relation: http://d-scholarship-dev.library.pitt.edu/17377/ title: Real space analysis of excitonic interactions and coherence length in helical aggregates creator: Piryatinski, A creator: Asher, SA creator: Mukamel, S description: The effective exciton coherence length in molecular aggregates is calculated using a nonlocal, real-space representation of the linear optical response. Simulations of polarized absorption and linear dichroism demonstrate that the spectra depend on local properties of the molecular aggregate segment where the exciton coherence is delocalized. This allows us to limit the calculations to small segments of a large aggregate, avoiding the complexity of computing long-range coherences. date: 2002-04-11 type: Article type: PeerReviewed format: text/plain language: en rights: attached identifier: http://d-scholarship-dev.library.pitt.edu/17377/1/licence.txt identifier: Piryatinski, A and Asher, SA and Mukamel, S (2002) Real space analysis of excitonic interactions and coherence length in helical aggregates. Journal of Physical Chemistry A, 106 (14). 3524 - 3530. ISSN 1089-5639 relation: 10.1021/jp012849n