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Optically dectected ESR (OD-ESR) of iron-radical pairs in colored solutions: observation of transient trans-Azobenzene radical cation
Linköping University.
1993 (English)In: Applied Magnetic Resonance, ISSN 0937-9347, E-ISSN 1613-7507, Vol. 5, no 1, p. 77-86Article in journal (Refereed) Published
Abstract [en]

Trans-azobenzene dissolved in different liquid hydrocarbons absorbs fluorescence arising from all acceptors previously used in Fluorescence Detected Magnetic Resonance (FDMR) and Optically Detected ESR (OD ESR) spectroscopy making optical detection impossible. In this report a new acceptor, rubrene, having sufficient quantum yield of fluorescence in the red band 550-620 nm, has been proven successful. OD ESR spectra of the radical-ion pair trans-azobenzene+/rubrene- were detected in liquid squalane (2,6,10,15,19,23-hexamethyl-tetracosane) solution in the temperature range 294-243 K. The experimental isotropic hyperfine splittings of the radical cation of trans-azobenzene (a(N) = 1.4 mT) have been compared with those from MNDO/INDO calculations and with those of earlier work using freon matrix studies.

Place, publisher, year, edition, pages
1993. Vol. 5, no 1, p. 77-86
National Category
Physical Chemistry
Research subject
Chemistry of Interfaces
Identifiers
URN: urn:nbn:se:ltu:diva-4957Local ID: 2f70dd50-6751-11dc-a0c3-000ea68e967bOAI: oai:DiVA.org:ltu-4957DiVA, id: diva2:977831
Note

Upprättat; 1993; 20070920 (bajo)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Antzutkin, Oleg

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