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Spin-orbit coupling controlled spin chemistry of Ru(bpy)3 2+ photooxidation : detection of strong viscosity dependence of in-cage backward electron transfer rate

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Spin_orbit_coupling_controlled_spin_chemistry_of_Ru.pdf
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Datum

1995

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Wolff, Hans-Joachim
Bürßner, Dieter

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-48953
DOI (zitierfähiger Link)
https://doi.org/10.1351/pac199567010167
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Attribution-NonCommercial-NoDerivs 2.0 Generic

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Open Access Green

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Chemie: Publikationen
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Published

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Pure and applied chemistry. 1995, 67(1), pp. 167-174. ISSN 0033-4545. eISSN 1365-3075. Available under: doi: 10.1351/pac199567010167

Zusammenfassung

The magnetic field dependence of ηce, the cage escape yield of radicals generated by photoelectron transfer between Ru(bpy)3 2+ and methylviologen (MV++) was investigated for a series of solvent mixtures of increasing viscosity, obtained by adding ethylene glycol (EGLY) to H20/ACN. From the experimental results the absolute values of the rate parameters characterizing the primary radical ion pair (kce for cage escape, τs for spin relaxation, and kbet for spin-allowed backward electron transfer) have been obtained. Particularly noteworthy is the strong viscosity dependence of kbet , which can be assigned to dielectric solvent relaxation as the rate limiting step of backward electron transfer in the EGLY containing solvents.

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540 Chemie

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ISO 690WOLFF, Hans-Joachim, Dieter BÜRSSNER, Ulrich STEINER, 1995. Spin-orbit coupling controlled spin chemistry of Ru(bpy)3 2+ photooxidation : detection of strong viscosity dependence of in-cage backward electron transfer rate. In: Pure and applied chemistry. 1995, 67(1), pp. 167-174. ISSN 0033-4545. eISSN 1365-3075. Available under: doi: 10.1351/pac199567010167
BibTex
@article{Wolff1995Spino-9852,
  year={1995},
  doi={10.1351/pac199567010167},
  title={Spin-orbit coupling controlled spin chemistry of Ru(bpy)3 2+ photooxidation : detection of strong viscosity dependence of in-cage backward electron transfer rate},
  number={1},
  volume={67},
  issn={0033-4545},
  journal={Pure and applied chemistry},
  pages={167--174},
  author={Wolff, Hans-Joachim and Bürßner, Dieter and Steiner, Ulrich}
}
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