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A Siloxane Homopolymer with Interacting Ferrocenes as a New Material for the Preparation of Sensors Based on the Detection of Hydrogen Peroxide
Author(s) -
Garcí Armada M. Pilar,
Losada José,
Cuadrado Isabel,
Alonso Beatriz,
González Blanca,
Casado Carmen M.
Publication year - 2003
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200390134
Subject(s) - glucose oxidase , amperometry , biosensor , hydrogen peroxide , ferrocene , siloxane , electrode , electrochemistry , redox , platinum , polymer , materials science , substrate (aquarium) , chemistry , inorganic chemistry , polymer chemistry , combinatorial chemistry , organic chemistry , nanotechnology , catalysis , oceanography , geology
The electrochemical characterization of a hydrogen peroxide sensor based on a ferrocene‐containing polymer electrochemically deposited onto a platinum electrode is described. The redox polymer consists of a siloxane‐based homopolymer, with pendant electronically communicated ferrocenyl moieties. The electrodes were used as the transducer for glucose and lactate‐sensing enzyme sensors. Amperometric biosensors were prepared by immobilization of glucose oxidase (Gox) or lactate oxidase (Lox) onto these modified electrodes. The steady‐state amperometric response of the sensors is investigated as a function of the applied potential and substrate concentration. Interferences, sensitivity and stability of the sensors were also studied.