We discuss cooperative and collective behavior resulting from classical electrostatic intermolecular interactions in molecular materials with negligible intermolecular overlap. With reference to materials based on push-pull chromophores, we discuss the merits of several approximation schemes for the calculation of linear and non-linear optical susceptibilities. Collective and cooperative behavior is recognized in important deviations of the material properties from the oriented gas approximation scheme, and/or from the exciton model. Extreme collective and cooperative behavior in attractive clusters is discussed, where bistable behavior and the phenomenon of multielectron-transfer appear.
CITATION STYLE
Painelli, A., & Terenziani, F. (2006). Collective and Cooperative Phenomena in Molecular Functional Materials. In Challenges and Advances in Computational Chemistry and Physics (Vol. 1, pp. 251–282). Springer. https://doi.org/10.1007/1-4020-4850-5_7
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