Two 2,4-diamino-6-biphenyl-4-yl-1,3,5-triazines carrying either one semiperfluorinated or two lipophilic alkoxy chains at the terminal position of the biphenyl moiety have been investigated in binary mixtures with two-chain and three-chain partially fluorinated benzoic acids by means of polarizing microscopy, differential scanning calorimetry, and X-ray diffraction. Equimolar compositions of the triazines with the complementary two-chain benzoic