Simple and Precise Preparation of a Porous Gel for a Colorimetric Glucose Sensor by a Templating Technique

摘要

An inverse opal structure having a periodically ordered interconnecting porosity endows hydrogels with structural colors (i.e., colors that arise from physical optics as opposed chromophores) based on the Bragg diffraction of light. Additionally, the porous hydrogels exhibit a rapid change in volume responding t environmental variations. Consequently, the structural colors of the gels are quickly synchronized with their characteristic volume change. Such gels have the potential for applications in chemical sensing. Herein, we report the precision design and simple preparation of a colorimetric sensor for level of glucose in blood by using structurally colored gel.