We present a study of the photoexcitations of poly-3-alkylthiophene solutions. Phototransients with lifetimes of 1 mu s-10 ms are observed by measuring the steady state and transient photoinduccd absorption on a good solvent solution. The long lived photoexcited states are assigned to charged species which are generated and recombine through a weak reversible polymer-solvent charge-transfer. A short lived photoinduced band at 1.65 eV is assigned to a dipole allowed triptet-triplet transition.
PHOTOEXCITED STATES IN POLY-3-ALKYLTHIOPHENE SOLUTIONS
BOTTA C;LUZZATI S;BOLOGNESI A;
1995
Abstract
We present a study of the photoexcitations of poly-3-alkylthiophene solutions. Phototransients with lifetimes of 1 mu s-10 ms are observed by measuring the steady state and transient photoinduccd absorption on a good solvent solution. The long lived photoexcited states are assigned to charged species which are generated and recombine through a weak reversible polymer-solvent charge-transfer. A short lived photoinduced band at 1.65 eV is assigned to a dipole allowed triptet-triplet transition.File in questo prodotto:
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