Time-resolved photo-CIDNP of dibenzyl ketone-β-cyclodextrin inclusion complex

This work presents the first observations of time-resolved photo-CIDNP in the dibenzyl-ketone-β-cyclodextrin (DBK–β-CD) inclusion complex. The photo-decay of the DBK–β-CD inclusion complex gives a benzyl radical that is held in the β-CD cavity for a time exceeding the time of its nuclear spin lattic...

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Bibliographic Details
Published in:Chemical physics letters 2004-02, Vol.385 (1), p.40-44
Main Authors: Petrova, S.S., Kruppa, A.I., Leshina, T.V.
Format: Article
Language:English
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Summary:This work presents the first observations of time-resolved photo-CIDNP in the dibenzyl-ketone-β-cyclodextrin (DBK–β-CD) inclusion complex. The photo-decay of the DBK–β-CD inclusion complex gives a benzyl radical that is held in the β-CD cavity for a time exceeding the time of its nuclear spin lattice relaxation. By estimating a change in the radical spin-lattice relaxation time in the complex, we determined that the rate constant of dissociation of β-CD complex with the radical is ⩽10 5 s −1.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2003.12.036