title: Electronic Energy Transfer Modulation in a Dynamic Foldaxane: Proof-of-Principle of a Lifetime-Based Conformation Probe.
abstract: Abiotic aromatic oligoamide foldamers are shown to self-assemble in solution to form a double helix, which can accommodate a bichromophoric thread in its central void. While in solution reversible electronic energy transfer is instilled between chromophoric termini of the free, flexible thread as evidenced through delayed luminescence, upon rigidification of the rod the chromophores are mutually distanced and effectively decoupled. Consequently, the chromophores display their individual photophysical characteristics. The observed conformation-dependent changes of dynamic luminescence properties, which are particularly sensitive to distance, offers a new strategy for lifetime-based detection of geometry on the molecular scale as demonstrated through real-time luminescence detection of molecular complexation leading to foldaxane formation.
authors.affiliation: Univ. Bordeaux-CNRS UMR 5255, 351 Crs de la Libération, 33405, Talence, France.|Univ. Bordeaux-CNRS UMR 5798, 351 Crs de la Libération, 33405, Talence, France.
authors.forename: Sergey A
authors.initials: SA
authors.lastname: Denisov
authors.affiliation: Université de Bordeaux, CBMN, UMR5248, Institut Européen de Chimie et Biologie, 2 rue Escarpit, 33600, Pessac, France.|CNRS, CBMN, UMR5248, France.
authors.forename: Quan
authors.initials: Q
authors.lastname: Gan
authors.affiliation: Université de Bordeaux, CBMN, UMR5248, Institut Européen de Chimie et Biologie, 2 rue Escarpit, 33600, Pessac, France.|CNRS, CBMN, UMR5248, France.
authors.forename: Xiang
authors.initials: X
authors.lastname: Wang
authors.affiliation: Univ. Bordeaux-CNRS UMR 5255, 351 Crs de la Libération, 33405, Talence, France.
authors.forename: Luca
authors.initials: L
authors.lastname: Scarpantonio
authors.affiliation: Université de Bordeaux, CBMN, UMR5248, Institut Européen de Chimie et Biologie, 2 rue Escarpit, 33600, Pessac, France. y.ferrand@iecb.u-bordeaux.fr.|CNRS, CBMN, UMR5248, France. y.ferrand@iecb.u-bordeaux.fr.
authors.forename: Yann
authors.initials: Y
authors.lastname: Ferrand
authors.affiliation: Université de Bordeaux, UMS3033, Institut Européen de Chimie et Biologie (IECB), 2 rue Escarpit, 33600, Pessac, France.|CNRS, IECB, UMS3033-INSERM, IECB, US001, France.
authors.forename: Brice
authors.initials: B
authors.lastname: Kauffmann
authors.affiliation: Univ. Bordeaux-CNRS UMR 5798, 351 Crs de la Libération, 33405, Talence, France.
authors.forename: Gediminas
authors.initials: G
authors.lastname: Jonusauskas
authors.affiliation: Université de Bordeaux, CBMN, UMR5248, Institut Européen de Chimie et Biologie, 2 rue Escarpit, 33600, Pessac, France.|CNRS, CBMN, UMR5248, France.
authors.forename: Ivan
authors.initials: I
authors.lastname: Huc
authors.affiliation: Univ. Bordeaux-CNRS UMR 5255, 351 Crs de la Libération, 33405, Talence, France. nathan.mcclenaghan@u-bordeaux.fr.
authors.forename: Nathan D
authors.identifier: http://orcid.org/0000-0003-0285-1741
authors.initials: ND
authors.lastname: McClenaghan
keywords: foldamers; molecular machines; photochemistry; reversible electronic energy transfer; ruthenium