| The rare earth polymer materials have attracted considerable interests for they assume both good luminescent characteristics and high color purity of rare earths and the excellent machinability of polymers. Rare earth ions, having abundant emission spectrum, have been extensively used in inorganic and organic luminophores as an effective luminescent sources.However, rare earth inorganic materials have some problems such as poor processibility and high costing.The synthesis, characterization and properties of the Eu(â…¢) complexes of acetaacetone-polymethacrylic acid,benzoylacetone-polyacetamide, acetaacetone -acrylic acid-acrylonitrile, have been studied in this thesis. Three kinds of typical polymer ligands of polymethacrylic acid(PMAA) and polyacetamide(PAM) and benzoylacetone (BA) have been synthesized, and a detailed investigation on the formed coordination compounds with rare earth metals has been carried out as well.This paper consists of three parts as follow:(1) A brief review of the study for macromolecular metal complexes compounds and low temperature solid phase reaction have been given.(2) Polymethacrylic acid(PMAA) ligand was synthesized ,their compounds with rare earth nitrates and acetaacetone have been synthesized and characterized. The scheme of polymethacrylic acid(PMAA) ligand are showed as follow: The component and the scheme of PMAA-Eu-acac are showed respectively as follow: The carboxylates maybe are in the same chain or not.(3) Benzoylacetone(BA) ligand,polymer polyacetamide(PAM) ligands and their compounds with Eu (â…¢) have been synthesized and characterized. The component of the PAM and PAM -Eu-BA are:(4) A quarternary complex is synthesized by the reaction of metallorganic complex (NaEu(acac)4 ) with acrylic acid and acrylonitrile. The scheme of quarternary complex is showed as follow: The compound has been characterized by elemental ,UV spectra, IR spectra, conductance fluorescent. The result shows that the production has fixation compose when add Eu (â…¢) and small molecule into polymers after all these have reaction. The production is a good irradiance material.The outcome shows that the rare earth cordination polymers which have been synthesized have steady compose , are unsolvable in most organic solvent and have high decomposed temperature and excellent fluorescence property.(5) conclusion and constructionIntroduce the thesis'content and provide some construction.
|
PDF Full Text Request