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Biomolecular Electronic Devices Based on Self‐Organized Deoxyguanosine Nanocrystals
Author(s) -
RINALDI ROSS,
BRANCA EMANUELA,
CINGOLANI ROBERTO,
FELICE ROSA,
CALZOLARI ARRIGO,
MOLINARI ELISA,
MASIERO SALVATORE,
SPADA GIANPIERO,
GOTTARELLI GIOVANNI,
GARBESI ANNA
Publication year - 2002
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2002.tb03033.x
Subject(s) - deoxyguanosine , guanosine , tetrathiafulvalene , self assembly , dipole , nanocrystal , hysteresis , nanotechnology , molecule , materials science , chemistry , chemical physics , dna , condensed matter physics , organic chemistry , physics , biochemistry
A bstract : 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.