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Photoreductive Electron Transfers in Nanoarchitectonics Organization Between a Diketopyrrolopyroleplatinum(II)-Containing Organometallic Polymer and Various Electron Acceptors


A platinum(II) polyyne/diketopyrrolopyrole-containing polymer of two different chain lengths, P (short) and P’ (long chain), were prepared in order to elucidate the reasons for the poor photoconversion efficiencies (PCEs) in bulk heterojunction solar cells recently reported in the Journal of Organometallic Chemistry (2019), 894, 1–9, whereas other solar cells using similar platinum(II) polyyne/diketopyrrolopyrole-containing polymers provided significantly better PCEs. Using thermodynamic arguments using electrochemical and spectroscopy data, quenching experiments of the fluorescence band of P using fullerene (PC61BM and PC71BM) nonfullerene (MCzM) acceptors, and testing photochemical stability of P and P’, three possible reasons were found. These reasons are the undetected photochemical instability of similar polymers used by Wong, and the likely inappropriate choice of electron acceptor (PC61BM) in this past investigation.

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This research was funded by the Natural Sciences and Engineering Research Council of Canada, NSERC. The authors warmly thank the french «ministère de l'enseignement supérieur, de la recherche et de l'innovation» which funded Melodie Nos and Malak Qassab PhD as well as Normandie Université, Normandie Région, UNICAEN, ENSICAEN, CNRS, INC3M, ANR, FEDER, Normandy Region, LabEx EMC3 (Grant No. ANR-10-LABX-09-01) and LabEx Synorg (Grant No. ANR-11-LABX-0029) for supporting our research activities. We gratefully acknowledge K. Jarsalé for MS-ASAP-TOF. We also thank Dr. R. Herbinet for the TGA and GPC analyses and Dr. A. Vimont and Pr. A. Travert from the LCS (UMR-CNRS 6506) for UV–visible absorption measurements performed on metallooligomers thin films.

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Investigations, writing the article: GM-P. Synthesis/characterizations, writing the article: MQ. Synthesis/characterizations, investigations, writing the article: AS. Synthesis/characterizations, writing the article: MN. Investigations, writing the article: MD, JH. Synthesis, characterizations, writing the article, funding acquisition: CL. Investigation, writing the article, funding acquisition: LLP. Investigations, writing the original draft, funding acquisition: PDH. All authors read and approved the final manuscript.

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Correspondence to Cyprien Lemouchi, Loïc Le Pluart or Pierre D. Harvey.

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Marineau-Plante, G., Qassab, M., Schlachter, A. et al. Photoreductive Electron Transfers in Nanoarchitectonics Organization Between a Diketopyrrolopyroleplatinum(II)-Containing Organometallic Polymer and Various Electron Acceptors. J Inorg Organomet Polym 32, 1266–1276 (2022).

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  • Diketopyrrolopyrole
  • Organometallic polymers
  • Acceptor
  • Nonfullerene
  • Solar Cell