Exclusive triplet electron transfer leading to long-lived radical ion-pair formation in an electron rich platinum porphyrin covalently linked to fullerene dyad

Dili R. Subedi; Habtom B. Gobeze; Yuri E. Kandrashkin; Prashanth K. Poddutoori; Art van der Est; Francis D'Souza

doi:10.1039/d0cc02007a

Exclusive triplet electron transfer leading to long-lived radical ion-pair formation in an electron rich platinum porphyrin covalently linked to fullerene dyad

Dili R. Subedi, Habtom B. Gobeze, Yuri E. Kandrashkin, Prashanth K. Poddutoori, Art van der Est, Francis D'Souza

Chemistry & Biochemistry

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Abstract

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.

Original language	English (US)
Pages (from-to)	6058-6061
Number of pages	4
Journal	Chemical Communications
Volume	56
Issue number	45
DOIs	https://doi.org/10.1039/d0cc02007a
State	Published - Jun 7 2020

Bibliographical note

Funding 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.

Publisher Copyright:
© The Royal Society of Chemistry 2020.

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title = "Exclusive triplet electron transfer leading to long-lived radical ion-pair formation in an electron rich platinum porphyrin covalently linked to fullerene dyad",

abstract = "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.",

author = "Subedi, {Dili R.} and Gobeze, {Habtom B.} and Kandrashkin, {Yuri E.} and Poddutoori, {Prashanth K.} and {van der Est}, Art and Francis D'Souza",

note = "Funding 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. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2020.",

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doi = "10.1039/d0cc02007a",

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AU - Subedi, Dili R.

AU - Gobeze, Habtom B.

AU - Kandrashkin, Yuri E.

AU - Poddutoori, Prashanth K.

AU - van der Est, Art

AU - D'Souza, Francis

N1 - Funding 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. Publisher Copyright: © The Royal Society of Chemistry 2020.

PY - 2020/6/7

Y1 - 2020/6/7

N2 - 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.

AB - 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.

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Exclusive triplet electron transfer leading to long-lived radical ion-pair formation in an electron rich platinum porphyrin covalently linked to fullerene dyad

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