Novel solid-phase biosensors that utilize ink jet printing of biocompatible sol-gel based inks to create sensor strips are reported herein. Biomolecules and other reagents useful in bioassays to detect, for example, pathogenic microorganisms or toxic substances, are immobilized on a substrate, which can be paper based, by layering these substances between two layers of biomolecule compatible sol gel. The sol gel precursor solutions and solutions of the assay reagents are printed from separate nozzles in a layered approach which avoids clogging of the nozzles by the pre-mature gelling of the sol gel precursor solution. In certain embodiments of the application, a capture agent is used to concentrate a compound to be detected in specific areas on the substrate to facilitate detection.
本文报道了利用喷墨打印
生物相容性溶胶凝胶基墨
水制作传感器条的新型固相
生物传感器。
生物分子和其他有用于
生物测定的试剂,例如用于检测病原微
生物或有毒物质,被固定在基底上(可以是纸张),通过在两层
生物分子相容性溶胶凝胶之间堆叠这些物质来实现。溶胶凝胶前体溶液和
生物测定试剂的溶液从分离的喷嘴中以分层的方式打印,避免了溶胶凝胶前体溶液过早凝胶导致喷嘴堵塞的问题。在本申请的某些实施例中,使用捕获剂将待检化合物浓缩在基底的特定区域,以便于检测。