Interplay between singlet and triplet excited states in a conformationally locked donor–acceptor dyad

Mikhail A. Filatov, Fabian Etzold, Dominik Gehrig, Frédéric Laquai, Dmitri Busko, Katharina Landfester, Stanislav Baluschev

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The synthesis and photophysical characterization of a palladium(II) porphyrin – anthracene dyad bridged via short and conformationally rigid bicyclo[2.2.2]octadiene spacer were achieved. A spectroscopic investigation of the prepared molecule in solution has been undertaken to study electronic energy transfer in excited singlet and triplet states between the anthracene and porphyrin units. By using steady-state and time-resolved photoluminescence spectroscopy it was shown that excitation of the singlet excited state of the anthracene leads to energy transfer to the lower-lying singlet state of porphyrin. Alternatively, excitation of the porphyrin followed by intersystem crossing to the triplet state leads to very fast energy transfer to the triplet state of anthracene. The rate of this energy transfer has been determined by transient absorption spectroscopy. Comparative studies of the dynamics of triplet excited states of the dyad and reference palladium octaethylporphyrin (PdOEP) have been performed.
Original languageEnglish (US)
Pages (from-to)19207-19217
Number of pages11
JournalDalton Trans.
Volume44
Issue number44
DOIs
StatePublished - 2015

Fingerprint Dive into the research topics of 'Interplay between singlet and triplet excited states in a conformationally locked donor–acceptor dyad'. Together they form a unique fingerprint.

Cite this