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Optically detected ESR (OD ESR) of radical-ion pairs in coloured solutions: Observation of transient Trans-Azobenzene Radical Cation
Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Physics and Mathematics.
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 pairtrans-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 oftrans-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
Springer- Verlag , 1993. Vol. 5, no 1, p. 77-86
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:miun:diva-10093DOI: 10.1007/BF03162475OAI: oai:DiVA.org:miun-10093DiVA, id: diva2:273035
Available from: 2009-10-19 Created: 2009-10-19 Last updated: 2017-12-12Bibliographically approved

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Koptioug, Andrei

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