Synthesis and application of hypochlorite ratiometric fluorescence probe based on cellulose

Cellulose is the most abundant natural polymer with good biocompatibility and easy modification characteristics. In this paper, a novel cellulose fluorescence probe CNS for detecting ClO^- was prepared by modifying microcrystalline cellulose (MCC). The fluorescence detection results indicate that CNS exhibits a highly specific "ratiometric" and "colorimetric" fluorescence response to ClO^-. In the presence of ClO^-, the fluorescence color changes from green to cyan. In addition, the color of the solution changes from yellow to colorless, which can be observed with the "naked eye". Considering the good selectivity and anti-interference ability of CNS, the probe can be used for the detection of ClO^- in real water samples. Importantly, CNS composite films and test papers were prepared and showed practicability in the detection of ClO^-, highlighting its broad application potentials.