Development of a Glucose Meter Using Boric Acid-Modified Carbon Dots as a Fluorescent Probe

A glucose meter has been developed utilizing boric acid modified carbon dots as a fluorescence probe. Boric acid-modified carbon dots produce varying fluorescence emission with varying glucose concentration in water. Boric acid-modified carbon dots mixed with glucose addition was excited by a violet laser (405 nm), then the emission intensity was detected by a photodetector, to be converted to an electrical signal being an input signal for a microcontroller for glucose concentration measurement. The output voltage of the glucose meter is corresponding to the fluorescence emission measured by using a spectrofluorometer with glucose concentration in the boric acid modified carbon dots.