In Situ Grown Metal-Organic Frameworks with Diverse Ligands on Nanofibrous Sheet for Modulating Triboelectric Performance #MMPMID41389011
Kim CR; Han JH; Kim MJ; Lee D; Shin N; Kim SN; Ji HB; Min CH; Lee YH; Sun JY; Choy YB
ACS Appl Mater Interfaces 2025[Dec]; ? (?): ? PMID41389011show ga
In this study, we developed a triboelectric material by growing metal-organic frameworks (MOFs) in situ on electrospun polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) nanofiber sheets. By varying the ligand chemistry, using electron-donating (-NH(2)) or electron-withdrawing (-COOH, -NO(2)) groups, we modulated the triboelectric properties without altering the nanofiber morphology or beta-phase crystallinity. Structural and surface characterizations confirmed in situ grown MOF integration and ligand-dependent modulation of surface properties. When applied to triboelectric nanogenerators (TENGs), the materials exhibited output responses modulated by ligand type, with the NO(2)-functionalized MOF achieving the highest increase, producing a maximum peak-to-peak voltage of approximately 130 V that remained stable over 30,000 contact-separation cycles. These findings demonstrate a reliable, ligand-tunable strategy for controlling interfacial properties, emphasizing the dominant role of surface electronic characteristics in determining triboelectric performance.
ACS+Appl+Mater+Interfaces 2025 ; ? (?): ?
