This paper describes partially fluorinated poly- p -xylylenes prepared by CVD polymerization. The synthesis, characterization, and surface modification of two partially fluorinated polymer coatings, namely poly(4,12-dibromo-1,1,9,9-tetrafluoro- p -xylylene) ( 2 ) and poly(4-heptadecafluorononanoyl- p -xylylene-co- p -xylylene) ( 4 ), is described. Polymer 2 is synthesized from 4,12-dibromo-1,1,9,9-tetrafluoro[2.2]paracyclophane ( 1 ), which is fluorinated at the aliphatic bridge, while 4-heptadecafluorononanoyl[2.2]paracyclophane ( 3 ), which contains a perfluorinated keto group at the aromatic ring, is used to synthesize polymer 4 . Furthermore, the keto-functionalized polymer 4 introduces both extreme hydrophobicity and surface reactivity towards hydrazide-containing ligands
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