Close-Shell and Biradical Enantiomers for Probing the Chiral-Induced Spin Selectivity Effect
Two pairs of enantiomers were designed, synthesized, and characterized. They differ by the absence or presence of two unpaired electrons, enabling us to probe the role that close- versus open-shell electronic structures play on chiroptical properties and the chiral-induced spin selectivity (CISS) effect. The enantiomers showed comparable high purity and an enantiomeric excess of >99%, enabling accurate physical studies. Specifically, circular dichroism in solution and gold-coated thin films and the chiral-induced anomalous Hall effect were measured and discussed in the light of the molecular structure. The biradical enantiomers showed a magnified CISS effect in spectroscopic and electric measurements versus that of the close-shell enantiomers.
Authors
- Lucia Maini (ORCID: https://orcid.org/0000-0002-0703-2617)
- Christos Gatsios (ORCID: https://orcid.org/0009-0003-9491-542X)
- Mathieu Surin (ORCID: https://orcid.org/0000-0001-8950-3437)
- Gaël De Leener (ORCID: https://orcid.org/0000-0001-9428-9324)
- Michel Luhmer (ORCID: https://orcid.org/0000-0002-4089-6644)
- Priya Pandey (ORCID: https://orcid.org/0000-0002-0997-1001)
- Shira Yochelis (ORCID: https://orcid.org/0000-0001-9180-4669)
- Yossi Paltiel (ORCID: https://orcid.org/0000-0002-8739-9952)
- Yves Henri Geerts (ORCID: https://orcid.org/0000-0002-2660-5767)
- David Dellemme (ORCID: https://orcid.org/0000-0003-2600-6155)
- Norbert Koch (ORCID: https://orcid.org/0000-0002-6042-6447)
- Anmol Andotra
- Oleg Kuliashov
- Alexandre Mamontov
- Daniel Goldberg (ORCID: https://orcid.org/0009-0006-8664-246X)
Institutions
- Hebrew College (US)
- University of Mons (BE)
- Université Libre de Bruxelles (BE)
- Center for NanoScience (DE)
- Humboldt-Universität zu Berlin (DE)
- Centre de Nanosciences et de Nanotechnologies (FR)
- Walloon Excellence in Lifesciences and Biotechnology (BE)
- International Solvay Institutes (BE)
- Institut für Technische und Angewandte Physik (Germany) (DE)
- University of Bologna (IT)
Publication Details
- Journal
- The Journal of Physical Chemistry Letters
- Published
- 2026-05-12
- DOI
- https://doi.org/10.1021/acs.jpclett.6c00717
- Primary Topic
- Advanced NMR Techniques and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- United States-Israel Binational Science Foundation
- Fonds De La Recherche Scientifique - FNRS
- Israel Science Foundation
- Innoviris
- Université Libre de Bruxelles
- HORIZON EUROPE Marie Sklodowska-Curie Actions