Excited-state localization in a 3-fold-symmetric molecule as probed by electroabsorption spectroscopy

Article Abstract:

Excitation localization in a nominally 3-fold-symmetric molecule is probed using electroabsorption spectroscopy in polymer and organic glass matrixes. The localization evident from the electroabsorption spectrum results from ground-state geometrical disorder in the branches that renders their excitation energies nonequivalent and reduces the overall symmetry of the molecule.

Polymers, Absorption spectra

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Optical control of excited-state vibrational coherences of a molecule in solution: The influence of the excitation pulse spectrum and phase in LD690

Article Abstract:

The influence of both spectral shaping and phase shaping of the excitation pulse on the observation of vibrational coherences for the LD690 dye molecule is studied. Results suggest that spectral shaping can enhance the ability to selectively excite ground or excited-state coherences.

Vibrational spectra

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Effects of disorder-induced symmetry breaking on the electroabsorption properties of a model dendrimer

Article Abstract:

Disorder-induced symmetry breaking is studied in a model dendrimer that consists of three arms arranged with C3 symmetry. The symmetry breaking of the dendrimer is modeled as a function of its structural disorder.

Carbon, Molecular structure, Dendrimers

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