Supramolecular Macrocyclic Iodine Adsorbents Enable Photothermally Stable Perovskite Solar Cells.

ABSTRACT: In this study, the design and synthesis of two novel diazapentacene-based macrocycles (M3 and M4) is reported via a one-pot Yamamoto coupling reaction. These macrocycles are constructed by π-extension of a dihydrophenazine core, maintaining its excellent redox activity while offering enlarged cavities and enhanced electron-donating properties. As a result, M3 and M4 exhibit strong electron-rich characteristics and well-defined cavities, enabling their use as efficient iodine adsorbents to mitigate photo-thermal-induced iodine loss and perovskite degradation in solar cells. The macrocycles demonstrate dual-mode iodine capture: physical adsorption through cavity confinement and chemical adsorption via charge-transfer interactions, both of which show excellent reversibility. Addressing the cr

SUBMITTER: Wu Y 

PROVIDER: S-EPMC12822466 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature