PQQ-sGDH bioelectrodes based on Os-complex modified electrodeposition polymers and carbon nanotubes
- Graphite electrodes were modified with specifically designed Os-complex modified electrodeposition polymers exhibiting a formal potential of the polymer-bound complex of about 0 to 20 mV (vs. Ag/AgCl/3 M KCl) which is only about 100 mV anodic of the formal potential of pyrroloquinoline quinone (PQQ) in PQQ-dependent glucose dehydrogenase (PQQ-GDH). The efficiency of wiring the polymer-entrapped PQQ-GDH was dependent on the nature of the polymer backbone, the crosslinking with bifunctional crosslinkers and the co-entrapment of multi-walled carbon nanotubes. Due to the limited long-term stability a new polymer synthesis strategy was adapted using the same Os-complex but providing enhanced crosslinking capabilities by introducing epoxide functions at the polymer backbone. Related bioelectrodes showed enhanced glucose-dependent current and a stability of at least 3 days of continuous operation.
| Author: | Xingxing ChenGND, Minling ShaoGND, Sascha PöllerORCiDGND, Dmitrii GuschinGND, Piyanut PinyouGND, Wolfgang SchuhmannORCiDGND |
|---|---|
| URN: | urn:nbn:de:hbz:294-87860 |
| DOI: | https://doi.org/10.1149/2.0111413jes |
| Parent Title (English): | Journal of the Electrochemical Society |
| Publisher: | IOP Publishing |
| Place of publication: | Bristol |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2022/03/28 |
| Date of first Publication: | 2014/10/29 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Volume: | 161 |
| Issue: | 13 |
| First Page: | H3058 |
| Last Page: | H3063 |
| Institutes/Facilities: | Zentrum für Elektrochemie |
| Lehrstuhl für Analytische Chemie | |
| open_access (DINI-Set): | open_access |
| faculties: | Fakultät für Chemie und Biochemie |
| Licence (English): |  Creative Commons - CC BY-NC-ND 4.0 - Attribution-NonCommercial-NoDerivatives 4.0 International |
