Exchange interactions in photoinduced magnetostructural states of copper(ii)–nitroxide spin dyads

Exchange interactions in photoinduced magnetostructural states of copper(ii)–nitroxide spin dyads Full article

Journal

Dalton Transactions
ISSN: 1477-9226

Output data

Year: 2020, Volume: 49, Number: 18, Pages: 5851-5858 Pages count : 8 DOI: 10.1039/d0dt00706d

Authors

Tumanov Sergey V. ^1,2 , Veber Sergey L. ^1,2 , Tolstikov Svyatoslav E. ¹ , Artiukhova Natalia A. ¹ , Ovcharenko Victor I. ¹ , Fedin Matvey V. ^1,2

Affiliations

1	International Tomography Center SB RAS
2	Novosibirsk State University, Novosibirsk

Copper(II) complexes with stable nitroxide radicals are capable of magnetostructural spin-crossover like anomalies induced by external stimuli. Photoswitching in such systems is particularly important; however, retrieving the properties of photoinduced states is challenging and requires development of novel approaches. In this work, we investigate the exchange interactions in metastable photoinduced states of two compounds containing copper(II)–nitroxide dyads. Using Electron Paramagnetic Resonance (EPR) with photoexcitation we obtain temperature dependence of magnetic susceptibility in the photoinduced state and estimates for the corresponding values of exchange coupling in the studied complexes. The interplay between intra- and inter-cluster exchange couplings is considered and analyzed. The proposed methodology is applicable also to other photoswitchable exchange-coupled systems.

Tumanov S.V. , Veber S.L. , Tolstikov S.E. , Artiukhova N.A. , Ovcharenko V.I. , Fedin M.V.
Exchange interactions in photoinduced magnetostructural states of copper(ii)–nitroxide spin dyads
Dalton Transactions. 2020. V.49. N18. P.5851-5858. DOI: 10.1039/d0dt00706d WOS Scopus

Published print:

May 14, 2020

Web of science:	WOS:000534340700011
Scopus:	2-s2.0-85084693847

DB	Citing
Scopus	6
Web of science	5