title: Single Lévy states-disorder induced energy funnels in molecular aggregates.
abstract: Using fluorescence super-resolution microscopy we studied simultaneous spectral, spatial localization, and blinking behavior of individual 1D J-aggregates. Excitons migrating 100 nm are funneled to a trap appearing as an additional red-shifted blinking fluorescence band. We propose that the trap is a Frenkel exciton state formed much below the main exciton band edge due to an environmentally induced heavy-tailed Lévy disorder. This points to disorder engineering as a new avenue in controlling light-harvesting in molecular ensembles.
authors.affiliation: Chemical Physics, Lund University , P.O. Box 124, 22100 Lund, Sweden.
authors.forename: Aboma
authors.initials: A
authors.lastname: Merdasa
authors.forename: Ángel  J
authors.initials: Á
authors.lastname: Jiménez
authors.forename: Rafael
authors.initials: R
authors.lastname: Camacho
authors.forename: Matthias
authors.initials: M
authors.lastname: Meyer
authors.forename: Frank
authors.initials: F
authors.lastname: Würthner
authors.forename: Ivan G
authors.initials: IG
authors.lastname: Scheblykin
keywords: Frenkel excitons; J-aggregates; Lévy distribution; energy funneling; single molecule spectroscopy; super-resolution microscopy