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Photophysics of J-Aggregate-Mediated Energy Transfer on DNA

Journal Article · · Journal of Physical Chemistry Letters
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. Furthermore, 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.
Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
Army Research Office; National Science Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001088
OSTI ID:
1821493
Alternate ID(s):
OSTI ID: 1470516
Journal Information:
Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Journal Issue: 23 Vol. 8; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Bioproduction of pure, kilobase-scale single-stranded DNA journal April 2019
Utilizing the Organizational Power of DNA Scaffolds for New Nanophotonic Applications journal July 2019
Excitonic channels from bio-inspired templated supramolecular assembly of J-aggregate nanowires journal January 2019
Molecular model of J-aggregated pseudoisocyanine fibers journal July 2018

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