NDLI: Studies on the construction and operation of miniaturized potentiometric biosensors

Content Provider	Springer Nature Link
Author	Kopińska, Kamila Pietrzak, Mariusz Maliwska, Elżbieta
Copyright Year	2013
Abstract	This study aims at presenting the studies on construction and operation of solid-state miniaturized biosensor with potentiometric detection. The performance of sensors with layer which consisted of mixture of aliphatic thiols and thiols containing ferrocene terminal groups or the conductive polymer layer obtained by electrochemical polymerization of 3,4-ethylenedioxythiophene was compared. Both of the applied modifications proved to significantly affect the sensors’ performance, influencing the stability of their working parameters in time. Wherein, the greatest improvement in planar sensors’ operating parameters was achieved by applying conductive polymer layer. Subsequently, a system creating universal platform for the construction of a biosensor, dedicated to almost any analyte determination, depending on the composition of the affinity proteins used in the receptor layer, was developed. For the construction of proposed biosensor, alkaline phosphatase was chosen as a model enzyme, assuming either the role of direct component of receptor layer or a label in affinity biosensor. The affinity biosensor structure was characterized by a sandwich assay, using a highly specific interaction occurring between streptavidin and biotin. Aside from optimization of various components of the constructed sensor, the most adequate analysis conditions were designated in the course of presented research. As it turned out, the composition of buffer solution used has a significant influence on the activity of the applied enzyme as well as on the working parameters of the sensor. Tris buffer was, therefore, found as the one ensuring the best performance of sensors utilizing alkaline phosphatase.
Starting Page	1665
Ending Page	1675
Page Count	11
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	17
Issue Number	6
e-ISSN	14330768
Language	English
Publisher	Springer-Verlag
Publisher Date	2013-02-14
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biosensor Potentiometry Alkaline phosphatase Intermediate layer Physical Chemistry Electrochemistry Energy Storage Characterization and Evaluation of Materials Analytical Chemistry Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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