Bistable Switching of π‐Conjugation in a Dithienylethene‐Bridged Luminescent Trityl Diradicaloid
Robust external manipulation of spin communication in molecular frameworks is desirable for potential applications in quantum information science. Herein, we incorporate two types of dithienylethene (DTE) units into tris(2,4,6-trichlorophenyl)methyl (TTM)-based diradicaloids and report on the successful bistable switching of the optical and magnetic properties of the molecule. Visible-light irradiation of the open form generates up to 97% of the closed form, in which conjugation between the two radical centers leads to absorption over the entire visible range of the spectrum as well as a twofold increase of the singlet-triplet gap. These results establish TTM/DTE hybrids as persistent and multi-level responsive diradicaloids.
Authors
- Robert Göstl (ORCID: https://orcid.org/0000-0002-7483-6236)
- Alexander J. C. Kuehne (ORCID: https://orcid.org/0000-0003-0142-8001)
- Dirk M. Guldi (ORCID: https://orcid.org/0000-0002-3960-1765)
- Siyang He (ORCID: https://orcid.org/0000-0003-0196-8999)
- Sören Schlittenhardt (ORCID: https://orcid.org/0000-0002-9294-0272)
- Max von Delius (ORCID: https://orcid.org/0000-0003-1852-2969)
- Vivek Chandrakant Wakchaure (ORCID: https://orcid.org/0000-0003-1147-1564)
- Xingmao Chang (ORCID: https://orcid.org/0000-0002-0784-3495)
- Dinar Abdullin (ORCID: https://orcid.org/0000-0003-1500-3629)
- Sabine Richert (ORCID: https://orcid.org/0000-0002-2990-974X)
- Julia Zolg (ORCID: https://orcid.org/0009-0008-7915-223X)
- Maximilian Herm
Institutions
- Goethe University Frankfurt (DE)
- Indian Institute of Technology Jodhpur (IN)
- University of Wuppertal (DE)
- Friedrich-Alexander-Universität Erlangen-Nürnberg (DE)
- Universität Ulm (DE)
- International Council on Mining and Metals (GB)
- DWI – Leibniz Institute for Interactive Materials (DE)
- Center for Integrated Quantum Science and Technology (DE)
- RWTH Aachen University (DE)
Publication Details
- Journal
- Angewandte Chemie International Edition
- Published
- 2026-09-04
- DOI
- https://doi.org/10.1002/anie.5705848
- Primary Topic
- Synthesis and Properties of Aromatic Compounds
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Alexander von Humboldt-Stiftung
- Deutsche Forschungsgemeinschaft
- Universität Ulm
- Center for Integrated Quantum Science and Technology