Improved selectivity and stability of glucose biosensor based on in situ electropolymerized polyaniline-polyacrylonitrile composite film.
A new type of in situ electropolymerization method was used for electrochemical biosensor design. The biologic film was prepared by in situ electropolymerization of aniline into microporous polyacrylonitrile-coated platinum electrode in the presence of glucose oxidase. The novel glucose biosensor exhibited good selectivity, sensitivity and stability, which showed no apparent loss of activity after 100 consecutive measurements and intermittent usage for 100 days with storage in a phosphate buffer at 4 degrees C. Blood glucose determinations agreed well with standard hospital laboratory analysis. The construction and operational parameters of the biosensor were also optimized.
Xue
Huaiguo
H
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China. chhgxue@yzu.edu.cn
Shen
Zhiquan
Z
Li
Chunmei
C
D000180:Acrylic Resins / Q000737:chemistry*; D000814:Aniline Compounds / Q000737:chemistry*; D015374:Biosensing Techniques / Q000295:instrumentation* / Q000379:methods; D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods*; D004795:Enzyme Stability; D004800:Enzymes, Immobilized / Q000032:analysis / Q000737:chemistry; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005947:Glucose / Q000032:analysis* / Q000737:chemistry; D005949:Glucose Oxidase / Q000032:analysis / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D000180:Acrylic Resins; D000814:Aniline Compounds; D004800:Enzymes, Immobilized; D011108:Polymers; C416807:polyaniline; C010504:polyacrylonitrile; D005949:Glucose Oxidase; D005947:Glucose