Construction of a Miniaturized Monosaccharide Detection System Based on Measuring Electric Current and Testing Its Performance Using a Bodipy Fluorescent Dye

In this study, a low-cost, miniaturized fluorescence-based measurement system for optical biosensors has been developed. A 3D-printed setup with a blue light-emitting diode (LED) and photodiode was used for electrical detection and monitoring of fluorescence light intensity. The system was used to explore the fluorescence quenching of boron-dipyrromethene (Bodipy) in the presence of boronic acid functionalized benzyl viologen (o-BBV) to develop a monosaccharide detection platform by studying at different pHs and temperatures. The results showed that the system has potential for further development and optimization. This study provides a proof-of-concept for a low-cost and miniaturized optical biosensor for monosaccharides.