title: Protecting the triplet excited state in sterically congested platinum porphyrin.
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.
authors: Department of Chemistry, McGill University, 801 Sherbrooke Str. West, Montreal, H3A 0B8, Canada. dmitrii.perepichka@mcgill.ca.
authors: A G
authors: AG
authors: Moiseev
authors: E A
authors: EA
authors: Margulies
authors: J A
authors: JA
authors: Schneider
authors: F
authors: F
authors: Bélanger-Gariépy
authors: D F
authors: DF
authors: Perepichka
mesh_terms: D000042:Absorption; D004563:Electrochemistry; D008665:Metalloporphyrins / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D010100:Oxygen / Q000737:chemistry; D010569:Perylene / Q000737:chemistry; D055668:Photochemical Processes; D010984:Platinum / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry*
chemical_list: D008665:Metalloporphyrins; D011166:Porphyrins; D010984:Platinum; D010569:Perylene; D010100:Oxygen