Thermal control over the extent of photoinduced electron transfer in helical oligopeptides
Abstract
Time-resolved fluorescence studies of an electron donor–acceptor modified helical oligopeptide, in acetonitrile, show a biexponential decay with a short lifetime component attributed to rapid photoinduced electron transfer (PET), which increases from 15% of the total fluorescence at –40 °C to 58% on warming to 0 °C and then more gradually to 67% at 60 °C.