Enhancement of Electrocatalytic Activity upon the Addition of Single Wall Carbon Nanotube to the Redox-hydrogel-based Glucose Sensor

Kim, Suk-Joon; Quan, Yuzhong; Ha, Eunhyeon; Shin, Woonsup

doi:10.33961/jecst.2020.01039

Cited by 2 publications

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References 29 publications

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“…Then, an appropriate amount of the mixed solution was drop-coated onto the sensing layer and dried for one day. The thickness of the over-coated layer made by drocoating 5 uL of the solution is estimated to be 4 um [24].…”

Section: Fabrication Of Glucose Sensormentioning

confidence: 99%

Glucose Diffusion Limiting Membrane Based on Polyethyleneimine (PEI) Hydrogel for the Stabilization of Glucose Sensor

Kim

Shin

2021

J. Electrochem. Sci. Technol

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Commercially available continuous glucose sensors require the operation stability for more than two weeks. Typically, the sensor comprises a sensing layer and an over-coating layer for the stable operation inside the body. In the sensing layer, enzymes and mediators are cross-linked together for the effective sensing of the glucose. The over-coating layer limits the flux of glucose and works as a biocompatible layer to the body fluids. Here, we report the simple preparation of the fluxlimiting layer by the condensation of polyethyleneimine (PEI), tri-epoxide linker, and trimethylolpropane triglycidyl ether (PTGE). The sensor is constructed by a layer-by-layer drop-coating of the sensing layer containing glucose dehydrogenase and the PEI-derived blocking layer. It is stable for more than 14 days, which is enough for the sensor in the continuous monitor glucose monitoring (CGM) system.

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Section: Fabrication Of Glucose Sensormentioning

confidence: 99%