title: Mesoscopic order and the dimensionality of long-range resonance energy transfer in supramolecular semiconductors.
abstract: We present time-resolved photoluminescence measurements on two series of oligo-p-phenylenevinylene materials that self-assemble into supramolecular nanostructures with thermotropic reversibility in dodecane. One set of derivatives form chiral helical stacks, while the second set form less organized "frustrated" stacks. Here we study the effects of supramolecular organization on the resonance energy transfer rates. We measure these rates in nanoassemblies formed with mixed blends of oligomers and compare them with the rates predicted by Forster theory. Our results and analysis show that control of supramolecular order in the nanometer length scale has a dominant effect on the efficiency and dimensionality of resonance energy transfer.
authors.affiliation: Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge CH3 0HE, United Kingdom.
authors.forename: Clément
authors.initials: C
authors.lastname: Daniel
authors.forename: François
authors.initials: F
authors.lastname: Makereel
authors.forename: Laura M
authors.initials: LM
authors.lastname: Herz
authors.forename: Freek J M
authors.initials: FJ
authors.lastname: Hoeben
authors.forename: Pascal
authors.initials: P
authors.lastname: Jonkheijm
authors.forename: Albertus P H J
authors.initials: AP
authors.lastname: Schenning
authors.forename: E W
authors.initials: EW
authors.lastname: Meijer
authors.forename: Carlos
authors.initials: C
authors.lastname: Silva