In bispyrazolopyridine derivatives dispersed into polystyrene, transient currents have been studied using a conventional time-of-flight method. A field dependent electron drift mobility, in the range of 4x10(-7) -2x10(-5) cm(2) /(V s) at an electric field of (0.6-7.0)x10(5) V/cm, has been found. The correlation between chemical structure and measured mobility is found to fit the correlated disorder model reasonably when the charge transport is represented in terms of the one-electron transfer between frontier molecular orbitals. Optimisation of molecule configuration and calculation of the orbital energy and wave-function decay constant have been computed by the semi-empirical methods. The PM3 approach is shown to approximate experimental data more better than the AM1.