Single-Molecule Conductance of Neutral Closed-Shell and Open-Shell Diradical Indenofluorenes
Organic diradicals are highly promising candidates as future components in molecular electronic and spintronic devices because of their low spin-orbit coupling. To advance toward final circuit realizations, a thorough knowledge of the behavior of diradicals within a single-molecule junction framework is imperative. In this work, we have measured for the first time the single-molecule conductance of a neutral open-shell diradical compound, a [2,1-<i>b</i>] isomer of indenofluorene (IF). Our results reveal that the conductance of the [2,1-<i>b</i>] isomer is about 1 order of magnitude higher than that of the corresponding closed-shell regioisomer [1,2-<i>b</i>] IF. This is significant, as it fundamentally demonstrates the possibility of forming stable single-molecule junctions using neutral diradical compounds which are also highly conducting. This opens up a new approach to the development of externally addressable spintronic devices operable at room temperature.
Authors
- Juan M. Cuerva (ORCID: https://orcid.org/0000-0001-6896-9617)
- Raquel Casares (ORCID: https://orcid.org/0000-0002-3148-8112)
- Sandra Rodríguez‐González (ORCID: https://orcid.org/0000-0001-6563-7852)
- Álvaro Martínez-Pinel (ORCID: https://orcid.org/0000-0001-6037-5347)
- Edmund Leary (ORCID: https://orcid.org/0000-0001-7541-5997)
- Cristina Dı́az (ORCID: https://orcid.org/0000-0002-9318-5846)
- Irene R. Márquez (ORCID: https://orcid.org/0000-0001-9907-8040)
- Alba Millán (ORCID: https://orcid.org/0000-0003-2754-270X)
- M. Teresa González (ORCID: https://orcid.org/0000-0002-7253-797X)
- Fernando Martı́n (ORCID: https://orcid.org/0000-0002-7529-925X)
Institutions
- Madrid Institute for Advanced Studies (ES)
- Universidad Complutense de Madrid (ES)
- Universidad de Granada (ES)
- Rede de Química e Tecnologia (PT)
- Instituto de Información Científica y Tecnológica (CU)
- Universidad Autónoma de Madrid (ES)
Publication Details
- Journal
- Journal of the American Chemical Society
- Published
- 2024-10-18
- DOI
- https://doi.org/10.1021/jacs.4c13551
- Citations
- 16
- Primary Topic
- Molecular Junctions and Nanostructures
- Type
- article
- Field-Weighted Citation Impact
- 3.34
Funders
- Comunidad de Madrid
- Ministerio de Ciencia, Innovación y Universidades
- Ministerio de Economía y Competitividad
- Consejería de Conocimiento, Investigación y Universidad, Junta de Andalucía
- European Regional Development Fund
- Agencia Estatal de Investigación
- European Social Fund