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Journal articles
Light-Induced Spin State Switching in Copper(II)-Nitroxide-Based Molecular Magnet at Room Temperature
Abstract : Molecular magnets Cu(hfac)(2)L-R exhibit an unusual type of photoinduced magnetostructural switching in exchange-coupled copper(II)-nitroxide clusters. Such photoswitching from strongly coupled to weakly coupled spin state (SS -> WS) was recently found to be ultrafast, thus enhancing the interest in these systems and the scope of their potential applications. However, to date such SS -> WS photoswitching was demonstrated only at cryogenic temperatures, being limited by the absence of suitable SS states and short relaxation times at T > 100 K. In this work we selected model compound Cu(hfac)(2)Liso-Pr residing in the mixed SS/WS state at room temperature and investigated it using femtosecond optical spectroscopy. Photoinduced spin dynamics was detected, and an ultrafast SS -> WS photoswitching was for the first time demonstrated at room temperature, constituting an important milestone in the development of copper(II)-nitroxide molecular magnets for practical purposes.
Cited literature [41 references]
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01681159
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Wednesday, February 28, 2018 - 2:47:08 PM
Last modification on : Friday, July 2, 2021 - 2:57:42 PM
Long-term archiving on: : Monday, May 28, 2018 - 1:01:56 PM
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Wednesday, February 28, 2018 - 2:47:08 PM
Last modification on : Friday, July 2, 2021 - 2:57:42 PM
Long-term archiving on: : Monday, May 28, 2018 - 1:01:56 PM
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