Synthesis and characterization of thermally crosslinked polyimide with second-order nonlinear optical chromophore  

作　　者：孟继本 麻洪 沈玉全 陈萍 李晓陆 李金亮 王永梅 

出　　处：《Science China Chemistry》1998年第4期395-402,共8页中国科学（化学英文版）

基　　金：theNational86 3HighTechnologyProgramandtheNationalNaturalScienceFoundationofChina;theStateKeyLaboratoryofFunctionalPolymerMaterialsforAdsorption;SeparationinNakaiUniversity (GrantNo .2 95 72 0 5 4 )

摘　　要：Synthesis of three novel crosslinked polyimides with push-pull azobenzene group has been developed. 4-Nitre4′-[N, N-bis (2-aminoethyl)]aminoazobenzene was first prepared, then poly(amic acid) prepolymer, one crosslinkable component, was obtained by aminolysis of alternating styrene-maleic anhydride copolymer, alternating thiophene-maleic anhydride copolymer or alternating benzofuran-maleic anhydride copolymer with it, and at last the crosslinked second-order nonlinear optical polyimide was synthesized by crosslinking and imidizing poly (amic acid) prepolymer with corresponding alternating copolymer. The crosslinking and imidizing processes were studied by IR and UV-Vis spectra. The chromophore density in one of the crosslinkable components, poly(amic acid) prepolymer, and the thermal stability of crosslinked polyimide thin film were measured by UV-Vis spectra.Synthesis of three novel crosslinked polyimides with push pull azobenzene group has been developed. 4 Nitro 4′ [N,N bis(2 aminoethyl)]aminoazobenzene was first prepared, then poly(amic acid) prepolymer, one crosslinkable component, was obtained by aminolysis of alternating styrene maleic anhydride copolymer, alternating thiophene maleic anhydride copolymer or alternating benzofuran maleic anhydride copolymer with it, and at last the crosslinked second order nonlinear optical polyimide was synthesized by crosslinking and imidizing poly(amic acid) prepolymer with corresponding alternating copolymer. The crosslinking and imidizing processes were studied by IR and UV Vis spectra. The chromophore density in one of the crosslinkable components, poly(amic acid) prepolymer, and the thermal stability of crosslinked polyimide thin film were measured by UV Vis spectra.

关 键 词：CROSSLINKED POLYIMIDE AZOBENZENE ALTERNATING COPOLYMER second order nonlinear optical material. 

分 类 号：TQ323[化学工程—合成树脂塑料工业]