The temperature dependence of the heat capacity of poly(phenylene-pyridyl) dendrons of the second and the third generations have been measured by the method of adiabatic vacuum and differential scanning calorimetry over the range from 6 K to (500-520) K in the present research. Phase transformations have been detected and their thermodynamic characteristics have been estimated and analysed in the above temperature range. The standard thermodynamic functions, namely, the heat capacity C-p(0)(T), enthalpy H degrees(T) - H degrees(0), entropy S degrees(T) - S degrees(0) and potential Phi(m)degrees, for the range from T -> 0K to (500-520) K and the standard entropy of formation of the dendrons in different physical states at T= 298.15 K have been calculated based on the experimental results. The thermodynamic characteristics of the samples under study and investigated earlier, poly(phenylene-pyridyl) dendrons decorated with dodecyl groups of the same generations have been compared and discussed. (C) 2016 Elsevier Ltd.