| Conjugated polymers (e.g., polyacetylenes, polythiophenes, polyanilines etc.) exhibit interesting properties for the development of lightweight batteries, light-emitting diodes, optical switches, etc. On the other hand, monodisperse conjugated oligomers could also act as excellent materials, because studies on the conjugated oligomers have revealed oligomers has further appliance than polyanilines.In this thesis, we developed a methods to synthesize oligoanilnes—polyimides graded membrane and the properties of membrane were studied. (1) Synthesize poly(amic acid) by s-BPDA and 4,4'-ODA at 1:1(mol ratio ) in DMAC.(2) Monodispersed phenyl-capped tetraaniline was added to the poly(amic acid) at different ratio,then the mixture was mixed with ultrasonic for 15h . The mixture is heated at different temperature after cast on glass plate ,and then we got the graded membrane. (3) Membrane were characterized by Reflective UV-Vis spectra, XPS spectra,SEM,CA,DSC,TGA and Tensile Test. The tests results have revealed that we have got the objective membrane , and a further research is needed. |
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