Electrochemically, laccase, a family of multi-copper oxidase, has specificity for performing not only one-electron oxidation of phenolic-related compounds but also four-electron reduction of oxygen, which is expected ...Electrochemically, laccase, a family of multi-copper oxidase, has specificity for performing not only one-electron oxidation of phenolic-related compounds but also four-electron reduction of oxygen, which is expected to be a cathode of biofuel ceils. We have prepared three amino-acid derivatives （for enhancing affinity to laccase） and one control （just for determining redox behavior of ligands and Cu（II/I）） copper（lI） complexes 0-3 having phenolic-related ligands involving anthraquinone moiety. Enhancing current density of electron transfer between the cathode （composed of electron conducting materials such as Nation and carbon nanotube） and laccase could be observed for all 1-3 acting as good mediators according to （spectro）electrochemical results.展开更多
文摘Electrochemically, laccase, a family of multi-copper oxidase, has specificity for performing not only one-electron oxidation of phenolic-related compounds but also four-electron reduction of oxygen, which is expected to be a cathode of biofuel ceils. We have prepared three amino-acid derivatives （for enhancing affinity to laccase） and one control （just for determining redox behavior of ligands and Cu（II/I）） copper（lI） complexes 0-3 having phenolic-related ligands involving anthraquinone moiety. Enhancing current density of electron transfer between the cathode （composed of electron conducting materials such as Nation and carbon nanotube） and laccase could be observed for all 1-3 acting as good mediators according to （spectro）electrochemical results.
