Abstract
A series of new aromatic poly(amideimide)s is synthesized via one-step high- temperature polycondensation from prepared diamidedianhydrides and various diamines: 4,4'-(hexafluoro-isopropylidene)dianiline, 4,4'-(9-fluorenylidene)dianiline, 2,7-diaminofluorene and 2,4-diamino-6-phenyl-1,3,5-triazine. Molecular and structural characterization of the resulting polymers is carried out using Fourier transform infrared and nuclear magnetic resonance spectroscopies. The resulting polymers exhibit a good level of thermal stability. The temperature of 10% weight loss is in the range of 420—525 °C (in N2) associated with relatively high glass transition temperatures (249—299 °C). The polymers' residual weight loss at 800 °C is higher than 40%. The optical and photoluminescence characteristics of synthesized poly(amideimide)s were investigated in solution and in blend with poly(methylmethacrylate) (PMMA). The photoluminescence spectra of the polymers in N-methyl-2-pyrrolidinone solution exhibit maximum emission wavelength in the range of 405—495 nm depending upon the polymer structure.
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