A novel diamine 2H (4 aminophenyl) 4 (3 phenyl 4 aminophenoxy) 2,3 phthalazin 1 one(1) containing N—C coupling bond was synthesized and reacted with four aryl diimide dicarboxylic acids to prepare a series of new aro...A novel diamine 2H (4 aminophenyl) 4 (3 phenyl 4 aminophenoxy) 2,3 phthalazin 1 one(1) containing N—C coupling bond was synthesized and reacted with four aryl diimide dicarboxylic acids to prepare a series of new aromatic poly(amide imide)s via direct polycondensation using Yamazaki phosphorylation procedure.The polymers obtained in high yield had high molecular weight with the inherent viscosity in the range of 0 50～0 70 dLg -1 .Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) indicated that the polymers had high glass transition temperature of 317～343℃ and good thermostability with 10% weight loss temperature above 440℃.They were readily soluble in polar solvents such as NMP、DMF and m cresol etc and clear,tough,flexible films can be cast from their DMAc solutions.The structure of monomer and their polymers was characterized by MS、FT IR and 1H NMR and they are consistant with the proposed structure.X ray diffraction showed that all poly(amide imide)s were amorphous.展开更多
This account gives an overview of our recent work in the area of conjugated azomethines derived from 2-aminothiophenes.It will be presented that mild reaction conditions can be used to selectively prepare symmetric an...This account gives an overview of our recent work in the area of conjugated azomethines derived from 2-aminothiophenes.It will be presented that mild reaction conditions can be used to selectively prepare symmetric and unsymmetric conjugated azomethines.It further will be demonstrated that azomethines consisting of various 5-membered aryl heterocycles lead to chemically,reductively,hydrolytically,and oxidatively robust compounds.The optical and electrochemical properties of these materials can be tuned contingent on the degree of conjugation,type of aryl heterocycle,and by including various electronic groups.The end result is materials having colors spanning 250 nm across the visible spectrum.These colors further can be tuned via electrochemical or chemical doping.The resulting doped states have high color contrasts from their corresponding neutral states.The collective opto-electronic properties and the means to readily tune them,make thiophenoazomethine derivatives interesting materials for potential use in a gamut of applications.展开更多
文摘A novel diamine 2H (4 aminophenyl) 4 (3 phenyl 4 aminophenoxy) 2,3 phthalazin 1 one(1) containing N—C coupling bond was synthesized and reacted with four aryl diimide dicarboxylic acids to prepare a series of new aromatic poly(amide imide)s via direct polycondensation using Yamazaki phosphorylation procedure.The polymers obtained in high yield had high molecular weight with the inherent viscosity in the range of 0 50～0 70 dLg -1 .Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) indicated that the polymers had high glass transition temperature of 317～343℃ and good thermostability with 10% weight loss temperature above 440℃.They were readily soluble in polar solvents such as NMP、DMF and m cresol etc and clear,tough,flexible films can be cast from their DMAc solutions.The structure of monomer and their polymers was characterized by MS、FT IR and 1H NMR and they are consistant with the proposed structure.X ray diffraction showed that all poly(amide imide)s were amorphous.
基金Financial support for the original publications was provided by NSERC Canada in the form of a Discovery Grant,Strategic Research Grants,Idea-to-Innovation and Research Tools and Instruments grants in additionto CFI for additional equipment funding
文摘This account gives an overview of our recent work in the area of conjugated azomethines derived from 2-aminothiophenes.It will be presented that mild reaction conditions can be used to selectively prepare symmetric and unsymmetric conjugated azomethines.It further will be demonstrated that azomethines consisting of various 5-membered aryl heterocycles lead to chemically,reductively,hydrolytically,and oxidatively robust compounds.The optical and electrochemical properties of these materials can be tuned contingent on the degree of conjugation,type of aryl heterocycle,and by including various electronic groups.The end result is materials having colors spanning 250 nm across the visible spectrum.These colors further can be tuned via electrochemical or chemical doping.The resulting doped states have high color contrasts from their corresponding neutral states.The collective opto-electronic properties and the means to readily tune them,make thiophenoazomethine derivatives interesting materials for potential use in a gamut of applications.
