Charge propagation on branching off conjugated polymers

The propagation of charged solitons in a branching off conjugated polymer i s studied. The soliton dynamics is numerically calculated using a 2-D exten sion of the Su-Schrieffer-Heeger Hamiltonian. We found that the propagation of a soliton through the bifurcation sites depends on the single-double bo nd configuration around these sites as well as the length of each branch. I t is found that the soliton can he trapped, go through, or he reflected at the bifurcations. The implications for the setting up of molecular circuits are determined.