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Updated: May 4, 2026

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Protecting the triplet excited state in sterically congested platinum porphyrin
A G Moiseev1, E A Margulies, J A Schneider
1Department of Chemistry, McGill University, 801 Sherbrooke Str. West, Montreal, H3A 0B8, Canada. dmitrii.perepichka@mcgill.ca.
Abstract:
Platinum tetrakis(2,4,6-triethylphenyl)porphyrin (Pt-1) was synthesized and its structural (X-ray), electrochemical and photophysical properties were fully characterized. Comparative studies of Pt-1 and its unsubstituted analog PtTPP show the effect of sterically congesting ortho-substituents on the dynamics of the triplet excited states. Lowered quenching rates by 3-4 times were observed for Pt-1vs. PtTPP in the presence of oxygen and perylene, and in concentration (self)-quenching experiments.
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