Geometric effects in the excited states of conjugated trienes |
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| Authors: | John R. Andrews Bruce S. Hudson |
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| Affiliation: | Department of Chemistry, Stanford University, Stanford, California 94305, USA |
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| Abstract: | The fluorescence spectra and intrinsic lifetimes of two constrained trienes [cholesta-4,6,8(14)-triene and cholesta-5,7,9(11)-triene-3β-01] indicate that the lowest energy singlet—singlet transition of the s-trans,cis,s-trans 4,6,8(14) triene is a weak transition to a 1Ag-like excited state while the s-cis,trans,s-cis 5,7,9(11) triene has a lowest transition which is strongly allowed to a 1Bu-like excited state. |
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