Fluorescence and scattering based dual-optical signals ratiometric sensing and logic gate device for acetylcholinesterase activity assay

Acetylcholinesterase (AChE) plays a crucial role in regulating the levels of the neurotransmitters in organisms. In this study, a dual-optical signals ratiometric sensing system based on fluorescence and scattered light was constructed by using silicon quantum dots (SiQDs) and MnO2 nanosheets for AChE activity assay. The two independent signals of fluorescence and scattering can be collected at the same excitation wavelength, which not only...