Brominated fluorine-containing homopolycarbonates and copolycarbonates of varied unit ratio were synthesized from 3,3’,5,5’-tetrabromobisphenol AF and bisphenol A polycondensed with trichloromethyl chloroformate and a phase-transfer catalyst at 25 degrees C. All polycarbonates were examined with i.r. spectra, elemental analyses (EA), inherent viscosity, X-ray diffraction, solubility, contact angle, tensile stress, d.s.c. t.g.a. and LOI. Polycarbonates of moderate to large molar mass and inherent viscosities up to 0.77 dl g(-1) were obtained in high yields with tetra-n-butylammonium bromide as a catalyst, sodium hydroxide as a base and 1,2-dichloroethane as medium. The homopolycarbonate of greatest inherent viscosity reflects that bisphenol A, having an electron-releasing group, increases nucleophilic properties of the phenolate anion. The X-ray diffraction diagram showed that all polycarbonates were essentially semicrystalline. Almost all polycarbonates, except the homopolycarbonate based on bisphenol A, were soluble in acetone, NMP, DMF, THF, chloroform, pyridine, nitrobenzene and 1,1,2,2-tetrachloroethane at room temperature. The contact angles of the polycarbonates were found in the range 64-85 degrees. The wettabilities of polycarbonates increased with increasing mass fraction of bromine atoms. The tensile stress shows that the films become more pliable with increasing fluorine atom content. The homopolycarbonate based on tetrabromobisphenol AF has the highest T-g at 206 degrees C. The t.g.a. curves show that T-d(10%) of polycarbonates was in the range 446-477 degrees C in nitrogen. The LOI of homopolycarbonates based on bisphenol A and tetrabromobisphenol AF were found at 25.5 and 93, respectively. The results show that homopolycarbonate and copolycarbonates containing tetrabromobisphenol AF have great thermal stability and flame retardancy.