On the characterization of three-state conical intersections using a group homomorphism approach: The two-state degeneracy spaces

Article Abstract:

Second-order degenerate perturbation theory, in conjunction with the group homomorphism method for describing a similarity transformation, are used to characterize the subspace of two-state conical intersections contained in the branching space of a three-state conical intersection. It is shown by explicit calculation, using the lowest three-state conical intersection of (CH)3N2, that a second-order treatment yields highly accurate absolute energies, even as significant distances from the references point of three-state intersection.

Analysis, Structure, Chemical properties, Perturbation (Mathematics), Pyrazoles

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Resonance light scattering and its application in determining the size, shape, and aggregation number for supramolecular assemblies of chromophores

Article Abstract:

Resonance light scattering measurements have much potential for investigating supramolecular assemblies of chromophores. The average size of the aggregates is determined by the concentration of acidified tetrakis(4-sulfonatophenyl)porphine.

Research, Light scattering, Absorption of light, Light absorption

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