2026/01/27 by Sara Paniziutti, Maria Vittoria Piras, Annalisa Chiappone +6 · 1 voice
Engineering · Materials Science · #Additive Manufacturing and 3D Printing Technologies #Advanced Sensor and Energy Harvesting Materials #Luminescence and Fluorescent Materials
paper · pdf · doi:10.26434/chemrxiv.10001624/v1
openalex publication_date 2026/01/27 · openalex created_date 2026/01/28 · openalex updated_date 2026/07/27
Volatile organic compounds (VOCs) pose a major environmental and health concern, motivating the development of solid-state optical sensing materials that are both responsive and easily manufacturable. Here we introduce a new family of donor-substituted coumarin thermally activated delayed fluorescent emitters, and embed them within photocurable acrylate resins. These materials retain strong solid-state photoluminescence and can be 3D printed into functional sensing architectures that show reproducible, intensity-based optical responses to chemically diverse VOCs vapors. This work demonstrates how tailored emitter design and 3D printing can be combined to realise versatile VOC-responsive optical materials.