Tuning of Organic Reversible Switching via Self-Assembled Supramolecular Structures



Single-layer devices based on Rose Bengal show large conductance switching between the on and off states (on/off ratio = 104) in the pristine form. Rose Bengal molecules have been incorporated into different water soluble “host” polymer-based supramolecular matrices by layer-by-layer electrostatic self-assembly. Different ionic groups in the supramolecular structures tune the leakage current and the on/off ratio by several orders of magnitude. The switching devices may be used in random-access and read-only memory applications.