Synthesis, Characterization And Fluorescence Properties Of Polyaniline

In comparison with other conjugate polymer, the prices of Polyaniline is cheap andabundant, which can be easily polymerization, with high conductivity and a broad prospectfor application. This thesis apply Liquid-state and Solid-state synthesis method,the dopedPolyaniline were prepared when 1:6-structure Polyoxometallates and Fluorescein as dopant.respectively,the materials were characterized by UV-Vis,IR,TG-DTA,XRD. Andfluorescence properties,conductivity,solubility in different solvents were determined.1.Two different synthesis method obtained Polyaniline doped with Anderson-structurePolyoxometallates have similar UV-Vis,IR spectroscopy,Liquid-state and Solid-state methodobtained materials have different weightlessness process. the materials, XRD indicatesSolid-state method obtained materials have better crystallization properties. All materials,conductivity were in range of 10-2 s.cm-1,and the highest conductivity was 2.3×10-2s.cm-1.The highest solubility of the materials were in DMF aqueous,and was 0.83 mg.ml-1.The fluorescence properties showed that there were fluorescence emission band at 425 nmand 567 nm,the intensity were 176.76 and 539.09.2. The Polyaniline doped with Fluorescein were characterized byIR, XRD spectroscopyand TG-DTA. The influence of oxidizing agent were studied. XRD indicates Solid-statemethod obtained materials have better fluorescence properties. In acidic aqueous or neutralaqueous there were fluorescence emission band at 512 nm,With the oxidizing agentincreasing,the fluorescence intensity is lower. With the oxidizing agent reducing,the dopedPolyaniline have better fluorescence properties. All materials obtained by Liquid-state methodhave lower fluorescence intensity. Solid-state synthesis materials have high fluorescenceintensity,and it was 279.17.