Light-Harvesting Antenna: Detection of Polyaromatic Molecules by Supramolecular Fibers

Jevric, Jovana; Langenegger, Simon; Häner, Robert (25 August 2020). Light-Harvesting Antenna: Detection of Polyaromatic Molecules by Supramolecular Fibers (Unpublished). In: SCS Fall Meeting 2020. Online. 25.08.2020.

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The self-assembly of 3,6-disubstituted phenanthrene trimers with phosphodiester-bridges leads to the formation of supramolecular fibers. Previously, it was shown that these fibers act as an efficient light-harvesting antenna. So far, the acceptor was incorporated into an oligomer and added as such. Our new approach enables us to use various monomeric chromophores: the polyaromatic acceptor is added during the self-assembly process of the forming supramolecular polymer. Upon excitation of the phenanthrene units the energy is transferred to the acceptor, which emits the light in an increased intensity. Benzo(a)pyrene reached as one of the highest fluorescence quantum yield of 31% at an acceptor/phenanthrene ratio of 12 mol-%. The fibers were analyzed by microscopy (AFM, UV-vis, fluorescence). This allows us to detect small amounts of chromophores in an aqueous medium.

Item Type:

Conference or Workshop Item (Poster)

Division/Institute:

08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP)

UniBE Contributor:

Jevric, Jovana; Langenegger, Simon Matthias and Häner, Robert

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

Language:

English

Submitter:

Jovana Jevric

Date Deposited:

28 Oct 2020 17:22

Last Modified:

28 Oct 2020 17:22

BORIS DOI:

10.7892/boris.146179

URI:

https://boris.unibe.ch/id/eprint/146179

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