Controlled Förster energy transfer in emissive polymer Langmuir-Blodgett structures

J. Hill, S. Y. Heriot, O. Worsfold, T. H. Richardson, A. M. Fox, D. D.C. Bradley

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47 Scopus citations


We have investigated the effect of the guest-host separation on Förster transfer rate between two fluorescent polymers grown as layered nanostructures by the Langmuir-Blodgett technique. Precise variation of chromophore separation achieved by the monolayer deposition of an inert spacer layer between guest and host molecules allows control over the transfer rate. By fitting theoretical models to the observed data we find that an inverse square relationship (i.e., energy transfer rate kET∝R−2, where R is the distance between the layers) exists for the two-dimensional layered nanostructures, as opposed to the more widely quoted kET∝R−6dependence assumed for point-like dipole-dipole interactions. © 2004 The American Physical Society.
Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number4
StatePublished - Jan 15 2004
Externally publishedYes

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