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TEMPO-substituted polyacrylamide for an aqueous electrolyte-typed and organic-based rechargeable device

Science China Chemistry 2012年第5期55卷 822-829页

作者： CHIKUSHI Natsuru YAMADA Hiroshi OYAIZU Kenichi NISHIDE Hiroyuki Department of Applied Chemistry Waseda University Tokyo 169-8555 Japan

A hydrophilic radical polymer, poly（2,2,6,6-teteramethylpiperidinyloxyl-4-yl acrylamide）（PTAm）, was synthesized via oxidation of the corresponding precursor polymer, poly（2,2,6,6-teteramethylpiperidine-4-yl acrylamide）. Electrochemical properties of the PTAm layer were characterized in three aqueous electrolytes of sodium chloride （NaCl）, sodium tetrafluoroborate （NaBF4）, and sodium hexafluorophosphate （NaPF6） to optimize its activity as an organic cathode. The counter anion species significantly affected the capacity and the cycle performance of the PTAm layer. The PTAm layer in the presence of BF4？ displayed quantitative redox capacity beyond 1 μm layer thickness and maintained the discharging capacity of 110 mAh g-1 （97% vs. the calculated capacity） even after 1000 cycle charging/discharging, which could be ascribed to its appropriate affinity to the aqueous electrolyte without any dissolution into the electrolyte. A totally organic-based rechargeable cell was fabricated using PTAm and poly（N-4,4＇-bipyridinium-N-decamethylene dibromide） as the cathode and the anode, respectively, and the aqueous electrolyte of NaBF4. The cell gave a plateau voltage at 1.2 V both on charging and discharging and an excellent charging/discharging cyclability of ＆gt;2000 with high coulombic efficiency of ＆gt;95%.

关键词： polyacrylamide organic radical molecule redox polymer aqueous electrolyte rechargeable battery

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Development of Enzyme Biosensor for Amperometric Measurement of Aspartate Aminotransferase

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稀有金属材料与工程 2006年第A3期35卷 330-332页

作者： Zonghui Guo Chunxiu Liu Huaqing Li Jianfang Xu Lianshi Feng Xinxia Cai State Key Laboratory of Transducer Technology Institute of Electronics Chinese Academy of Sciences Beijing 100080 China Graduate School of Chinese Academy of Science Beijing 100080 China Biology Center China Institute of Sport Science Beijing 100080 China

An enzyme biosensor for amperometric measurement of aspartate aminotransferase has been *** working electrode was modified with a thin-film of redox polymer,then glutamate oxidase,with the immobilized reagent cast and dried on the *** biosensor responses to AST by detecting hydrogen peroxide were produced by enzymical reaction at-0.1 V with a response time of 120 *** electrode gave a detection limit of 32.5 U/L with a linear concentration range of 32.5 U/L～2000 U/L in *** to more sensitive and lower detection limit,the biosensor is expected mainly to be used for physiological identification and physical performance of athletes in the *** application will also affect the practice of clinical medicine for the diagnosis of heart and liver disease.

关键词： aspartate aminotransferase redox polymer amperometric biosensor

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Development of Enzyme Biosensor for Amperometric Measurement of Aspartate Aminotransferase

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稀有金属材料与工程 2006年第S3期 330-332页

作者： Zonghui Guo~(1,2) Chunxiu Liu~(1,2) Huaqing Li~(1,2) Jianfang Xu~3 Lianshi Feng~3 Xinxia Cai~(1,*) (1.State Key Laboratory of Transducer Technology,Institute of Electronics,Chinese Academy of Sciences,Beijing 100080,China) (2.Graduate School of Chinese Academy of Science,Beijing 100080,China) (3.Biology Center China Institute of Sport Science,Beijing 100080,China)

关键词： aspartate aminotransferase redox polymer amperometric biosensor

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