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Scaling of quantum interference from single molecules to molecular cages and their monolayers
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Xu, Xiaohui, Wang, Juejun, Blankevoort, Nickel, Daaoub, Abdalghani, Sangtarash, Sara, Shi, Jie, Fang, Chao, Yuan, Saisai, Chen, Lichuan, Liu, Junyang, Yang, Yang, Sadeghi, Hatef and Hong, Wenjing (2022) Scaling of quantum interference from single molecules to molecular cages and their monolayers. Proceedings of the National Academy of Sciences, 119 (46). e2211786119. doi:10.1073/pnas.2211786119 ISSN 0027-8424.
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Official URL: https://doi.org/10.1073/pnas.2211786119
Abstract
The discovery of quantum interference (QI) is widely considered as an important advance in molecular electronics since it provides unique opportunities for achieving single-molecule devices with unprecedented performance. Although some pioneering studies suggested the presence of spin qubit coherence and QI in collective systems such as thin films, it remains unclear whether the QI can be transferred step-by-step from single molecules to different length scales, which hinders the application of QI in fabricating active molecular devices. Here, we found that QI can be transferred from a single molecule to their assemblies. We synthesized and investigated the charge transport through the molecular cages using 1,3-dipyridylbenzene (DPB) as a ligand block with a destructive quantum interference (DQI) effect and 2,5-dipyridylfuran (DPF) as a control building block with a constructive quantum interference (CQI) effect using both single-molecule break junction and large area junction techniques. Combined experiments and calculations revealed that both DQI and CQI had been transferred from the ligand blocks to the molecular cages and the monolayer thin film of the cages. Our work introduced QI effects from a ligand to the molecular cage comprising 732 atoms and even their monolayers, suggesting that the quantum interference could be scaled up within the phase-coherent distance.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||
| SWORD Depositor: | Library Publications Router | ||||||
| Journal or Publication Title: | Proceedings of the National Academy of Sciences | ||||||
| Publisher: | National Academy of Sciences | ||||||
| ISSN: | 0027-8424 | ||||||
| Official Date: | 7 November 2022 | ||||||
| Dates: |
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| Volume: | 119 | ||||||
| Number: | 46 | ||||||
| Article Number: | e2211786119 | ||||||
| DOI: | 10.1073/pnas.2211786119 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
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