Pablos Jesús L, Vallejos Saúl, Ibeas Saturnino, Muñoz Asunción, Serna Felipe, García Félix C, García José M
Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001 Burgos, Spain.
ACS Macro Lett. 2015 Sep 15;4(9):979-983. doi: 10.1021/acsmacrolett.5b00465. Epub 2015 Aug 25.
We report herein a fluorescence polymer membrane as a film-shaped solid sensory kit for the detection and quantification in water of saccharides, namely, fructose and glucose, and dopamine. The sensory motifs are phenylboronic acids, which are chemically incorporated in the polymer network in the radically initiated bulk polymerization process. The sensory membrane is fluorescent. The interaction of the sensory motifs with dopamine "turn-off" the fluorescence due to a dynamic quenching, while stable complexes are formed with saccharides giving rise to a fluorescence "turn-on". The variation of the fluorescence intensity and the wavelength of the maxima permitted the titration of the species with a detection limit of 3-4 × 10 M. The hydrophilic membrane allowed for the detection in water in spite of the lack of solubility in this medium of the sensory phenylboronic acid derivative monomer.
我们在此报告一种荧光聚合物膜，它是一种薄膜状固体传感试剂盒，用于检测和定量水中的糖类，即果糖和葡萄糖，以及多巴胺。传感基序是苯硼酸，其在自由基引发的本体聚合过程中化学结合到聚合物网络中。传感膜具有荧光性。传感基序与多巴胺的相互作用通过动态猝灭“关闭”荧光，而与糖类形成稳定的络合物导致荧光“开启”。荧光强度和最大波长的变化允许对这些物质进行滴定，检测限为3 - 4×10⁻⁶ M。尽管传感苯硼酸衍生物单体在这种介质中缺乏溶解性，但亲水性膜仍能在水中进行检测。
