Direct Electrochemistry of Glucose Oxidase and Biosensing for Glucose Based on Graphene Changsheng Shan Huafeng Yang Jiangfeng Song Dongxue Han Ari Ivaska Li Niu 10.1021/ac802193c.s001 https://acs.figshare.com/articles/journal_contribution/Direct_Electrochemistry_of_Glucose_Oxidase_and_Biosensing_for_Glucose_Based_on_Graphene/2871589 We first reported that polyvinylpyrrolidone-protected graphene was dispersed well in water and had good electrochemical reduction toward O<sub>2</sub> and H<sub>2</sub>O<sub>2</sub>. With glucose oxidase (GOD) as an enzyme model, we constructed a novel polyvinylpyrrolidone-protected graphene/polyethylenimine-functionalized ionic liquid/GOD electrochemical biosensor, which achieved the direct electron transfer of GOD, maintained its bioactivity and showed potential application for the fabrication of novel glucose biosensors with linear glucose response up to 14 mM. 2009-03-15 00:00:00 glucose oxidase graphene glucose response novel glucose biosensors Glucose Oxidase GOD 14 mM H 2O O 2 enzyme model electron transfer Direct Electrochemistry electrochemical reduction