We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Three-State Single-Molecule Naphthalenediimide Switch: Integration of a Pendant Redox Unit for Conductance Tuning.
- Authors
Li, Yonghai; Baghernejad, Masoud; Qusiy, Al ‐ Galiby; Zsolt Manrique, David; Zhang, Guanxin; Hamill, Joseph; Fu, Yongchun; Broekmann, Peter; Hong, Wenjing; Wandlowski, Thomas; Zhang, Deqing; Lambert, Colin
- Abstract
We studied charge transport through core-substituted naphthalenediimide (NDI) single-molecule junctions using the electrochemical STM-based break-junction technique in combination with DFT calculations. Conductance switching among three well-defined states was demonstrated by electrochemically controlling the redox state of the pendent diimide unit of the molecule in an ionic liquid. The electrical conductances of the dianion and neutral states differ by more than one order of magnitude. The potential-dependence of the charge-transport characteristics of the NDI molecules was confirmed by DFT calculations, which account for electrochemical double-layer effects on the conductance of the NDI junctions. This study suggests that integration of a pendant redox unit with strong coupling to a molecular backbone enables the tuning of charge transport through single-molecule devices by controlling their redox states.
- Subjects
OXIDATION-reduction reaction; SUBSTITUTION reactions; ELECTRIC admittance; MOLECULAR electronics; BIOMOLECULAR electronics
- Publication
Angewandte Chemie, 2015, Vol 127, Issue 46, p13790
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201506458