With Sm < Sup > 3 + < / Sup > Fluorescent Complexes And Its Preparation And Properties Of The Copolymer

Rare earth organic light-emitting material was widely used due to the unique electronic shell structure of rare earth ions which had the advantages of high luminous intensity, pure color and high efficiency fluorescence spectrum rich. Rare earth polymer luminescent material was superior to smaller molecular luminescence materials in rich raw materials, good stability, light weight, low cost, easy processing advantages, et al. In recent years, turning small molecular luminescence of rare earth materials into polymers was widely investigated.This paper was focused on the synthesis of complexes of rare earth polymer luminescent material and prepared a high molecular copolymer with fluorescent properties that began with synthesizing of luminous copolymer. The contents were as follows:1. Study on the synthesis and properties of Sm3+-containing complexesWith samarium oxide, a-methyl acrylic,1,10-phenanthroline,and8-hydroxyquinoline as raw materials, DMF as solvent, series of containing Sm3+of glow tie property were made by the method of total precipitation. The structure and composition of complexes were determined by infrared absorption spectrometry(IR) and Ultraviolet absorption spectra(UV), the morphology was measured by field emission scanning electron microscope(FESEM), and x-ray powder diffraction(XRD) and simultaneous thermal Analyzer(STA) were used to discuss the Crystal properties and thermal stability. The fluorescence properties of complexes was monitored by fluorescence spectrometer, and study on properties of the different ligand complexes and luminescence mechanism.2. The preparation and properties of PS-co-Srn(MAA)3phen copolymerA series of different Sm3+content PS-co-Sm(MAA)3phen fluorescence copolymers were prepared by free radical polymerization with Sm(MAA)3phen, styrene as monomers, dimethyl sulfoxide(DMSO) as solvent. The result of IR and UV absorption spectrometry of copolymers indicated that Sm(MAA)3phen combine with styrene in the way of bonding. The crystallization behavior and morphology was investigated by X-ray powder diffraction(XRD) and scanning electron microscope (SEM). Differential scanning calorimeter(DSC) and simultaneous thermal analyzer(STA) were used to study the thermal stability of the copolymers. The fluorescence properties of copolymers via fluorescence spectrometer showing that the fluorescence emission of copolymer was consistence with Sm(MAA)3phen complexes, which was also the characteristics emission of Sm3+. The fluorescence intensity of copolymers was enhanced with the increased content of Sm(MAA)3phen complex without concentration quenching.3. The preparation and properties of copolymerization of PS-co-Sm(Ox)2MAACopolymers PS-co-Sm(MAA)3were synthesized by solution polymerization, Sm(MAA)3and St as monomers, DMSO as solvent, was got by complexation reaction of PS-co-Sm(MAA)3dissolving in tetrahydrofuran and8-hydroxyquinoline. Infrared spectrometry, ultraviolet absorption spectroscopy and X-ray powder diffraction were utilized to study the structure and crystallinity of PS-co-Sm(Ox)2MAA, which indicated the similar structure of PS-co-Sm(Ox)2MAA and pure PS. The thermal stability of copolymers were studied by DSC. Through fluorescence spectrometer to test the fluorescence properties of copolymers. The results suggested that the emission wavelength of PS-co-Sm(Ox)2MAA was450nm with the excitation wavelength was375nm, which were perturbation ligand luminescent of rare ions and fluorescence intensity would increase with the content of copolymers in complex.The purport of this article:a system study of the fluorescence properties of Sm3+-containing complexes and its copolymer, the photoluminescence properties of8-hydroxyquinoline rare earth complexes and its copolymers, which underpinning the use of light-emitting materials.