A series of fluorinated polyphosphazenes [Me(Ph)PN](x){[RR’C(OH)CH2](Ph)PN]}(gamma) (3, R = C6H5, R’ = CF3; 4, R = R’= CF3; 5, R = C6H4CF3, R’ = H; 6, R = C6H5, R’ = CF2CF3; 7, R = C6F5, R’= CH3; and 8, R = C8F5, R’ = H) were prepared by deprotonation of,a portion of the methyl groups in [Me(Ph)PN](n) (1), with n-BuLi, followed by treatment with fluorinated aldehydes and ketones, RR’C-(=O). The range of substitution {i.e., [gamma/(x+gamma)](100%)} was between 5% and 500/0 as determined by elemental analysis, Partially fluorinated polymer 10 was prepared by replacing the OH group in the related, non-fluorinated polymer, [Me(Ph)PN](x){[Me(2)C(OH)CH2](Ph)PN}(gamma) (9), with fluorine using (diethy-lamino) sulfur trifluoride. The new polymers were characterized by H-1,C-13, and P-31 NMR spectroscopy, IR spectroscopy, elemental analyses, and gel permeation chromatography. The glass transition temperatures as determined by differential scanning calorimetry ranged from 38 to 94 degrees C. Aqueous contact angle measurements (77-92 degrees) indicated that the surfaces of the new polymers were more hydrophobic than that of the parent polymer, 1.