Preparation And Photoelectric Properties Of Polyphosphazenes Derivatives

Polyphosphazene derivatives has been good used in electroluminescentmaterials, photorefractive materials and terahertz materials, has broad applicationin the field of nonlinear optical materials. New polyphosphazene derivativesnonlinear optical materials has been one of the research hotspots. And1,8-naphthalimide derivatives has intense fluorescence. Based on above reason, ifpolyphosphazene contained1,8-naphthalimide can be prepared by grafting reacti-on, and1,8-naphthalimide grafted polyphosphazene contained azo chromophorescan be prepared by coupling reaction, the investigation will have great signnifi-cance on new nonlinear optical materials.The investigation on synthesis process of polyphosphazene contained1,8-naphthaleneimide, and coupling technics of1,8-naphthalimide grafted polyphos-phazene contained azo p-nitroaniline chromophores and1,8-naphthalimide graft-ed polyphosphazene contained azo2,4-dinitroaniline chromophores by microw-ave irradiation had been finished, based on the successfully preparation of4-ethoxy-N-hydroxyethyl-1,8-naphthalimide and polyphosphazene. And the produ-ct structure had been characterized, fluorescence and electro-optic coefficient hadbeen tested and analysised.4-ethoxy-N-hydroxyethyl-1,8-naphthalimide was prepared by4-Br-N-hydroxyethyl-1,8-naphthalimide reacted with ethanol sodium that changed fromethanol and KOH,4-Br-N-hydroxyethyl-1,8-naphthalimide was prepared by4-Br-1,8-naphthalene anhydride reacted with ethanolamine, the yield of4-ethoxy-N-hydroxyethyl-1,8-naphthalimide was89.6%. Polydichlorophosphazene wasprepared8h at250℃and0.06g AlCl3as catalyst, the yield was56.9%. Polyp-hosphazene contained1,8-naphthalimide was prepared if1,8-naphthalimidealcohol sodium salt was added to polydichlorophosphazene at40℃and reacted for48h, the yield of polyphosphazene contained1,8-naphthalimide was44.1%,the grafting percent was14.3%. If the tempureture was25℃, the radiated powerwas400W, and the reaction time was10min,1,8-naphthalimide grafted polyp-hosphazene contained azo p-nitroaniline chromophores and1,8-naphthalimidegrafted polyphosphazene contained azo2,4-dinitroaniline chromophores could beprepared, the yield of1,8-naphthalimide grafted polyphosphazene contained azop-nitroaniline chromophores was36.3%, the grafting percent was10.4%, and theyield of1,8-naphthalimide grafted polyphosphazene contained azo2,4-dinitroa-niline chromophores was43.2%, the grafting percent was10.9%.The product structure was characterized by infrared spectroscopy (IR),ultraviolet-visible spectroscopy (UV-vis), elemental analysis. The fluorescenceof1,8-naphthalimide, polyphosphazene contained1,8-naphthalimide,1,8-naphth-alimide grafted polyphosphazene contained azo p-nitroaniline chromophores, and1,8-naphthalimide grafted polyphosphazene contained azo2,4-dinitroanilinechromophores were tested and analysised, results showed that all of product havefluorescence, and their fluorescence spectral range was where blue is. Specifica-lly there were three excitation and emission spectras of1,8-naphthalimide graftedpolyphosphazene contained azo p-nitroaniline chromophores, one of the emissionspectrum was a faint green light. The electro-optic coefficient of nonlinearoptical materials1,8-naphthalimide grafted polyphosphazene contained azochromoph-ores were tested, the result showed that1,8-naphthalimide graftedpolyphosph-azene contained azo2,4-dinitroaniline chromophores (2.95pm/V)was higher than1,8-naphthalimide grafted polyphosphazene contained azo p-nitroaniline chromophores (1.57pm/V).