Intramolecular Electron Transfer through Poly-Ferrocenyl Glucose Oxidase Conjugates to Carbon Electrodes: 1. Sensor Sensitivity, Selectivity and Longevity

2017 ◽  
Vol 248 ◽  
pp. 578-584 ◽  
Author(s):  
Alan S. Campbell ◽  
Mohammad F. Islam ◽  
Alan J. Russell
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Carbon Electrodes ◽  
Intramolecular Electron Transfer ◽  
Sensor Sensitivity

Intramolecular electron-transfer rates in ferrocene-derivatized glucose oxidase

1993 ◽  
Vol 115 (16) ◽  
pp. 7053-7060 ◽  
Author(s):  
Antonella Badia ◽  
Rina Carlini ◽  
Arthur Fernandez ◽  
Fernando Battaglini ◽  
Susan R. Mikkelsen ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Intramolecular Electron Transfer ◽  
Transfer Rates

scholarly journals Electrochemical Response of Glucose Oxidase Adsorbed on Laser-Induced Graphene

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1893
Author(s):  
Sónia O. Pereira ◽  
Nuno F. Santos ◽  
Alexandre F. Carvalho ◽  
António J. S. Fernandes ◽  
Florinda M. Costa
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Ph Dependence ◽  
High Surface ◽  
High Surface Area ◽  
Cost Effective ◽  
Great Promise ◽  
Glucose Detection ◽  
Half Wave ◽  
Electrochemical Transducers

Carbon-based electrodes have demonstrated great promise as electrochemical transducers in the development of biosensors. More recently, laser-induced graphene (LIG), a graphene derivative, appears as a great candidate due to its superior electron transfer characteristics, high surface area and simplicity in its synthesis. The continuous interest in the development of cost-effective, more stable and reliable biosensors for glucose detection make them the most studied and explored within the academic and industry community. In this work, the electrochemistry of glucose oxidase (GOx) adsorbed on LIG electrodes is studied in detail. In addition to the well-known electroactivity of free flavin adenine dinucleotide (FAD), the cofactor of GOx, at the expected half-wave potential of −0.490 V vs. Ag/AgCl (1 M KCl), a new well-defined redox pair at 0.155 V is observed and shown to be related to LIG/GOx interaction. A systematic study was undertaken in order to understand the origin of this activity, including scan rate and pH dependence, along with glucose detection tests. Two protons and two electrons are involved in this reaction, which is shown to be sensitive to the concentration of glucose, restraining its origin to the electron transfer from FAD in the active site of GOx to the electrode via direct or mediated by quinone derivatives acting as mediators.

Intramolecular Electron Transfer Mediated by a Tetrathiafulvalene Bridge in a Purely Organic Mixed-Valence System

2003 ◽  
Vol 42 (24) ◽  
pp. 2765-2768 ◽  
Author(s):  
Nicolas Gautier ◽  
Frédéric Dumur ◽  
Vega Lloveras ◽  
José Vidal-Gancedo ◽  
Jaume Veciana ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Mixed Valence ◽  
Intramolecular Electron Transfer

scholarly journals Solvent-induced on/off switching of intramolecular electron transfer in a cyanide-bridged trigonal bipyramidal complex

2016 ◽  
Vol 45 (43) ◽  
pp. 17104-17107 ◽  
Author(s):  
Rong-Jia Wei ◽  
Ryohei Nakahara ◽  
Jamie M. Cameron ◽  
Graham N. Newton ◽  
Takuya Shiga ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Spin Transition ◽  
Intramolecular Electron Transfer ◽  
Thermally Induced ◽  
Trigonal Bipyramidal ◽  
Transition Behaviour

A cyanide-bridged trigonal bipyramidal [Co3Fe2] cluster shows solvent-driven reversible on/off switching of its thermally induced electron-transfer-coupled spin transition behaviour.

Sign in / Sign up

Export Citation Format

Share Document