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 | Vardeny, Zeev Valentine | Conjugation-length dependence of spin-dependent excition formations rates in ∏-conjugated oligomers and polymers | We have measured the ratio, r =ơ s/ơT of the formation cross section, ơ of singlet and triplet excitons from polarons in ∏-conjugated oligomer and polymer films, using a spectroscopic technique we developed recently. We discovered a universal relation between r and the conjugation length (CL): ... | pi-conjugated polymers; Conjugation length; Polaron recombination | 2002-04 |