▎ 摘　　要

Herein, a novel one step synthesis of multicomponent three dimensional polyacrylic acid (PAA) based conducting hydrogel (CH) incorporated with iron phthalocyanine functionalised graphene nanoplatelets (GPL-FePc) is reported. An amperometric glucose biosensor was fabricated by the immobilization of glucose oxidase (GOx) onto the synthesised PAA-VS-PANI/GPL-FePc-CH (where VS-PANI is vinyl substituted polyaniline). Scanning electron microscopy reveals the presence of three dimensional microporous structure with estimated pore size of 19 mu m. The 5-(trifluoromethyl)-2-mercaptopyridine substitution onto FePc enabled the solubility of FePc in water and controls the aggregation of GPL-FePc in the synthesised CH. A sharp peak around 699 nm in UV-visible spectra confirms the presence of incorporated GPL-FePc into CH. Cyclic voltammogram of the synthesised CH biosensor exhibited well defined redox peaks with a Delta E-p value of 0.26 V in Fe(CN) 6 (3-/4-) bench mark solution. The fabricated PAA-VS-PANI/GPL-FePc/GO(x)-CH amperometric biosensor resulted in remarkable detection sensitivity of 18.11 mu A mM(-1) cm(-2) with an average response time of similar to 1 s, linearity from 1 to 20 mM, and low detection limit of 6.4 mu M for the determination of glucose.