Systematic experimental study of quantum interference effects in anthraquinoid molecular wires
In order to translate molecular properties in molecular-electronic devices, it is necessary to create design principles that can be used to achieve better structure-function control oriented toward device fabrication. In molecular tunneling junctions, cross-conjugation tends to give rise to destruct...
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| Main Authors: | , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
07 February 2019
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| In: |
Nanoscale advances
Year: 2019, Volume: 1, Issue: 5, Pages: 2018-2028 |
| ISSN: | 2516-0230 |
| DOI: | 10.1039/C8NA00223A |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1039/C8NA00223A Verlag, lizenzpflichtig, Volltext: https://pubs.rsc.org/en/content/articlelanding/2019/na/c8na00223a 
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| Author Notes: | Marco Carlotti, Saurabh Soni, Xinkai Qiu, Eric Sauter, Michael Zharnikov, Ryan C. Chiechi |
| Summary: | In order to translate molecular properties in molecular-electronic devices, it is necessary to create design principles that can be used to achieve better structure-function control oriented toward device fabrication. In molecular tunneling junctions, cross-conjugation tends to give rise to destructive quantum interference effects that can be tuned by changing the electronic properties of the molecules. We performed a systematic study of the tunneling charge-transport properties of a series of compounds characterized by an identical cross-conjugated anthraquinoid molecular skeleton but bearing different substituents at the 9 and 10 positions that affect the energies and localization of their frontier orbitals. We compared the experimental results across three different experimental platforms in both single-molecule and large-area junctions and found a general agreement. Combined with theoretical models, these results separate the intrinsic properties of the molecules from platform-specific effects. This work is a step towards explicit synthetic control over tunneling charge transport targeted at specific functionality in (proto-)devices. |
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| Item Description: | Gesehen am 14.04.2020 |
| Physical Description: | Online Resource |
| ISSN: | 2516-0230 |
| DOI: | 10.1039/C8NA00223A |