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dc.contributor.authorZiessel, Raymond
dc.contributor.authorStachelek, Patrycja
dc.contributor.authorHarriman, Anthony
dc.contributor.authorHedley, Gordon J.
dc.contributor.authorRoland, Thomas
dc.contributor.authorRuseckas, Arvydas
dc.contributor.authorSamuel, Ifor D. W.
dc.identifier.citationZiessel , R , Stachelek , P , Harriman , A , Hedley , G J , Roland , T , Ruseckas , A & Samuel , I D W 2018 , ' Ultrafast through-space electronic energy transfer in molecular dyads built around dynamic spacer units ' , Journal of Physical Chemistry A , vol. 122 , no. 18 , pp. 4437-4447 .
dc.identifier.otherPURE: 258614692
dc.identifier.otherPURE UUID: cbe8bf30-0512-406f-bcbf-08204e168702
dc.identifier.otherWOS: 000432204200007
dc.identifier.otherScopus: 85046473198
dc.identifier.otherORCID: /0000-0001-9114-3522/work/56639035
dc.identifier.otherWOS: 000432204200007
dc.descriptionFunding: University of Newcastle.en
dc.description.abstractA pair of complementary molecular dyads have been synthesized around a 1,2-diaminocyclohexyl spacer that itself undergoes ring inversion. Despite these conformational exchange processes, the donor and acceptor occupy quite restricted spatial regions, and they are not interchangeable. The donor and acceptor pair comprise disparate boron dipyrromethene dyes selected to display favorable electronic energy transfer (EET). Steady-state emission spectroscopy confirms that through-space EET from donor to acceptor is almost quantitative, aided by the relatively short separations. Ultrafast time-resolved fluorescence spectroscopy has allowed determination of the rates of EET for both dyads. Surprisingly, in view of the close proximity of donor and acceptor (center-to-center separations less than 20 A), the EET dynamics are well-accounted for in terms of the computed molecular conformations and conventional Forster theory. One dyad appears as a single family of conformations, but EET for the second dyad corresponds to dual-exponential kinetics. In this latter case, an intramolecular hydrogen bond helps stabilize an open geometry, wherein EET is relatively slow.
dc.relation.ispartofJournal of Physical Chemistry Aen
dc.rights© 2018, American Chemical Society. This work has been made available online in accordance with the publisher's policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at
dc.subjectForster resonanceen
dc.subjectOrientation factoren
dc.subjectTransfer ratesen
dc.subjectBiodipy dyesen
dc.subjectQC Physicsen
dc.subjectQH301 Biologyen
dc.titleUltrafast through-space electronic energy transfer in molecular dyads built around dynamic spacer unitsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.description.statusPeer revieweden

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