Ultrafast Dynamics Group
Frédéric Laquai's Group

BODIPY-pyrene and perylene dyads

BODIPY-pyrene and perylene dyads as heavy atom-free singlet oxygen sensitizers

BODIPY-pyrene and perylene dyads as heavy atom-free singlet oxygen sensitizers​

M.A. Filatov, S. Karuthedath, P.M. Polestshuk, S. Callaghan, T. Wiesner, K.J. Flanagan, F. Laquai and M.O. Senge
ChemPhotoChem 2018, DOI: 10.1002/cptc.201800020
M.A. Filatov, S. Karuthedath, P.M. Polestshuk, S. Callaghan, T. Wiesner, K.J. Flanagan, F. Laquai and M.O. Senge
charge transfer, heavy-atom-free sensitizer, photo- induced electron transfer, singlet oxygen, triplet excited state
2018

​Dyads combining BODIPY as an electron acceptor and pyrene or perylene as electron donor subunits were prepared and their photophysical properties were studied by steady‐state and transient spectroscopy. Depending on the structure of the subunits and the polarity of the media, the dyads show either bright fluorescence or photo‐induced electron transfer (PeT) in solution. Charge‐transfer (CT) states formed as a result of PeT and were found to yield triplet excited states of the BODIPY. In the presence of molecular oxygen, the dyads sensitize singlet oxygen (1O2) with quantum yields of up to 0.75.