dc.contributor.author |
Barskaya I. |
|
dc.contributor.author |
Tretyakov E. |
|
dc.contributor.author |
Sagdeev R. |
|
dc.contributor.author |
Ovcharenko V. |
|
dc.contributor.author |
Bagryanskaya E. |
|
dc.contributor.author |
Maryunina K. |
|
dc.contributor.author |
Takui T. |
|
dc.contributor.author |
Sato K. |
|
dc.contributor.author |
Fedin M. |
|
dc.date.accessioned |
2018-09-18T20:01:14Z |
|
dc.date.available |
2018-09-18T20:01:14Z |
|
dc.date.issued |
2014 |
|
dc.identifier.issn |
0002-7863 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/135799 |
|
dc.description.abstract |
Most photoswitchable molecular magnets exhibit thermally induced switching, as is typical of spin crossover (SCO), valence tautomerism and SCO-like phenomena. We report a rare case of a copper-nitroxide based molecular magnet Cu(hfac)2Li-Pr that does not exhibit quantitative SCO-like behavior in the temperature range of its chemical stability (2-350 K); however, it can be switched to a metastable thermally inaccessible spin state via visible/near-IR light at cryogenic temperatures. By means of photogeneration, unique information on this otherwise unobservable spin state has been obtained using steady-state Q-band (34 GHz) and time-resolved W-band (94 GHz) electron paramagnetic resonance (EPR) spectroscopy. In particular, we have found that the electronic structure and relaxation properties of the photoinduced state in Cu(hfac)2Li-Pr are very similar to those in its sister compound Cu(hfac)2Ln-Pr that is thermally switchable and has been exhaustively characterized by many analytical methods, previously. The first observation of photoswitchable behavior in a thermally unswitchable copper-nitroxide based molecular magnet Cu(hfac)2Li-Pr paves the way for photoswitching applications of this and similar compounds in the remarkably broad temperature range of 2-350 K. © 2014 American Chemical Society. |
|
dc.relation.ispartofseries |
Journal of the American Chemical Society |
|
dc.title |
Photoswitching of a thermally unswitchable molecular magnet Cu(hfac) 2Li-Pr evidenced by steady-state and time-resolved electron paramagnetic resonance |
|
dc.type |
Article |
|
dc.relation.ispartofseries-issue |
28 |
|
dc.relation.ispartofseries-volume |
136 |
|
dc.collection |
Публикации сотрудников КФУ |
|
dc.relation.startpage |
10132 |
|
dc.source.id |
SCOPUS00027863-2014-136-28-SID84904438262 |
|