2011/06/13 by Alexander Eisfeld, A. Eisfeld, G. V. Schulz +3 · 1 citation
Chemistry · Materials Science · Mathematics · Physics and Astronomy · #Aggregate (composite) #Atomic physics #Chemistry #Condensed matter physics #Dipole #Exciton #Geometry #Materials science #Mathematics #Molecular physics #Molecule #Monomer #Nanotechnology #Nuclear magnetic resonance #Orientation (vector space) #Photochemistry and Electron Transfer Studies #Physics #Polymer #Quantum #Quantum Dots Synthesis And Properties #Quantum mechanics #Scattering #Spectral line #Spectroscopy and Quantum Chemical Studies #Vibronic coupling #Vibronic spectroscopy #quant-ph
paper · pdf · doi:10.1016/j.jlumin.2011.06.043
published as Journal of Luminescence 131 (2011) 2555
arxiv created 2011/06/13 · openalex publication_date 2011/06/30 · arxiv updated 2011/07/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A study is presented of the localisation of excitonic states on extended molecular aggregates composed of identical monomers arising, not from disorder due to statistical energy shifts of the monomers, induced by environmental interactions (Anderson localisation), but rather simply due to changes in the orientation and geometrical arrangement of the transition dipoles. It is shown further that such small changes nevertheless can have a drastic effect on the shape of the vibronic spectrum of the aggregate. The vibronic spectra are calculated using the "coherent exciton scattering" (CES) approximation whose derivation we generalise to be applicable to aggregates of arbitrary size and geometry.