Conformational dynamics of semiflexibly bridged donor-acceptor systems studied with a streak camera and spectrotemporal parametrization of fluorescence

A study was conducted to analyze the fluorescence of four semiflexible bridged donor-bridge-acceptor systems using a streak camera system. Experimental results indicated that compounds undergo a photoinduced harpooning procedure where long-range electron transfer establishes an extended charge-transfer species. The species transform into a compact charge-transfer type resulting from Coulombic attraction.