Herein, novel fluorescein mono-acrylate (Flu-Ac) was synthesized and copolymerized with methyl methacrylate and glycidyl methacrylate to produce epoxy-functionalized latex nanoparticles. Fluorescent cellulose paper was then obtained by dip-coating and subsequent heat treatment. Synthesis of Flu-Ac, its incorporation efficiency into the epoxy-functionalized nanoparticles (almost 92 %), spherical morphology of the particles and their sizes (89–93 nm), and optical properties were studied comprehensively. SEM micrographs showed effective wetting of the cellulose fibers with uniform diffusion and deposition of the prepared functional nanoparticles through the establishment of physical and chemical interactions. Visual and spectroscopic emission intensity of the impregnated cellulose paper (λ_max of 529 nm) were enhanced by increasing pH of the solution (from 2 to14) as a consequence of the transformation of cationic fluorescein to its neutral and anionic form. These observations depicted that such fluorescent cellulose substrates could be exploited in reusable indicators with good ability for sensing pH of solutions with diverse acidity or basicity.

在此，合成了新型荧光素单丙烯酸酯（Flu-Ac），并与甲基丙烯酸甲酯和甲基丙烯酸缩水甘油酯共聚以制备环氧官能化乳胶纳米粒子。然后通过浸涂和随后的热处理获得荧光纤维素纸。综合研究了 Flu-Ac 的合成、其在环氧官能化纳米颗粒中的掺入效率（几乎 92%）、颗粒的球形形态及其尺寸（89-93 nm）以及光学性质。SEM显微照片显示，通过建立物理和化学相互作用，纤维素纤维有效润湿，制备的功能性纳米颗粒均匀扩散和沉积。浸渍纤维素纸的视觉和光谱发射强度（λ _max由于阳离子荧光素转变为中性和阴离子形式，溶液的 pH 值（从 2 到 14）提高了 529 nm）。这些观察表明，这种荧光纤维素底物可用于可重复使用的指示剂，具有良好的检测具有不同酸度或碱度的溶液的 pH 值的能力。