Tuning the Förster overlap integral: energy transfer over 20 Ångstroms from a pyrene-based donor to borondipyrromethene (Bodipy)

Literature Information

Publication Date 2013-05-07
DOI 10.1039/C3CP50173F
Impact Factor 3.676
Authors

Dan Bai, Andrew C. Benniston, Jerry Hagon, Helge Lemmetyinen, Nikolai V. Tkachenko, Ross W. Harrington


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Abstract

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 Å. Emission from the donor originates from a mixed π–π* 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 Förster energy transfer (kEET) correlate fairly well with the calculated overlap integrals (JF). A sigmoidal relationship is observed between kEET and the solvent polarity function ΔF.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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