Journal
CHEMICAL PHYSICS LETTERS
Volume 384, Issue 1-3, Pages 9-15Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2003.11.074
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The excited-state dynamics of all-trans-neurosporene in n-hexane solution, on excitation to the 1B(u)(+)(v = 0) state, was examined by time-resolved, fluorescence up-conversion spectroscopy. The application of singular value-decomposition followed by global-fitting to a time-resolved fluorescence data matrix showed the internal conversion of 1B(u)(+) --> 1B(u)(-) --> 2A(g)(-) (time constants, 0.06 and 0.27 ps) and strong fluorescence from the covalent 1B(u)(-) state. The transition dipole moment of the 1B(u)(-) state relative to that of the 1B(u)(+) state was estimated to be 0.56, the value of which reflects strong mixing between these states located close-by. (C) 2003 Elsevier B.V. All rights reserved.
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