6 results about "Electron transfer mediator" patented technology

The present invention relates to: a transition metal complex having a bidentate ligand including a pyrazole, a triazole, a tetrazole, an oxadiazole, or a thiadiazole, etc., wherein the transition metal complex is useful as an electron transfer mediator in a continuous blood glucose monitor, etc., for measuring a blood glucose concentration; and a redox polymer comprising the same. The transition metal complex and the redox polymer can exchange electrons quickly and smoothly between an enzyme and an electrode, and thus can be effectively used in a continuous blood glucose biosensor.

The present invention provides a biosensor for detecting glucose in saliva by using a saliva glucose measurement device, the biosensor comprising: an electrically insulated substrate; a plurality of electrodes disposed on the substrate and including a working electrode and a reference electrode for detecting glucose in the saliva; and a reagent layer disposed on the plurality of electrodes, wherein the reagent layer is disposed in a saliva inflow path which is located in the biosensor and configured to allow the saliva to flow thereinto. The reagent layer includes glucose dehydrogenase (GDH) and an electron transfer mediator, the saliva glucose measurement device is configured to apply a voltage to the working electrode and the reference electrode, the working electrode and the reference electrode are configured to transmit, to the saliva glucose measurement device, a current signal generated due to an oxidation / reduction reaction between the glucose dehydrogenase and the glucose in the saliva according to the applied voltage, and the value of the applied voltage is included in a numerical range of 150 mV to 300 mV.

The invention relates to a method for preparing a fuel cell by taking an electron transfer mediator loaded metal organic framework material as an anode modification material. The metal organic framework material is a porous coordination high-molecular polymer crystal formed by coordination of metal ions and organic ligands. Many metal organic framework materials are poor in conductivity, and electron transfer and substance transfer between active sites of the metal organic framework materials and catalyzed reactants are difficult in the aspects of stereo, distance and the like. Through compounding of the metal organic framework material and the electron transfer mediator, electron transfer and substance transport capabilities between active sites of the metal organic framework material and a catalyzed reactant are enhanced, and the catalytic performance of the metal organic framework material can be greatly enhanced. The metal organic framework material loaded with the electron transfer mediator is used as an anode modification material, the metal organic framework material loaded with the electron transfer mediator is used as a catalyst, oxidation of target fuel is catalyzed, the fuel cell is constructed, and the method has the advantages of being easy to operate, simple in procedure and the like.

The present invention relates to a novel organic electron-transfer mediator showing an excellent oxidation-reduction potential and a device such as an electrochemical biosensor having improved performance comprising the same.

The invention relates to the field of pharmaceutical chemical engineering and biological catalysis, in particular to an electrochemical-enzyme coupling catalysis preparation process for a Parkinson's disease treatment drug intermediate, the process adopts a multi-stage structure coupling system, and the system comprises an electro-catalysis reaction zone, a buffer intermediate zone, an enzyme catalysis reaction zone and a programmable logic control system. Wherein the electrochemical reaction area is used for regenerating an electron transfer mediator; the buffer middle area is used for adjusting the pH and temperature of the system, removing bubbles and removing by-products; the enzyme catalysis reaction zone is used for converting a substrate into a target intermediate; and the programmable logic control system adjusts the reaction in real time based on the monitoring result. The invention aims to realize continuous and efficient electrochemical-enzyme coupled catalytic reaction so as to prepare a target product.

The invention discloses a biotoxicity sensor of calcium-magnesium synergetic cross-linked sodium alginate and a preparation method, and belongs to the field of biosensing, the sensor comprises a reactor, a working electrode fixed with electroactive microorganisms, a counter electrode, a reference electrode, a sample introduction system and a constant potential system. The core of the working electrode is that calcium and magnesium ions are synergistically cross-linked with sodium alginate to fix electroactive microorganisms, and a porous structure is formed in sodium alginate hydrogel through the unsteady cross-linking effect of the magnesium ions and the sodium alginate, so that the mass transfer of toxic pollutants and electron transfer mediators is improved, and the sensitivity of the sensor is improved. The problem that a traditional sodium alginate immobilized microbial sensor is insufficient in sensitivity is effectively solved, complex microbial modification is not needed, and a new way is provided for rapid, sensitive and stable monitoring of water body biotoxicity.