Synthesis and Characterization of Phthalonitrile-Capped Phthalimido Anhydrides |
| |
| Authors: | Alka D Gupta Devendra Kumar |
| |
| Institution: | 1. Department of Chemical Engineering , Indian Institute of Technology , New Delhi, 110016, India;2. Centre for Material Science and Technology , Indian Institute of Technology , Hauz Khas, New Delhi, 110016, India;3. Polymeric Materials Division , Langley Research Center , NASA, Hampton, Virginia, 23666 |
| |
| Abstract: | The condensation in an aprotic solvent of 4-aminophthalonitrile with hexafluoroisopropylidenediphthalic anhydride (6FA), 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BPTDA), 1,2,4,5-benzenetetracarboxylic dianhydride (PMDA), and bisester anhydride (BEA), respectively, gave the corresponding phthalamic acids. These phthalmic acids were thermally cyclodehydrated to give phthalonitrile-capped phthalimido anhydrides. Elemental analysis, differential thermal analysis (DSC), Fourier-transform infrared (FTIR), and nuclear magnetic resonance (1H NMR) studies were used to characterize these anhydrides. The mass spectra of these compounds suggest a mechanism for their fragmentation. |
| |
| Keywords: | Nonconjugated conductive polymer Polyalloocimene Dopant Radical cation |
|
|
