Abstract
Considerable interest has been directed to the electrical and optical properties of conjugated polymers because of their role as model compounds for quasi-1-D semiconductors, their often large nonresonant third-order nonlinear optical susceptibility, and their potential for practical applications. One well-studied example is polythiophene in which the ground state degeneracy is weakly lifted so that for rather slowly varying optical excitation or electrochemical doping, polarons and bipolarons are found to be the dominant excitations. 1–3 We report the first femtosecond spectroscopic data on poly(3-methylthiophene) films prepared by electrochemical polymerization.
© 1989 Optical Society of America
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