Author/Authors :
Gadermaier، نويسنده , , C and List، نويسنده , , E.J.W and Markart، نويسنده , , P and Graupner، نويسنده , , W and Partee، نويسنده , , J and Shinar، نويسنده , , J and Smith، نويسنده , , R and Gin، نويسنده , , D and Leising، نويسنده , , G، نويسنده ,
Abstract :
We have used continuous wave photoinduced absorption (PIA) to probe the (spin-1/2) polaron and (spin-1) triplet excitations in bulk poly(para-phenylene vinylene) (PPV) films and isolated PPV chains incorporated into a self-assembled matrix ordered at the nanometer scale (nano-PPV). The ordering is a result of the lyotropic liquid crystalline character of the matrix material. We investigated the influence of the chain isolation on the transition energies and the effect of the resulting one-dimensionality on the excitation dynamics.
