Chemical Physics Letters vol:286 issue:5-6 pages:452-456
alpha-Terthiophene (alpha T) has been photophysically and photochemically investigated in a non-ionic micellar environment. The distribution of alpha T amongst micelles is poissonian, this distribution determining its photophysical and photochemical reactivity. Neither ground-state alpha T, nor its tripler, migrates between micelles while the radical cation does so via. the aqueous hulk. From transient absorption measurements. with different laser energies. it is concluded that the creation of the radical alpha T.+ is biphotonic. contrary to what has been reported for homogeneous solutions. (C) 1998 Elsevier science B.V.