Spin Chemistry Investigation of Peculiarities of Photoinduced Electron Transfer in Donor–Acceptor Linked System

Photoinduced intramolecular electron transfer in linked systems, ( R,S )- and ( S,S )-naproxen- N -methylpyrrolidine dyads, has been studied by means of spin chemistry methods [magnetic field effect and chemically induced dynamic nuclear polarization (CIDNP)]. The relative yield of the triplet state...

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Bibliographic Details
Published in:Applied magnetic resonance 2011-12, Vol.41 (2-4), p.205-220
Main Authors: Magin, I. M., Polyakov, N. E., Khramtsova, E. A., Kruppa, A. I., Stepanov, A. A., Purtov, P. A., Leshina, T. V., Tsentalovich, Yu. P., Miranda, M. A., Nuin, E., Marin, M. L.
Format: Article
Language:English
Subjects:
Atomic energy levels
Atoms and Molecules in Strong Fields
Chemistry
Chromophores
Cytochrome
Electron transfer
Electrons
Enantiomers
Energy
Experiments
Laser Matter Interaction
Lasers
Magnetic fields
NMR
Nuclear magnetic resonance
Organic Chemistry
Physical Chemistry
Physics
Physics and Astronomy
Polarity
Solid State Physics
Spectroscopy/Spectrometry
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Summary:Photoinduced intramolecular electron transfer in linked systems, ( R,S )- and ( S,S )-naproxen- N -methylpyrrolidine dyads, has been studied by means of spin chemistry methods [magnetic field effect and chemically induced dynamic nuclear polarization (CIDNP)]. The relative yield of the triplet state of the dyads in different magnetic field has been measured, and dependences of the high-field CIDNP of the N -methylpyrrolidine fragment on solvent polarity have been investigated. However, both ( S,S )- and ( R,S )-enantiomers demonstrate almost identical CIDNP effects for the entire range of polarity. It has been demonstrated that the main peculiarities of photoprocesses in this linked system are connected with the participation of singlet exciplex alongside with photoinduced intramolecular electron transfer in chromophore excited state quenching.
ISSN:0937-9347
1613-7507
DOI:10.1007/s00723-011-0288-3