Biomolecular Electronic Devices Based on Self‐Organized Deoxyguanosine Nanocrystals

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Abstract
Abstract: We report on a new class of hybrid electronic devices based on a DNA nucleoside (deoxyguanosine lipophilic derivative) whose assembled polymeric ribbons interconnect a submicron metallic gate. The device exhibits large conductivity at room temperature, rectifying behavior and strong curent‐voltage hysteresis. The transport mechanism through the molecules is investigated by comparing films with different self‐assembling morphology. We found that the main transport mechanism is connected to π‐π interactions between guanosine molecules and to the formation of a strong dipole along ribbons, consistently with the results of our first‐principles calculations.