Imparting Stability to Organic Photovoltaic Components through Molecular Engineering: Mitigating Reactions with Singlet Oxygen

Abstract: One key challenge in the development of viable organic photovoltaic devices is to design component molecules that do not degrade during combined exposure to oxygen and light. Such molecules should thus remain comparatively unreactive towards singlet molecular oxygen and not act as photosensitizers for the generation of this undesirable species. Here, novel redox‐active chromophores that combine these two properties are presented. By functionalizing indenofluorene‐extended tetrathiafulvalenes (IF‐TTFs) with cyano groups at the indenofluorene core using Pd‐catalyzed cyanation reactions, we find that the reactivity of the exocyclic fulvene carbon‐carbon double bonds towards singlet oxygen is considerably reduced. The new cyano‐functionalized IF‐TTFs were tested in non‐fullerene acceptor based organic photovoltaic proof‐of‐principle devices, revealing enhanced device stability.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Imparting Stability to Organic Photovoltaic Components through Molecular Engineering: Mitigating Reactions with Singlet Oxygen ; day:25 ; month:04 ; year:2023 ; extent:13 ; ChemSusChem ; (25.04.2023) (gesamt 13)

Contributors, Places and Time

• Creator: Henke, Petr ; Rindom, Cecilie ; Kanta Aryal, Um ; Frydenlund Jespersen, Malte ; Broløs, Line ; Mansø, Mads ; Turkovic, Vida ; Madsen, Morten ; Mikkelsen, Kurt V. ; Ogilby, Peter R. ; Brøndsted Nielsen, Mogens

Further information

• DOI: 10.1002/cssc.202202320
• URN: urn:nbn:de:101:1-2023042515595830463848
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 11:02 AM CEST