ArticleThe journal of physical chemistry letters2022
Exciton Chirality Inversion in Dye Dimers Templated by DNA Holliday Junction.
Article in The journal of physical chemistry letters, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Tunable and robust optical and structural properties of a cooperative squaraine-dye aggregate-DNA DX-DAE tile system.Nanoscale · 2025Article
- Minimizing Structural Heterogeneity in DNA Self-Assembled Dye Templating via DNA Origami-Tuned Conformations.Langmuir : the ACS journal of surfaces and colloids · 2024Article
- Pursuing excitonic energy transfer with programmable DNA-based optical breadboards.Chemical Society reviews · 2023Review
- Exciton delocalization in a fully synthetic DNA-templated bacteriochlorin dimer.Physical chemistry chemical physics : PCCP · 2023Article
- Electronic Structure and Excited-State Dynamics of DNA-Templated Monomers and Aggregates of Asymmetric Polymethine Dyes.The journal of physical chemistry. A · 2023Article
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Authors and funding
10 authors.
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Abstract
While only one enantiomer of chiral biomolecules performs a biological function, access to both enantiomers (or enantiomorphs) proved to be advantageous for technology. Using dye covalent attachment to a DNA Holliday junction (HJ), we created two pairs of dimers of bis(chloroindolenine)squaraine dye that enabled strongly coupled molecular excitons of opposite chirality in solution. The exciton chirality inversion was achieved by interchanging single covalent linkers of unequal length tethering the dyes of each dimer to the HJ core. Dimers in each pair exhibited profound exciton-coupled circular dichroism (CD) couplets of opposite signs. Dimer geometries, modeled by simultaneous fitting absorption and CD spectra, were related in each pair as nonsuperimposable and nearly exact mirror images. The origin of observed exciton chirality inversion was explained in the view of isomerization of the stacked Holliday junction. This study will open new opportunities for creating excitonic DNA-based materials that rely on programmable system chirality.
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