  We present a theoretical description of resonant charge transfer in
collisions of nano-particles, specifically for $C_{60} + C_{60}^+$ collisions.
We predict that transient bonds between colliding fullerenes can significantly
extend the interaction time, allowing for a greater probability of charge
transfer. In our model, the dumbbell-shaped $(C_{60}-C_{60})^+$ quasi-molecule,
that is temporarily formed during the collision, is described as a dynamic
system of 120 zero-range potentials. Using this model, we calculate the
exchange interaction between colliding fullerenes and subsequently determine
the corresponding charge transfer cross sections at different collision
velocities. Our results have been verified with data obtained from quantum
molecular dynamics simulations of the fullerene collisions. The presented
theoretical model provides a description of the experimental data on the
$C_{60} + C_{60}^+ $ resonant charge transfer collision through the inclusion
of the temporary formation of dumbbell-shaped fullerene molecules at low
collision velocities.
