Lookup NU author(s): Dan Bai,
Professor Andrew Benniston,
Dr Jerry Hagon,
Dr Ross Harrington
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A linear molecular dyad was synthesised comprising a pyrene-thiophene energy donor linked via a triazole unit to a borondipyrromethene (Bodipy) energy acceptor. The donor to acceptor separation distance is around 20 angstrom. Emission from the donor originates from a mixed pi-pi* and partial charge-transfer state and overlaps favourably with the absorption profile for the acceptor. The level of spectral overlap is dependent on the solvent polarity. Rates for electronic energy transfer were measured by transient absorption spectroscopy in solvents of varying polarity and refractive index. The measured rates for Forster energy transfer (k(EET)) correlate fairly well with the calculated overlap integrals (J(F)). A sigmoidal relationship is observed between k(EET) and the solvent polarity function Delta F.
Author(s): Bai D, Benniston AC, Hagon J, Lemmetyinen H, Tkachenko NV, Harrington RW
Publication type: Article
Publication status: Published
Journal: Physical Chemistry Chemical Physics
Online publication date: 07/05/2013
Acceptance date: 03/05/2013
ISSN (print): 1463-9076
ISSN (electronic): 1463-9084
Publisher: Royal Society of Chemistry
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