FEMTOCHEMISTRY IN NANOCAVITIES - DISSOCIATION, RECOMBINATION AND VIBRATIONAL COOLING OF IODINE IN CYCLODEXTRIN

We report studies of the femtosecond dynamics of reactions in confined nanocavities in water solutions. In an earlier publication [J. Phys. Chem. A 102 (1998) 1657] we reported studies of proton transfer and is omerization in these media. Here, we examine the elementary processes of dissociation, recombination and vibrational relaxation of the guest iodine molecule encapsulated into the cavity of cyclodextrin (diamete r similar to 8 Angstrom). For comparison, the relaxation dynamics of t he same guest in tetrahydrofuran and in pure water were also studied. (C) 1998 Elsevier Science B.V. All rights reserved.