A sensor element suitable for colorimetric detection of anions in a sample, the sensor element comprising a water insoluble polymeric hydrogel having a polymer network defining a water permeable microvoid network, and an anion recognition dye (receptor) incorporated into the polymeric hydrogel. The anion recognition dye has a general formula (I),
Wherein R1, R2, R3 and R4 are each, independently, selected from H or an optionally substituted group consisting of lower alkyl, allyl, aryl, thioureas, urea, amide, ether, and X is S or O. An anion detection probe comprising a support that incorporates the sensor element and provided in the form of a dip-stick is also disclosed.
一种适用于对样品中阴离子进行比色检测的传感器元件,该传感器元件包括一种不溶于
水的聚合物
水凝胶,该聚合物
水凝胶具有一个聚合物网络,该聚合物网络定义了一个可渗透
水的微空网络,以及一种与聚合物
水凝胶结合在一起的阴离子识别
染料(受体)。阴离子识别
染料的通式为 (I)、
其中,R1、R2、R3 和 R4 各自独立地选自 H 或由低级烷基、烯丙基、芳基、
硫脲类、
脲类、酰胺类、
醚类组成的任选取代基团,X 为 S 或 O。还公开了一种阴离子检测探针,该探针由包含传感器元件并以浸渍棒形式提供的支撑物组成。