Photophysics of J-Aggregate-Mediated Energy Transfer on DNA

James L. Banal, Toru Kondo, Rémi Veneziano, Mark Bathe, Gabriela S. Schlau-Cohen

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

Achieving nanoscale spatial and electronic control over the formation of dye aggregates is a major synthetic challenge due to their typically inhomogeneous self-assembly, which limits control over their higher-order organization. To address these challenges, synthetic DNA-templated pseudoisocyanine (PIC) J-aggregates were recently introduced. However, the dependence of the photophysics of the superradiant exciton on the underlying DNA template length and the impact of static disorder on energy transfer through these PIC J-aggregates remain unknown. We examine the delocalization length progression of superradiant PIC excitons by varying the length of poly-A DNA tracts that template PIC J-aggregates. We then investigate the energy-transfer efficiency from PIC J-aggregates with DNA duplex template length, which we found to be limited by static disorder. Utilizing the self-assembled and selective formation of superradiant excitons on DNA provides a platform to determine the function of delocalized excitons in the context of nanoscale energy transport.

Original languageEnglish
Pages (from-to)5827-5833
Number of pages7
JournalJournal of Physical Chemistry Letters
Volume8
Issue number23
DOIs
Publication statusPublished - 2017 Dec 7
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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