Polyelectrolytes, Fabrication And Micropattern Of Self-assembly Ultra-thin Film

The dissertation is composed of the following two parts.In the first part, firstly the interaction of the synthesized poly(sodium sulfodecyl methacrylate) (PSSDM) with the oppositely charged surfactant of cetyltrimethyl ammonium bromide (CTAB) was studied. The viscosity measurement of PSSDM aqueous solution with different concentration of CTAB confirms that there exist two maxima of the solution viscosity at the molar ratio (CTAB/―SO3?) of ~0.68 and ~1.30, which are related closely to the network of the interpolymers due to the formation of micellar clusters and the mixed micelles composed of polymer's hydrophobic chains and surfactant, respectively.Secondly a new complex was prepared from 1,1,4,4,-tetramethylpiperazinuim dibromide (TMPDB) and sodium sulfodecyl methylacrylate (SSDMA) via electrostatic interaction. It was verified that the dissolution temperature (Td) of the stochiometric complex in water can be modulated with the addition of NaCl and SSDMA. The complex can be polymerized in the solid state under UV irradiation of 254nm owing to its ordered lamellar structure, which has been confirmed by X-ray diffraction (XRD).In the second part the studies were focused on:1. The self-assembly of chitosan (CS) with bovine serum albumin (BSA) was studied with the radio-labeled method. The effects of the experimental conditions, such as pH, molecular weight of CS, ionic strength and polyanions coexisting in BSA solution, on the self-assembly and the stability of assembled films were also investigated.2. The photosensitive functional ultrathin films were fabricated by layer-by-layer via electrostatic interaction of the photoreactive polyelectrolyte of diazoresin (or diazoresin sulfonate) with the natural polycations of chitosan, the synthesized magnetic Fe3O4 nanoparticles and the Ag nanoparticles (NPs). The irradiation of UV light promotes the conversion of the ionic bonds into the covalent ones between the...