Stacked Conjugated Oligomers as Molecular Models to Examine Interchain Interactions in Conjugated Materials

Conjugated polymers as molecular materials: how chain conformation and film morphology influence energy transfer and interchain interactions.

The electronic structure of conjugated polymers is of current interest because of the wide range of potential applications for such materials in optoelectronic devices. It is increasingly clear that the electronic properties of conjugated polymers depend sensitively on the physical conformation of the polymer chains and the way the chains pack together in films. This article reviews the evidenc...

Conjugated polymer aggregates in solution: Control of interchain interactions

We present evidence that the degree of interchain interactions and morphology in conjugated polymer films can be controlled by altering the chain conformation in the solution from which the film is cast. Light scattering experiments show that the physical size of poly@2-methoxy-5~28-ethyl-hexyloxy!-1,4-phenylene vinylene] ~MEH-PPV! chains can vary by a factor of 2 in different solvents such as ...

Interchain interactions in conjugated materials: The exciton model versus the supermolecular approach

Influence of Interchain Interactions on the Absorption and Luminescence of Conjugated Oligomers and Polymers: A Quantum-Chemical Characterization

Correlated quantum-chemical calculations are used to investigate the influence of interchain interactions on the absorption and emission of π-conjugated chains. The results are discussed in relation to the utilization of conjugated materials as active elements in electro-optic devices; they provide guidelines on how to prevent a substantial decrease in luminescence yield in solid films. In high...

Interchain coupling effects on dynamics of photoexcitations in conjugated polymers.

Within an extended Su-Schrieffer-Heeger model including interchain interactions and the extended Hubbard model, the dynamical relaxation of photoexcitations in two coupled conjugated polymer chains is investigated by using a nonadiabatic evolution method. Initially, one of the two chains is photoexcited and the other chain is in the dimerized ground state. Due to the interchain interactions, th...