Interfullerene Electronic Interactions and Excited-State Dynamics in Fullerene Dumbbell Conjugates.
J Am Chem Soc
; 145(26): 14190-14195, 2023 Jul 05.
Article
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| MEDLINE
| ID: mdl-37310385
ABSTRACT
Several dumbbell conjugates featuring M3N@Ih-C80 (M = Sc, Y) and C60 were prepared to systematically investigate interfullerene electronic interactions and excited state dynamics. From electrochemical investigations, we concluded that the redox potentials of our M3N@Ih-C80 (M = Sc, Y) dumbbells depend largely on the interfullerene electronic interactions. Assisted by DFT calculation, the unique role of metal atoms was highlighted. Most importantly, ultrafast spectroscopy experiments revealed symmetry-breaking charge separation in Sc3N@C80-dumbbell to yield an unprecedented (Sc3N@C80)â¢+-(Sc3N@C80)â¢- charge separated state. This is, to the best of our knowledge, the first time that symmetry-breaking charge separation following photoexcitation is corroborated in a fullerene system. As such, our work shed light on the significance of interfullerene electronic interactions and their uniqueness for modulating excited state properties.
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MEDLINE
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En
Revista:
J Am Chem Soc
Año:
2023
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Article
País de afiliación:
China