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Synthesis and characterization of novel photoactive polyamide derived from substituted fluorene by copper (I) catalyst
Author(s) -
Ghaemy Mousa,
Barghamadi Mohammad
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30732
Subject(s) - polyamide , tetrahydrofuran , inherent viscosity , polymer chemistry , thermal stability , solubility , diamine , intrinsic viscosity , dimethylacetamide , chemistry , materials science , solvent , polymer , organic chemistry
A novel polyamide has been successfully prepared through the reaction of 2,7‐dibromo‐9,9‐dioctylfluorene with 2,5‐dipiperazinedione in the presence of CuI, N , N ′‐dimethylethylene diamine (DMEDA) and K 2 CO 3 as base mixture and as catalyst. The structures of the monomer and the resulting model compound, as well as the structure, solution viscosity, solubility, molecular weights, thermal behavior, thermal stability, and light absorption and emission spectra of the resulting polyamide were characterized by means of FTIR, elemental analysis, 1 H‐NMR, 13 C‐NMR, DSC, TGA, GPC and UV–visible absorption, and fluorescence emission spectrophotometers. The polyamide possesses excellent solubility in organic solvents such as tetrahydrofuran (THF), N ‐methyl‐2‐pyrrolidone (NMP), N , N ‐dimethylacetamide (DMAc), N , N ‐dimethylformamide (DMF), ethylacetate, acetone, ethanol, pyridine, chloroform, and toluene at room temperature. The polyamide had inherent viscosity of 0.65 dL/g, and molecular weights of M n = 4.25 × 10 4 and M w = 5.99 × 10 4 g/mol. The polyamide had glass transition temperature ( T g ) of 138°C, and 10% weight loss at 350°C in nitrogen. The polyamide showed strong UV absorption and blue emission in solution and in solid state. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009