Tuning Charge Transport in Aromatic-Ring Single-Molecule Junctions via Ionic-Liquid Gating.
Angew Chem Int Ed Engl
; 57(43): 14026-14031, 2018 Oct 22.
Article
em En
| MEDLINE
| ID: mdl-30215882
ABSTRACT
Achieving gate control with atomic precision, which is crucial to the transistor performance on the smallest scale, remains a challenge. Herein we report a new class of aromatic-ring molecular nanotransistors based on graphene-molecule-graphene single-molecule junctions by using an ionic-liquid gate. Experimental phenomena and theoretical calculations confirm that this ionic-liquid gate can effectively modulate the alignment between molecular frontier orbitals and the Fermi energy level of graphene electrodes, thus tuning the charge-transport properties of the junctions. In addition, with a small gate voltage (|VG |≤1.5â
V) ambipolar charge transport in electrochemically inactive molecular systems (EG >3.5â
eV) is realized. These results offer a useful way to build high-performance single-molecule transistors, thus promoting the prospects for molecularly engineered electronic devices.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2018
Tipo de documento:
Article