Rare earth complexes with 3,4-dimethylbenzoic acid and 2,2:6,2''-terpyridine:Synthesis,crystal structures,luminescence and thermodynamic property
作者单位：Testing and Analysis CenterHebei Normal University College of Chemistry & Material ScienceHebei Normal University College of Chemical engineering& MaterialHandan University College of Chemistry and Chemical EngineeringLiaocheng University
会议名称：《中国化学会第十九届全国化学热力学和热分析学术会议》
会议日期：2018年
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
关 键 词：Lanthanide complexes Crystal structure TG/DSC-FTIR Thermodynamic properties Luminescent properties
摘 要：A series of ternary mononuclear complexes Ln(3,4-DMBA)(terpy)(HO),(Ln = Er(1),Ho(2)) and ternary dinuclear complexes [Ln(3,4-DMBA)(terpy)(HO)](Ln = Pr(3),Eu(4)) were successfully synthesized via conventional solution method at room temperature and characterized by element analysis,coordination titration analysis,powder x-ray and IR *** them,we obtained three kinds of single *** 1 and 2 were obtained with a coordination number of eight to form a distorted triangular dodecahedral,while complex 3 was nine-coordinated with a distorted triangular *** the temperature range from 300 K to 1200 K,the thermal decomposition mechanism of complexes 1-4 were investigated by the technology of TG/*** molar heat capacities of four complexes were discussed and compared by the DSC *** smoothed value of heat capacities and thermodynamic function(H-H) and(S-S) for the title complexes were calculated according to the fitted polynomial and thermodynamic *** beyond that,the luminescence spectra of complex 4 exhibited the characteristic emission of Eu ion(D→F),and the fluorescence lifetime of complex 4 was also discussed,then base on the emission data,the result of Coherent Infrared Energy(CIE) indicated the complex 4 was promising candidate for red component in ultraviolet.