Photodissociation of I-2 in solution: the observation of solvent-dependentnear-infrared emission associated with I(P-2(1/2))-solvent interaction

The photolysis of molecular iodine in solution phase has been investigated by Fourier transform techniques coupled with an ultrasensitive near-infrare d detecting system. The spectral features and relaxation dynamics of the re sulting 1200-1600 nm emission revealed strong solvent dependence. Detailed analyses conclude that the emitting species are attributed to the iodine at om (P-2(1/2) --> (2)p(3/2)) magnetic dipole transition in the near infrared perturbed by iodine atom-solvent complexes. (C) 1999 Elsevier Science B.V. All rights reserved.