N,N’-bis(salicylidene)-3,6-dioxa-1,8-diaminooctane) and 8-hydroxyquinaline were synthesised in methanol.The formulae RE(H2L)(Mq)(NO3)3,(RE=Nd,Er,Yb) were determind by elemental analysis,IR spectra,UV-vis spectra,and TG-DTA.The results indicate that the H2L is bonded to RE3+ in hexadentate via two phenolic hydroxyl oxygen atoms,two nitrogen atoms of schiff base and two oxygen atoms of the aliphatic C—O—C—group.The near-infrared luminescence of complexes in solid powder were determined under different temperature(77 K and 300 K).更多还原