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New types of polyamides containing pendent triaryl pyridine groups were successfully synthesized by direct polycondensation of a symmetry diamine,(4-(4-(2,6-diphenylpyridin-4yl)phenoxy)phenyl)-3,5-diaminobezamide(DPDAB), and various aromatic and aliphatic dicarboxylic diacids in NMP using triphenyl phosphate(TPP) and pyridine as catalyst. The diamine and all the prepared polyamides were fully characterized by using FT-IR,~1H-NMR,UV-Vis spectroscopy, fluorimetry and elemental analysis.The inherent viscosity of polyamides ranged from 0.45 dL/g to 0.68 dL/g.All the polymers exhibited solubility in common polar aprotic solvents such as NMP,DMAc,DMF,DMSO,pyridine,HMPA,and even in less polar solvents such as THF and m-cresol at room temperature.Thermal properties of polyamides were evaluated by means of DSC,DMTA and TGA.These polymers showed glass transition temperatures(T_g) in the range of 138-210℃. Their initial decomposition temperature(T_i) varied from 265℃to 310℃under N_2.The dilute solution(0.2 g/dL) of polyamides in DMF exhibited fluorescence emission withλ_(max) in the range of 470-550 nm.
New types of polyamides containing pendent triaryl pyridine groups were synthesized synthesized by direct polycondensation of a symmetry diamine, (4- (2,6-diphenylpyridin-4yl) phenoxy) phenyl) -3,5-diaminobezamide The diamine and all the prepared polyamides were fully characterized by using FT-IR, ~ 1H-NMR, UV-Vis spectroscopy, fluorimetry and elemental analysis. The inherent viscosity of polyamides ranged from 0.45 dL / g to 0.68 dL / g. All the aromatic hydrocarbons such as NMP, DMAc, DMF, DMSO, pyridine, HMPA and even in less polar solvents such as THF and m-cresol at room temperature. Thermo-properties of polyamides were evaluated by means of DSC, DMTA and TGA. These graph showed glass transition temperatures (T_g) in the range of 138-210 ° C. Their initial decomposition temperature (T_i) varied from 265 ℃ to 310 ℃ under N_2.The dil ute solution (0.2 g / dL) of polyamides in DMF extracted fluorescence emission with λ max (max) in the range of 470-550 nm.