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Title: Strong nonmonotonous temperature dependence of exciton migration rate in J aggregates at temperatures from 5 to 300 K
Authors: Scheblykin, IG ×
Sliusarenko, OY
Lepnev, LS
Vitukhnovsky, AG
Van der Auweraer, Mark #
Issue Date: Jan-2000
Publisher: Amer chemical soc
Series Title: Journal of Physical Chemistry B vol:104 issue:47 pages:10949-10951
Abstract: This contribution presents the first measurement of the rate of exciton-exciton annihilation in J aggregates for which a strong nonmonotonous temperature dependence was found. Annihilation is suppressed at low temperature (T < 20 K), very pronounced in the temperature region of 20-70 K, and it decreases again while temperature increases from 70 to 300 K. We suggest that an exciton hopping process occurs at low temperature (T < 20 K), a coherent wave-packet-like exciton transport occurs in the intermediate temperature region (20-70 K), and a strong exciton scattering occurs on optical phonons at high temperatures (70-300 K). The exciton migration properties in J aggregates were compared with those in molecular crystals.
URI: 
ISSN: 1089-5647
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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