Fluorescence quenching involving donor-acceptor systems often involves either exciplex formation or photoinduced electron transfer mechanisms? Though in some donor-acceptor systems exciplex emission can be observed, in many of these cases exciplex emission might be difficult to observe due to many reasons. In these situations, how to establish convincingly whether the fluorescence quenching is due to exciplex formation or electron transfer mechanism?
Dear Andreas, I also feel that transient absorption spectroscopy could be the only answer to differentiate between exciplex formation and PET process. Thanks for your suggestion. If you come across any other answer please share with us.
Dear Dr. Pal,
Just wondering, if you thought about applying external magnetic field. There are few references for your consideration;
Article Time-Resolved Magnetic Field Effects Distinguish Loose Ion P...
and,
DOI: 10.1039/C0CP01517B
Thank you
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