Universität zu Köln

Miyamura, Takuma ORCID: 0009-0004-7134-924X, Schlecht, Joël ORCID: 0009-0000-2187-7985 and Dumele, Oliver ORCID: 0000-0002-3277-6570 (2025). Organic Spin‐State Photoswitches. Angewandte Chemie International Edition, 64 (38). pp. 1-15. Wiley. ISSN 1433-7851

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Abstract

[Artikel-Nr. e202512691] Organic spin-state photoswitches represent an emerging class of molecular systems capable of reversibly modulating electronic spin states using light. This review provides a comprehensive overview of the fundamental mechanisms underlying two principal switching modes: photoconformational and photochemical. Emphasis is placed on their structural design, magnetic behavior, and the methods used for their characterization, including electron paramagnetic resonance (EPR) and UV–vis spectroscopy. Selected examples illustrate the ability of these systems to control spin-polarized states, alter mag- netic exchange interactions, or switch between singlet and triplet spin states upon photoirradiation. The review also discusses challenges related to thermal stability, bistabil- ity, and operation under ambient conditions. Emerging strategies for integrating photoswitches with persistent radicals or redox-active units are highlighted for their potential in molecular electronics and quantum infor- mation science. Notably, light-induced diradical species in such systems are gaining recognition as molecular qubits, offering long coherence times and spectroscopic addressability essential for quantum gate operations. By exploring design principles and technological implica- tions, this review underscores the unique position of all-organic spin-state photoswitches at the intersection of photochemistry, magnetism, and quantum materials development.

Item Type:	Article
Creators:	Creators Email ORCID ORCID Put Code Miyamura, Takuma UNSPECIFIED https://orcid.org/0009-0004-7134-924X UNSPECIFIED Schlecht, Joël UNSPECIFIED https://orcid.org/0009-0000-2187-7985 UNSPECIFIED Dumele, Oliver UNSPECIFIED https://orcid.org/0000-0002-3277-6570 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-802036
Identification Number:	10.1002/anie.202512691
Journal or Publication Title:	Angewandte Chemie International Edition
Volume:	64
Number:	38
Page Range:	pp. 1-15
Number of Pages:	15
Date:	15 September 2025
Publisher:	Wiley
ISSN:	1433-7851
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Biochemistry
Subjects:	Chemistry and allied sciences Life sciences
Uncontrolled Keywords:	Keywords Language Chromophores ; Diradicals ; Molecular magnetism ; Photoswitches ; Spin materials English
['eprint_fieldname_oa_funders' not defined]:	Publikationsfonds UzK
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/80203