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Environmental Control of Single‐Molecule Junction Evolution and Conductance: A Case Study of Expanded Pyridinium Wiring
- Source :
- Angewandte Chemie (International Ed. in English), Angewandte Chemie International Edition, Angewandte Chemie International Edition, Wiley-VCH Verlag, 2021, 60 (9), pp.4732-4739. ⟨10.1002/anie.202013882⟩
- Publication Year :
- 2021
- Publisher :
- Wiley, 2021.
-
Abstract
- Environmental control of single‐molecule junction evolution and conductance was demonstrated for expanded pyridinium molecules by scanning tunneling microscopy break junction method and interpreted by quantum transport calculations including solvent molecules explicitly. Fully extended and highly conducting molecular junctions prevail in water environment as opposed to short and less conducting junctions formed in non‐solvating mesitylene. A theoretical approach correctly models single‐molecule conductance values considering the experimental junction length. Most pronounced difference in the molecular junction formation and conductance was identified for a molecule with the highest stabilization energy on the gold substrate confirming the importance of molecule–electrode interactions. Presented concept of tuning conductance through molecule–electrode interactions in the solvent‐driven junctions can be used in the development of new molecular electronic devices.<br />Single‐molecule junction conductance can be efficiently tuned by solvent environment. A series of expanded pyridinium molecular wires gave higher conductance with fully extended junction geometries in solvating water environment as opposed to mesitylene solvent. Environmental control efficiently operates the molecule–electrode interactions.
- Subjects :
- expanded pyridiniums
Materials science
02 engineering and technology
Substrate (electronics)
010402 general chemistry
01 natural sciences
Catalysis
law.invention
chemistry.chemical_compound
law
Water environment
[CHIM]Chemical Sciences
Molecule
ComputingMilieux_MISCELLANEOUS
Research Articles
010405 organic chemistry
Conductance
Molecular electronics
General Medicine
General Chemistry
021001 nanoscience & nanotechnology
solvent gating
0104 chemical sciences
chemistry
Chemical physics
single-molecule conductance
scanning tunneling microscopy
Pyridinium
Molecular Electronics
Scanning tunneling microscope
0210 nano-technology
Break junction
Research Article
Subjects
Details
- ISSN :
- 15213773 and 14337851
- Volume :
- 60
- Database :
- OpenAIRE
- Journal :
- Angewandte Chemie International Edition
- Accession number :
- edsair.doi.dedup.....1a236fcc9d8cfd0de9a1136be669a03d