Carballido Laura, Karbowiak Thomas, Bou-Maroun Elias
Institut Agro, Université Bourgogne Europe, INRAE, UMR PAM, F-21000 Dijon, France.
Polymers (Basel). 2025 Jun 30;17(13):1843. doi: 10.3390/polym17131843.
For their use as chemical sensors, the optimization of the performance of polymeric materials is a critical step in their development for the desired application. The main objective of this work was to identify the best-suited materials to develop a sensor for carbonyl monitoring based on fluorescence. Two categories of materials were compared: acrylate-based materials, obtained by radical polymerization, and silicate-based materials, obtained by sol-gel synthesis. The performances of these materials in terms of yield of polymerization, carbonyl adsorption capacity and fluorescence property were compared. More precisely, the influence of various synthesis parameters such as polymerization type, radical polymerization initiation method, the nature of the functional monomer and the molar ratio of the different reactants was assessed. On the first hand, among acrylate-based materials, the one based on 4-vinylaniline showed better adsorption capacity compared to those based on 3-vinylaniline and 2-vinylaniline. Moreover, materials obtained by UV-polymerization showed a better adsorption capacity compared to those obtained by thermally initiated polymerization. On the other hand, the silicate-based material provided a better synthesis reproducibility, a higher adsorption capacity and a higher fluorescence intensity compared to its acrylate-based counterparts. Finally, contrary to the acrylate-based materials tested, the adsorption capacity and fluorescence properties of silicate-based materials were stable over time.
作为化学传感器使用时，优化聚合物材料的性能是其朝着预期应用方向发展的关键一步。这项工作的主要目标是确定最适合开发基于荧光的羰基监测传感器的材料。比较了两类材料：通过自由基聚合获得的丙烯酸酯基材料和通过溶胶 - 凝胶合成获得的硅酸盐基材料。比较了这些材料在聚合产率、羰基吸附能力和荧光性能方面的表现。更确切地说，评估了各种合成参数的影响，如聚合类型、自由基聚合引发方法、功能单体的性质以及不同反应物的摩尔比。一方面，在丙烯酸酯基材料中，基于4 - 乙烯基苯胺的材料相比基于3 - 乙烯基苯胺和2 - 乙烯基苯胺的材料显示出更好的吸附能力。此外，通过紫外光聚合获得的材料相比热引发聚合获得的材料显示出更好的吸附能力。另一方面，与丙烯酸酯基对应材料相比，硅酸盐基材料具有更好的合成重现性、更高的吸附能力和更高的荧光强度。最后，与测试的丙烯酸酯基材料相反，硅酸盐基材料的吸附能力和荧光性能随时间稳定。
