Carbon cloth as a 3D matrix for growth of enzyme mediating films of 1,10-phenanthroline-5,6-dione
Abstract
Encapsulation of the heterocyclic quinoid species, 1,10-phenanthroline-5,6-dione (PDon) was achieved via an enzymatically assisted electrodeposition approach on carbon transducers. The reagentless glucose biosensing methodology took advantage of a layered biopolymer with biocompatible conducting bioink formulation. The PDon mediating layer served as a proton and electron acceptor for FADH2 glucose oxidase cofactor regeneration. Scanning electron microscopy revealed interesting microstructures on both glassy carbon (GC) and woven fabric carbon cloth (CC) substrates while electrochemical film studies established surface confined behaviour and the expected proton coupled electron transfer process. Quantitative glucose investigations involved differential pulse voltammetry (DPV) and constant potential approaches in phosphate buffer (pH 6.0 and 7.4). DPV studies resulted in sensitivity 1.00 × 10–7 ± 4.27 × 10–9 A mmol−1 L (2.0–4.0 mmol L−1) and 1.20 × 10–5 ± 8.64 × 10–7 A mmol−1 L (1.0–4.95 mmol L−1) for GC and CC electrodes respectively, with the latter resulting in limit of detection of 0.55 ± 0.30 mmol L−1 and apparent Michaelis Menton constant, Km′ = 0.79 ± 0.01 mmol L−1. The redox behaviour of the CC transducer was found to be intact following > 10 months at 4 °C.
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BibTeX
@article{newman2026carbon,
title = {{Carbon cloth as a 3D matrix for growth of enzyme mediating films of 1,10-phenanthroline-5,6-dione}},
author = {Aoife Newman and Glen George and Oliwier Dulawa and Paulo Henrique M. Buzzetti and Michael Holzinger and Eithne Dempsey},
journal = {Sensors and Actuators Reports},
year = {2026},
month = sep,
doi = {10.1016/j.snr.2026.100509},
url = {https://hal.science/hal-05800227v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Carbon cloth as a 3D matrix for growth of enzyme mediating films of 1,10-phenanthroline-5,6-dione
AU - Aoife Newman
AU - Glen George
AU - Oliwier Dulawa
AU - Paulo Henrique M. Buzzetti
AU - Michael Holzinger
AU - Eithne Dempsey
PY - 2026
DA - 2026/09/13
JO - Sensors and Actuators Reports
DO - 10.1016/j.snr.2026.100509
UR - https://hal.science/hal-05800227v1
AB - Encapsulation of the heterocyclic quinoid species, 1,10-phenanthroline-5,6-dione (PDon) was achieved via an enzymatically assisted electrodeposition approach on carbon transducers. The reagentless glucose biosensing methodology took advantage of a layered biopolymer with biocompatible conducting bioink formulation. The PDon mediating layer served as a proton and electron acceptor for FADH2 glucose oxidase cofactor regeneration. Scanning electron microscopy revealed interesting microstructures on both glassy carbon (GC) and woven fabric carbon cloth (CC) substrates while electrochemical film studies established surface confined behaviour and the expected proton coupled electron transfer process. Quantitative glucose investigations involved differential pulse voltammetry (DPV) and constant potential approaches in phosphate buffer (pH 6.0 and 7.4). DPV studies resulted in sensitivity 1.00 × 10–7 ± 4.27 × 10–9 A mmol−1 L (2.0–4.0 mmol L−1) and 1.20 × 10–5 ± 8.64 × 10–7 A mmol−1 L (1.0–4.95 mmol L−1) for GC and CC electrodes respectively, with the latter resulting in limit of detection of 0.55 ± 0.30 mmol L−1 and apparent Michaelis Menton constant, Km′ = 0.79 ± 0.01 mmol L−1. The redox behaviour of the CC transducer was found to be intact following > 10 months at 4 °C.
SN - 2666-0539
ER -