Exciton transport and relaxation in optically excited phenylacetylene dendrimers is simulated using the Redfield equations. The interplay of entropic (periphery-bound) and energetic (center-bound) driving forces is explored. The fluorescence signal computed using the Doorway–Window representation provides a direct probe for exciton dynamics. The propagated exciton density matrix is analyzed and several measures of the time-dependent excitonic coherence sizes are proposed and calculated.
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Kirkwood et al. (2001) studied this question.
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