Study On Fluorescent Hydrotalcite-like And Polyaniline Composite Materials

This thesis is mainly composed of two sections:the synthesis of a high blue fluorescent hydrotalcite-like compound and the preparation and characterization of a series of hydrotalcite-like compound/polymer composites.Firstly, a high blue fluorescent hydrotalcite-like compound (Zn-Hsal-HTLc) in which the Hsal and ZnMgAl-HTLc forming a special supramolecular structure have been synthesized by a coprecipitation method. The sample has been characterized by fluorescence spectrum, FT-IR, UV/Vis, XRD, TG-DSC, and its composition and structure were determined. It was found that the Zn-Hsal-HTLc could radiate high blue light (382nm) under ultraviolet radiation and the fluorescent-span is longer than the Zn-Hsal. Otherwise, the result of TG-DSC measurement clearly shows the enhanced thermal stability of the Zn-Hsal-HTLc compared with that of MgAl-HTLc. The Zn-Hsal-HTLc may become a promising candidate for the luminescent functional materials.Secondly, a series of composite material(Zn-Hsal-HTLc/PAN-CSA,Zn-HTLc/ PAN-CSA,Eu-HTLc/PAN-CSA) consisting of fluorescent Hydrotalcite-like Compound and conductive Polyaniline was synthesized by ultrasound method. The structure and properties have been characterized with XRD, XPS, Electrical Conductivity methods, Fluorescence Spectrum,UV-Vis and TG. The results indicated that the Composite material was a semiconductor material which could radiate strong-fluorescent.the Composite material had better thermal stability than the relevant PAN-CSA,The Composite material may become a promising candidate for a novel luminescent materials.