Engineering couplings for exciton transport using synthetic DNA scaffolds

Hart, Stephanie M.; Chen, Wei Jia; Banal, James L.; Bricker, William P.; Dodin, Amro; Markova, Larysa; Vyborna, Yuliia; Willard, Adam P.; Häner, Robert; Bathe, Mark; Schlau-Cohen, Gabriela S. (2021). Engineering couplings for exciton transport using synthetic DNA scaffolds. Chem, 7(3), pp. 752-773. Elsevier 10.1016/j.chempr.2020.12.020

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Control over excitons enables electronic energy to be harnessed and transported for light harvesting and molecular electronics. Such control requires nanoscale precision over the molecular components. Natural light-harvesting systems achieve this precision through sophisticated protein machinery, which is challenging to replicate synthetically. Here, we introduce a DNA-based platform that spatially organizes cyanine chromophores to construct tunable excitonic systems. We synthesized DNA-chromophore nanostructures and characterized them with ensemble ultrafast and singlemolecule spectroscopy and structure-based modeling. This synthetic approach facilitated independent control over the coupling among the chromophores and between the chromophores and the environment. We demonstrated that the coupling between the chromophores and the environment could enhance exciton transport efficiency, highlighting the key role of the environment in driving exciton dynamics. Control over excitons, as reported here, offers a path toward the development of designer nanophotonic devices.

Item Type:

Journal Article (Original Article)

Division/Institute:

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

UniBE Contributor:

Markova, Larysa; Vyborna, Yuliia and Häner, Robert

Subjects:

500 Science > 540 Chemistry

ISSN:

2451-9294

Publisher:

Elsevier

Language:

English

Submitter:

Robert Häner

Date Deposited:

23 Jun 2021 10:41

Last Modified:

23 Jun 2021 10:50

Publisher DOI:

10.1016/j.chempr.2020.12.020

BORIS DOI:

10.48350/152792

URI:

https://boris.unibe.ch/id/eprint/152792

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