Optically induced and polarity driven electron transfer in mesoscopic multilayer systems

The authors present organic films that are prepared using a new technique from layers of polyelectrolytes, which have a high imprinted polarity gradient across the film thickness of 20 nm. These films could load with covalently bond pyrene molecules with a mean distance of 2 nm. Thus a high probability of overlapping wavefunctions of neighboring molecules should appear and we expect the electronic states to form a cascade that is bent by the polarity gradient.