Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
CAM, Centre of Advanced Materials, Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 225, 69120 Heidelberg, Germany.
ACS Appl Mater Interfaces. 2016 Aug 10;8(31):20415-21. doi: 10.1021/acsami.6b06462. Epub 2016 Jul 29.
A chemical tongue consisting of 11 elements (four poly(p-aryleneethynylene)s (PAE) at pH 7 and pH 13, and seven electrostatic complexes formed from oppositely charged poly(p-aryleneethynylene)s at pH 7) discriminate 21 benzoic and phenylacetic acid derivatives in aqueous solution. The mechanism of discrimination is the fluorescence modulation of the PAEs, leading to quenching or fluorescence turn-on. The PAEs alone at both pH values and the tongue, consisting of the complexes only, discriminate the 21 acids with 92% (PAEs at pH 7), 95% (PAEs at pH 13), and 99% (complexes at pH 7) reliability after linear discriminant analysis (LDA). A sensor field with all 14 elements, according to LDA, discriminates all of the 21 acids with 100% accuracy.
一种由 11 种元素组成的化学舌（在 pH 值为 7 和 13 时各有 4 种聚对亚苯基乙炔（PAE），以及在 pH 值为 7 时由带相反电荷的聚对亚苯基乙炔形成的 7 种静电复合物）可以区分 21 种在水溶液中的苯甲酸和苯乙酸衍生物。区分的机制是 PAEs 的荧光调制，导致荧光猝灭或荧光开启。在这两种 pH 值下，PAE 本身和仅由复合物组成的舌头都可以通过线性判别分析（LDA）以 92%（pH 值为 7 时的 PAE）、95%（pH 值为 13 时的 PAE）和 99%（pH 值为 7 时的复合物）的可靠性来区分这 21 种酸。根据 LDA，一个包含所有 14 种元素的传感器场可以 100%准确地识别出所有 21 种酸。
