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系列d-f发光配位聚合物的研制及发光性能对比研究

【作者】 隋丽丽;

【导师】 牛淑云;

【作者基本信息】 辽宁师范大学 , 物理化学, 2005, 硕士

【摘要】 本文采用溶剂热反应方法,合成了4种Ag-Ln(d-f)配位聚合物,另有2个过渡和2个稀土配合物。全部得到了单晶体。经过X-光衍射测定,确定了它们的晶体结构,分子式如下: (1) {[NdAg2(C6H5NO2)4(H2O)2](NO3)H2O}n fl.λmax=412nm ;pl:417nm (2) [SmAg(C6H5NO2)4]n fl.λmax=431nm ;pl:531nm (3) [TbAg(C6H5NO2)4]n fl.λmax=546nm ; (4) [EuAg(C6H5NO2)4]n fl.λmax=417nm ;pl:544nm (5) [Ag2(C6H5NO2)2]n fl ?max=468nm; pl:549nm (6) Sm2(CH3C6H4CO2)6(phen)2 fl.λmax=617nm ; (7) Tb2(CH3C6H4CO2)6(phen)2 fl.λmax=616nm ; (8) [Cu(C6H4NO2)2(H2O)3·H2O] 重点研究了它们的光致发光性能。化合物(1)-(5)均可发出较强的兰色光。且化合物(1),(2),(4),(5)都有磷光发射,而且磷光寿命较长。化合物(6)(7)均发出很强的红光。在d-f配合物中具有2种不同的金属配位环境,一个只属于d金属离子,另一个只属于f金属离子,但2 种不同的金属之间又被配体桥联,使整个d-f 配合物具有无限结构。这些特殊结构类型及配位情况对配合物发光的波长和强度有较大的影响。对此,我们进行了较详尽的考察,分析和对比,找到了发光类型和结构关系的某些规律。这对于研究d-f 配合物中不同离子间相互作用及能量转移问题有重要理论意义,同时对调控d–f–有机配体类发光配合物发光波长和亮度的研究有重要的参考和实际意义。此外,我们还对化合物进行了IR,UV-VIS-NIR光谱的测定和分析,以有利于化合物发光性能的考察,分析和对比。

【Abstract】 Four novel d-f coordination polymers have been synthesized under hydrothermal condition, besides of two transition metal complexes and two rare earth complexes. The crystal structures are determined by X-ray diffraction and their formulas are presented as following: (1) {[NdAg2(C6H5NO2)4(H2O)2](NO3)H2O}n fl.λmax=412nm ;pl:417nm (2) [SmAg(C6H5NO2)4]n fl.λmax=431nm ;pl:531nm (3) [TbAg(C6H5NO2)4]n fl.λmax=546nm ; (4) [EuAg(C6H5NO2)4]n fl.λmax=417nm ;pl:544nm (5) [Ag2(C6H5NO2)2]n fl ?max=468nm; pl:549nm (6) Sm2(CH3C6H4CO2)6(phen)2 fl.λmax=617nm ; (7) Tb2(CH3C6H4CO2)6(phen)2 fl.λmax=616nm ; (8) [Cu(C6H4NO2)2(H2O)3·H2O]  Their photoluminescence are mainly studied and the fluorescent max emissions(fl.λmax; pl.λmax) are shown above. Complexes(1)~(5) can exhibit intense blue light. These complexes have phosphorescence emission except for complex(3). Moreover, they have long delay-time. Complexes(6)~(7) can exhibit strong red light. D-f complexes with two dissimilar metal coordination sites, one is specific for the d metal ion and another for the f metal ion. But these d-f complexes are bridged by ligands between two different metals forming infinite structures. These special structural types and coordination instance affected luminescent wavelength and intensity. So we seek some rules of the relationship between luminescence and structures by the elaborate analysis and contrast. They are theoretical significance for the research of interaction between different ions and the problems of energy transfer. At the time, They are significant referenced and practical significance to cortrol luminescent wavelength and luminance of d–f–organic–ligands luminescent complexes. In addition, their IR, UV-VIS-NIR spectrum are measured and investigated which are important help to further analyse and contrast the luminescent property.

  • 【分类号】O631.3
  • 【被引频次】1
  • 【下载频次】176
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