ArticleMikrochimica acta2026
From vision to precision: molecular nanocage-enabled photoelectrochemical-fluorescent dual-mode PFOS sensing platform.
Article in Mikrochimica acta, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Perfluorooctanesulfonic acid (PFOS), a persistent environmental pollutant, poses significant risks to ecosystems and human health, creating an urgent need for rapid and reliable on-site detection. We present a dual-mode sensing platform integrating visual fluorescence readout with quantitative photoelectrochemical (PEC) analysis, constructed by assembling metal-coordinated molecular nanocages (MN) onto a TiO2 photoelectrode. The MN enables rapid, instrument-free visual identification of PFOS through fluorescence changes, providing straightforward qualitative screening. Meanwhile, the TiO₂/MN interface delivers a sensitive and linear PEC response, enabling highly accurate PFOS quantification with a low limit of detection (~0.16 nM) across complex matrices. The complementary nature of the two modes offers internal signal cross-validation, markedly enhancing detection reliability. Furthermore, the reversible PFOS–MN interaction allows simple regeneration of the sensing interface, supporting sustainable and repeated operation. This dual-mode strategy provides a practical, robust, and field-friendly solution for PFOS monitoring in environmental waters.
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