Novel Dual-Mode Fluorescent Sensor for Detecting Chlorpyrifos and Cu(II) - Punrada Thadatontichok; Chalisa Pinthong; Nirawit Kaewnok; Jitnapa Sirirak; Nichanan Thepsuparungsikul; Nantanit Wanichacheva; Krit Setthakarn (ACS Omega)