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Construction of energy transfer pathways self-assembled from DNA-templated stacks of anthracene

Paper ID Volume ID Publish Year Pages File Format Full-Text
30438 44478 2014 6 PDF Available
Title
Construction of energy transfer pathways self-assembled from DNA-templated stacks of anthracene
Abstract

•We obtained anthracene stacks self-assembled from nucleotide-appended anthracene dye TACT.•We obtained anthracene stacks self-assembled from TACT and DNA as a templates.•We describe optical properties of the anthracene stacks.•The time-resolved fluorescence spectra of these anthracene stacks exhibited different features.•We concluded energy transfer pathway was constructed by the DNA-templated anthracene assembly.

We describe optical properties of anthracene stacks formed from single-component self-assembly of thymidylic acid-appended anthracene 2,6-bis[5-(3′-thymidylic acid)pentyloxy] anthracene (TACT) and the binary self-assembly of TACT and complementary 20-meric oligoadenylic acid (TACT/dA20) in an aqueous buffer. UV–Vis and emission spectra for the single-component self-assembly of TACT and the binary self-assembly of TACT/dA20 were very consistent with stacked acene moieties in both self-assemblies. Interestingly, time-resolved fluorescence spectra from anthracene stacks exhibited very different features of the single-component and binary self-assemblies. In the single-component self-assembly of TACT, a dynamic Stokes shift (DSS) and relatively short fluorescence lifetime (τ = 0.35 ns) observed at around 450 nm suggested that the anthracene moieties were flexible. Moreover, a broad emission at 530 nm suggested the formation of an excited dimer (excimer). In the binary self-assembly of TACT/dA20, we detected a broad, red-shifted emission component at 534 nm with a lifetime (τ = 0.4 ns) shorter than that observed in the TACT single-component self-assembly. Combining these results with the emission spectrum of the binary self-assembly of TACT/5′-HEX dA20, we concluded that the energy transfer pathway was constructed by columnar anthracene stacks formed from the DNA-templated self-assembly of TACT.

Graphical abstractEfficient energy transfer pathways are constructed from the stacks of the anthracene formed by molecular recognition directed binary self-assembly of thymidylic acid-appended anthracene dye and DNA as a template.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Acene; DNA; Energy transfer; Excimer; Nanostructures; Self-assembly
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Construction of energy transfer pathways self-assembled from DNA-templated stacks of anthracene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 130, 5 January 2014, Pages 199–204
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us