Synthesis and molecular parameters of oligoarylenecarboranes

The specific features of the synthesis of oligophenylene-, oligonaphthylene-, and oligoanthrylenecarboranes [Ar-(HCB 10 H 9 CH) x -HCB 10 H 8 CH] n (x= 0,1) were studied. Molecular mass and viscosity of each oligoarylenecarborane were determined and the weight fraction and mole fraction distributions were analyzed using GPC. Fractional extraction was used to isolate eight fractions of oligophenylenecarborane and it was shown that they were described by the Mark-Kuhn-Houwink equation with an exponent of 0.59. For the free internal rotation model, the Kuhn segment was evaluated using the Monte-Carlo computational procedure