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Exploring the Association of Electron-Donating Corroles with Phthalocyanines as Electron Acceptors.


ABSTRACT: Electron-donating corroles (Cor) were integrated with electron-accepting phthalocyanines (Pc) to afford two different non-covalent Cor ⋅ Pc systems. At the forefront was the coordination between a 10-meso-pyridine Cor and a ZnPc. The complexation was corroborated in a combination of NMR, absorption, and fluorescence assays, and revealed association with binding constants as high as 106  m-1 . Steady-state and time-resolved spectroscopies evidenced that regardless of exciting Cor or Pc, the charge-separated state evolved efficiently in both cases, followed by a slow charge-recombination to reinstate the ground state. The introduction of non-covalent linkages between Cor and Pc induces sizeable differences in the context of light harvesting and transfer of charges when compared with covalently linked Cor-Pc conjugates.

SUBMITTER: Platzer B 

PROVIDER: S-EPMC9306480 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature

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Exploring the Association of Electron-Donating Corroles with Phthalocyanines as Electron Acceptors.

Platzer Benedikt B   Berionni Berna Beatrice B   Bischetti Martina M   Cicero Daniel O DO   Paolesse Roberto R   Nardis Sara S   Torres Tomás T   Guldi Dirk M DM  

Chemistry (Weinheim an der Bergstrasse, Germany) 20220210 13


Electron-donating corroles (Cor) were integrated with electron-accepting phthalocyanines (Pc) to afford two different non-covalent Cor ⋅ Pc systems. At the forefront was the coordination between a 10-meso-pyridine Cor and a ZnPc. The complexation was corroborated in a combination of NMR, absorption, and fluorescence assays, and revealed association with binding constants as high as 10<sup>6</sup>  m<sup>-1</sup> . Steady-state and time-resolved spectroscopies evidenced that regardless of excitin  ...[more]

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