Experimental study demonstrates enhanced glucose oxidation using gold-decorated polyaniline derivatives, indicating improved sensitivity and stability for non-enzymatic biosensors.
Key Points
To synthesize and evaluate polyaniline derivatives decorated with atomic-scale gold clusters as electrocatalysts for non-enzymatic glucose detection.
Electrodeposited polyaniline derivatives, including unmodified polyaniline, poly(o-toluidine), and poly(o-methoxyaniline).
Deposited atomic-scale gold clusters onto the polymer matrices using cyclic electrodeposition and evaluated electrocatalytic glucose oxidation with cyclic voltammetry.
All gold-decorated polyaniline derivatives exhibited a wide detection range, low detection limits, good operational stability, and high resistance to chloride ion poisoning.
The Au2/POMA electrode demonstrated the highest performance, achieving a sensitivity of 200.9 µA mM⁻¹ cm⁻², a detection limit of 0.30 mM, and superior selectivity.