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Thermally stable, solution processable and redox active new poly(amide-imide)s: synthesis and characterization

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A series of new poly(amide-imide)s was prepared by polycondensation of our already reported diamine, N,N’-[((propane-2,2-diylbis(4,1-phenylene) bis(oxy))bis(4,1-phenylene)]bis(4-aminobenzamide) (BDM) containing flexible ether and amide linkages with different aromatic dianhydrides via simple two-step method. The synthesized poly(amide-imide)s were characterized by FTIR spectroscopy and elemental analysis. These poly(amide-imide)s demonstrated nice solubility in most of the organic solvents at ambient temperature and upon heating. They also revealed great thermal stability and showed glass transition temperatures (Tgs) exceeding 150 °C in addition to the temperature of 10% weight loss (T10) that fluctuated from 460 to 522 °C having more than 59% residual yield at 800 °C in nitrogen atmosphere indicating their flame retardant characteristics. Furthermore, they also showed interesting photoluminescent properties with blue green solution emission properties, redox activity, and lower onset oxidation potentials with appreciably shallow HOMO levels.

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Acknowledgements

The authors greatly appreciate the support of this research by the Higher Education Commission of Pakistan under IRSIP program and the national research program for universities research project (20-3821/NRPU/R&D/HEC/14).

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Correspondence to Humaira Masood Siddiqi.

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Khan, M.I., Iqbal, A., Siddiqi, H.M. et al. Thermally stable, solution processable and redox active new poly(amide-imide)s: synthesis and characterization. Chem. Pap. 75, 3711–3721 (2021). https://doi.org/10.1007/s11696-020-01494-7

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  • DOI: https://doi.org/10.1007/s11696-020-01494-7

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