Novel fluorescent porous hyperbranched aromatic polyamide containing 1,3,5-triphenylbenzene moieties: Synthesis and characterization

In this thesis, two novel porous hyperbranched poly(1,3,5-tris(4-carboxyphenyl) benzene p -phenylenediamine) amides with different terminal functional groups are synthesized through an A 2 + B 3 approach using 1,3,5-tri(4-carboxyl phenyl) benzene (H 3 BTB) and p -phenylenediamine as raw material, N -methyl-pyrrolidone as solvent, triphenyl phosphite and pyridine as dehydrating agent, by means of regulating the mole ratio of the monomers. The chemical structures of the prepared hyperbranched polymers are characterized by Fourier transform infrared spectroscopy and nuclear magnetic resonance ( 1 H-NMR and 13 C-NMR) analysis. These two polymers can be soluble in dimethyl sulfoxide (DMSO) and N , N -dimethyl formamide (DMF). Their DMSO solutions exhibit strong blue fluorescence, especially for the amino terminated polymer HP-NH 2 . While in DMF solution, the two polymers emit strong green fluorescence. These two polymers are porous polymers with the Brunauer−Emmett−Teller surface areas of 4.53 and 24.52 m 2 /g for HP-COOH and HP-NH 2 , respectively. They are potential useful in the areas of storage, separation, catalysis, and light emitting. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44505.