The formation of a high-energy, long-lived radical ion-pair by electron transfer exclusively from the triplet excited state, is demonstrated in a newly synthesized platinum porphyrin-fullerene dyad, in which the porphyrin ring is modified with three electron rich triphenylamine entities. The spin selectivity of the electron transfer leading to the formation of the radical ion-pair is demonstrated using time-resolved optical and EPR spectroscopic techniques.
Bibliographical noteFunding Information:
This work was financially supported by the National Science Foundation (Grant No. 1401188 to FD), startup grants from the University of Minnesota Duluth to PPK, the Natural Sciences and Engineering Research Council Canada (Discovery Grant 2015-04021 to AvdE). Our gratitude goes out to Dr G. Verbeck and the Laboratory for Imaging Mass Spectrometry at the University of North Texas for MALDI-Orbitrap Mass Spectrometry data.
PubMed: MeSH publication types
- Journal Article