Summary
A novel dianhydride containing nathphalene units was prepared by Ullmann reaction of 4-bromo-1,8-nathphalic anhydride with trimethylenedipiperidine and polymerized with various aromatic diamines in one-pot polycondensation at high temperature in m-cresol. All the polyimides are soluble in organic solvents and form transparent yellow thin films by solution casting. Their inherent viscosities were ranged in 0.17 - 0.68 dL /g (in m-cresol at 25□). The glass transition temperatures were from 202.7□ to 263.6□ by DSC. These polymers did not show appreciable decomposition up to 380□ in N2 by TGA and can emit strong green fluorescence in solution and in solid state. They may be potential light emitting and solar energy conversion materials.
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Received: 26 September 2002/Revised version: 6 January 2003/ Accepted: 10 January 2003
Correspondence to Deyue Yan
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Huang, W., Yan, D. & Lu, Q. Synthesis and properties of polyimides from 1,3-bis(4-piperidino-l,S-naphthalic anhydride)propane. Polymer Bulletin 49, 417–423 (2003). https://doi.org/10.1007/s00289-003-0122-7
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DOI: https://doi.org/10.1007/s00289-003-0122-7