Photoswitchable Intramolecular Through-Space Magnetic Interaction

The interaction between two TEMPO spin centers connected to a photoswitchable overcrowded alkene changes from noncoupled (three-line EPR spectrum) in the trans state, where the two spin centers are separated by ∼22 Å, to strongly coupled (five-line EPR spectrum) in the cis state, where the separatio...

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Bibliographic Details
Published inJournal of the American Chemical Society Vol. 133; no. 21; pp. 8162 - 8164
Main Authors Wang, Jiaobing, Hou, Lili, Browne, Wesley R, Feringa, Ben L
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 01.06.2011
Amer Chemical Soc
Subjects
Chemistry
Chemistry, Multidisciplinary
Physical Sciences
Science & Technology
MOLECULAR MOTORS
DIARYLETHENE
RADICALS
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ISSN0002-7863
1520-5126
1520-5126
DOI10.1021/ja202882q

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Summary:The interaction between two TEMPO spin centers connected to a photoswitchable overcrowded alkene changes from noncoupled (three-line EPR spectrum) in the trans state, where the two spin centers are separated by ∼22 Å, to strongly coupled (five-line EPR spectrum) in the cis state, where the separation is ∼7 Å, upon photoswitching. Importantly, the performance of the alkene switching unit is essentially unaffected by the spin centers.
Bibliography:European Research Council (ERC)
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ISSN:0002-7863
1520-5126
1520-5126
DOI:10.1021/ja202882q