A novel poly(aryl ether) was prepared by nucleophilic displacement of the fluorine atoms of a 2-perfluoro-activated bisfluoro monomer with bisphenol A. The polymer exhibited a weight average molar mass of 3.15 X 10(5) g mol(-1) according to gel permeation chromatography. The poly(aryl ether) showed very good thermal stability, with only a 5% weight loss at 493 degreesC according to thermogravimetric analysis under synthetic air, and it had a glass-transition temperature at 223 degreesC according to differential scanning calorimetry and at 243 degreesC according to dynamic mechanical thermal analysis. The polymer was soluble in a wide range of organic solvents, including CHCl3, tetrahydrofuran, NMP, dimethylformamide (DMF), and toluene, and was insoluble in dimethyl sulfoxide and acetone. Transparent thin films of the polymer, cast from DMF, exhibited a tensile strength of 65 MPa, a modulus of 2.62 GPa, and an elongation at break of 130%.