Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.
Centre for Advanced Materials, Im Neuenheimer Feld 225, 69120, Heidelberg, Germany.
Chemistry. 2018 Sep 6;24(50):13102-13105. doi: 10.1002/chem.201803103. Epub 2018 Aug 16.
Fluorescent, water-soluble poly(p-aryleneethynylene)s (PAE) were immobilized on commercially available nylon membranes by using a slot plotter, creating fluorescent, barcode-like sensor strips. Digital imaging by using a standard digital camera, before and after immersion of the strips in buffers of different pH, displays a unique color for each pH value. Statistical evaluation, multivariate analysis of variance (MANOVA) and principal component analysis (PCA), of the acquired data revealed that the immobilized PAEs are superior to the identical fluorophores when dissolved. The pH sensor array discriminates 20 different brands of commercial-cola soft drinks through differences in pH and colorant-PAE interactions.
荧光水溶性聚对亚苯基乙炔（PAE）通过使用狭缝绘图仪固定在市售尼龙膜上，形成荧光条码状传感器条。在将条浸入不同 pH 值的缓冲液之前和之后，使用标准数码相机进行数字成像，为每个 pH 值显示独特的颜色。对获得的数据进行的统计评估、多元方差分析（MANOVA）和主成分分析（PCA）表明，与溶解的荧光团相比，固定化的 PAE 更优越。pH 传感器阵列通过 pH 值和着色剂-PAE 相互作用的差异，区分 20 种不同品牌的商业可乐软饮料。
