Behrent, Arne and Borggraefe, Veronika and Baeumner, Antje J. (2023) Laser-induced graphene trending in biosensors: understanding electrode shelf-life of this highly porous material. ANALYTICAL AND BIOANALYTICAL CHEMISTRY. ISSN 1618-2642, 1618-2650
Full text not available from this repository. (Request a copy)Abstract
Laser-induced graphene (LIG) has received much attention in recent years as a possible transducer material for electroanalytical sensors. Its simplicity of fabrication and good electrochemical performance are typically highlighted. However, we found that unmodified and untreated LIG electrodes had a limited shelf-life for certain electroanalytical applications, likely due to the adsorption of adventitious hydrocarbons from the storage environment. Electrode responses did not change immediately after exposure to ambient conditions but over longer periods of time, probably due to the immense specific surface area of the LIG material. LIG shelf-life is seldomly discussed prominently in the literature, yet overall trends for solutions to this challenge can be identified. Such findings from the literature regarding the long-term storage stability of LIG electrodes, pure and modified, are discussed here along with explanations for likely protective mechanisms. Specifically, applying a protective coating on LIG electrodes after manufacture is possibly the easiest method to preserve electrode functionality and should be identified as a trend for well-performing LIG electrodes in the future. Furthermore, suggested influences of the accompanying LIG microstructure/morphology on electrode characteristics are evaluated.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | POLYIMIDE; TRANSITIONS; Laser-induced graphene; Electrochemical biosensor; Reproducibility; Shelf-life; Stability; Morphology |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Chemo- und Biosensorik (Prof. Antje J. Bäumner, formerly Prof. Wolfbeis) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Mar 2024 07:25 |
| Last Modified: | 08 Mar 2024 07:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/59344 |
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