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 current-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 pi-pi interactions between guanosine molecules and to the formation of a strong dipole along ribbons, consistently with the results of our first-principles calculations.
Biomolecular electronic devices based on self-organized deoxyguanosine nanocrystals / Rinaldi, R; Branca, E; Cingolani, R; DI FELICE, Rosa; Calzolari, Arrigo; Molinari, Elisa; Masiero, S; Spada, G; Gottarelli, G; Garbesi, A.. - In: ANNALS OF THE NEW YORK ACADEMY OF SCIENCES. - ISSN 0077-8923. - STAMPA. - 960:(2002), pp. 184-192. [10.1111/j.1749-6632.2002.tb03033.x]
Biomolecular electronic devices based on self-organized deoxyguanosine nanocrystals
DI FELICE, ROSA;CALZOLARI, ARRIGO;MOLINARI, Elisa;
2002
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 current-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 pi-pi interactions between guanosine molecules and to the formation of a strong dipole along ribbons, consistently with the results of our first-principles calculations.Pubblicazioni consigliate
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