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Abbreviations and Symbols
NHS
N-Hydroxysuccinimide
PQQ
Pyrroloquinoline quinone
T1Cu
Type I copper site
T2/3Cu Type II/III copper cluster
Chemical
ABTS
2,2’-Azinobis(3-ethylbenzothiazoline-6-sulfonate
ATP
Adenosine triphosphate
BQ
p-Benzoquinone
DMSO
Dimethyl-sulfoxide
EDC
1-Ethyl-3(3-dimethylaminopropyl)carbodiimide
GA
Glutaraldehyde (1,5-pentanedial)
NHS
N-Hydroxysuccinimide
PEI
Poly(ethylenimine)
PEGDGE Poly(ethylene glycol) diglycidyl ether
PVI
Poly(vinyl imidazole)
PVP
Poly(vinyl pyridine)
Electrode
AuE
Gold electrode
CNT
Carbon nanotube
CPE
Carbon paste electrode
EPGE Edge-oriented pyrolytic graphite electrode
GCE
Glassy carbon electrode
ITO
Indium–tin-oxide electrode
KBE
Ketjen Black-modified electrode
ME
Microdisk electrode
RDE
Rotating disk electrode
SHE
Standard hydrogen electrode
Others
DET
Direct electron transfer
EPR
Electron paramagnetic resonance
LFER Linear free energy relationship