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Organic charge transfer complex based printable biosensor
1New Materials Research Department, International Research Laboratories (IRL), Ciba Geigy Japan Ltd., Takarazuka, Japan.
Biosensors & Bioelectronics
|January 1, 1996
Summary
Researchers developed a printable enzyme electrode using organic charge transfer complex (CTC) crystals for glucose detection. This stable sensor offers a wide linear range and is unaffected by oxygen, showing promise for biosensing applications.
Area of Science:
- Electrochemistry
- Biosensors
- Materials Science
Background:
- Organic charge transfer complexes (CTCs) offer unique electronic properties for biosensor development.
- Printable electrodes provide a cost-effective and versatile platform for sensor fabrication.
- Glucose oxidase (GOD) is a key enzyme for glucose sensing.
Purpose of the Study:
- To prepare a printable enzyme electrode based on CTC crystals for glucose detection.
- To characterize the performance and stability of the developed glucose sensor.
- To investigate the influence of materials on sensor performance.
Main Methods:
- Preparation of CTC crystals by mixing TCNQ and TTF.
- Adsorption of glucose oxidase (GOD) onto CTC crystals.
- Fabrication of a printable paste and electrode assembly.
- Electrochemical measurements in a flow injection system.
Main Results:
- The developed sensor exhibited a high response current and an extended linear detection range (0-100 mM).
- The sensor's response was not affected by the presence of oxygen.
- Excellent sensor stability was observed.
- Binder selection significantly impacted sensor performance.
Conclusions:
- A novel printable enzyme electrode based on CTCs and GOD was successfully developed.
- The sensor demonstrates high sensitivity, stability, and a wide linear range for glucose detection.
- This technology holds potential for practical glucose monitoring applications.