6533b7dbfe1ef96bd126f837
RESEARCH PRODUCT
Electronic coupling responsible for energy transfer in columnar liquid crystals
Philippe MilliéHelmut RingsdorfHervé SigalDimitra MarkovitsiSandeep KumarPanos ArgyrakisLazaros K. GallosSylvie Marguetsubject
Range (particle radiation)Analytical chemistryGeneral Physics and AstronomyTriphenyleneOrbital overlapMolecular physicsFluorescence spectroscopyCoupling (electronics)Dipolechemistry.chemical_compoundchemistryLiquid crystalPhysical and Theoretical ChemistryExcitationdescription
Electronic coupling is the driving force for energy transfer in molecular materials and consists of several components. We determine the strength of dipolarrmultipolar coupling and coupling due to orbital overlap for excitation transport in triphenylene columnar liquid crystals. We use time-resolved fluorescence spectroscopy and computer simulations. The fit of the experimental and simulated fluorescence decays reveals that the transfer process is dominated by short range interactions .multipolar and orbital overlap but the contribution of long range dipolar interactions cannot be neglected. q 1999 Elsevier Science B.V. All rights reserved.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-06-01 |