Influence of exciton-phonon interaction on long energy transport in   J-aggregates
  This paper presents a theoretical model intended to address the question of energy transfer in two-dimensional molecular assemblies such as Scheibe aggregates. A new phonon-exciton interaction is introduced to explain the exciton width in J aggregates. It is shown that the long range energy transport can occur for weakly interacting acceptors. 
E.A. Bartnik, M. Bednarz