Publication date: 15th December 2025
In this report, we will discuss the results of our systematic study of a broad panel (>250 structures) of conjugated polymers [1] and small molecules, including fullerene derivatives [2] and non-fullerene acceptors (NFAs), in the context of their stability with respect to light and gamma rays. Important correlations between the materials’ stability, their chemical compositions and molecular structures will be presented. The first prognostic model enabling an accurate prediction of photostability of arbitrary chosen conjugated polymer structures will be introduced, and the guidelines for rational design of new absorber materials for stable and efficient organic photovoltaics will be outlined.
[1] P. M. Kuznetsov, E. A. Komissarova, S. A. Kuklin, T. N. Khokhlova, P. G. Novkina, R. M. Khisamov, I. S. Zhidkov, O. A. Kraevaya, A. F. Shestakov, P. A. Troshin. “Unraveling the relationship between the UV photostability of conjugated polymers and their molecular structures: triplet states matter!”. Adv. Energy Mater., 2025, e01179. DOI: 10.1002/aenm.202501179
[2] I. V. Martynov, A. V. Mumyatov, L. G. Gutsev, L. N. Inasaridze, A. V. Kulikov, P. A. Troshin. “The Mechanism of the Photodimerization of [60]Fullerene Derivatives: It is Still a Charge Separation Followed by a Back Transfer!”. Adv. Funct. Mater., 2023, 33, 2301637. DOI: 10.1002/adfm.202301637
This work was supported by Russian Science Foundation (project 25-13-00235).
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