The Phenolic Diazoresin Complex And Self-assembled Ultrathin Films Preparation And Applications

This thesis focuses on the photosensitive complexes from diazo resin (DR) and phenolic resin (PR) and layer-by-layer self-assembly multilayer films based on DR. The major conclusions are as follows:(1) Phenolic resin (PR) in alkali aqueous solution can be regarded as anionic polyelectrolyte and forms complex with diazo resin (DR). The coupling reaction between PR and DR is suppressed successfully by addition of H2SO4 together with DR. Under UV irradiation, the PR-DR complex changes its crosslinking nature from ionic to covalent and becomes insoluble in DMF.(2) In the presence of sodium dodecyl sulfate (SDS), PR remains soluble in water when its solution is neutralized. The PR-SDS-DR ternary complex was prepared by adding DR to the PR-SDS solution. The resulting complex is soluble in polar organic solvents and photosensitive. Under UV irradiation or heating the ionic bond of the complex converts to covalent bonds.(3) In aqueous solution p-sulfonatocalix[n]arene (SCnA) and diphenylamine -4-diazonium chloride (DS) forms inclusion complexes. The inclusion of DS in the cavity of SCnA leads to 1H NMR chemical shifts of DS moving towards higher magnetic field. The complexation of SCnA also results in a bathochromic shift and a decrease in optic intensity of the absorption spectrum of DS. In the presence of SC4A, the thermal stability of DS in aqueous solution increases significantly while its photosensitivity still remains high.(4) Rhodamine B (RB) and SCnA can also form host-guest-type complexes and RB's fluorescence is quenched by SCnA. The association constants for the RB/SCnA complexes increase in the order of SC4A