Chitosan/polyaniline/graphene oxide-ferrocene thin film and highly-sensitive surface plasmon sensor for glucose detection

This work aims to develop a surface plasmon resonance (SPR) sensor based on Chitosan/Polyaniline/Graphene oxide-Ferrocene (CS/PANI/GOFc) composite thin film for glucose detection. The optimum formulation of the composite has been calculated from experimental refractive index data and using the effec...

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Bibliographic Details
Published in:Optical and quantum electronics 2023-11, Vol.55 (11), Article 948
Main Authors: Nasiri, Hassan, Baghban, Hamed, Teimuri-Mofrad, Reza, Mokhtarzadeh, Ahad
Format: Article
Language:English
Subjects:
Affinity
Characterization and Evaluation of Materials
Chitosan
Computer Communication Networks
Effective medium theory
Electrical Engineering
Glucose
Gold
Graphene
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Polyanilines
Refractivity
Surface plasmon resonance
Thin films
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Summary:This work aims to develop a surface plasmon resonance (SPR) sensor based on Chitosan/Polyaniline/Graphene oxide-Ferrocene (CS/PANI/GOFc) composite thin film for glucose detection. The optimum formulation of the composite has been calculated from experimental refractive index data and using the effective medium theory (EMT). Then, the optimum composite, CS 25%/PANI 25%/GOFc 50%, has been prepared and evaluated in the design of the glucose sensor via modification of the SPR gold chip. Results demonstrate that the linear response of the SPR sensor is in the range of 0.5–100 µM of glucose with a sensitivity of 0.0202° μM −1 . The Langmuir and Sips models have been used to analyze the binding affinity, which represents a higher affinity constant for the composite film compared to the bare gold chip.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-023-05203-y