• 제목/요약/키워드: Redox Polymer

검색결과 85건 처리시간 0.03초

Simple Electrochemical Immunosensor for the Determination of Rabbit IgG Using Osmium Redox Polymer Films

  • Choi, Young-Bong;Lee, Seung-Hwa;Tae, Gun-Sik
    • 전기화학회지
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    • 제10권3호
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    • pp.229-232
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    • 2007
  • An amperometric immunosensor for the determination of rabbit IgG is proposed. The immunoassay utilizes a screen-printed carbon electrode on which osmium redox polymer is electrodeposited. This immunoassay detects 0.1 ng/ml of rabbit IgG, which is ${\sim}10^2$ fold higher than the most sensitive enzyme amplified amperometric immunoassay. The assay utilizes a screen-printed carbon electrode which was pre-coated by a co-electrodeposited film of an electron conducting redox hydrogel and a rabbit IgG. The rabbit IgG in the electron conducting film conjugates captures, when present, the anti-rabbit IgG. The captured anti-rabbit-IgG is labeled with horseradish peroxidase (HRP) which catalyzes the two-electron reduction of $H_2O_2$ to water. Because the redox hydrogel electrically connects HRP reaction centers to the electrode, completion of the sandwich converts the film from non-electrocatalytic to electro-catalytic for the reduction of $H_2O_2$ to $H_2O$ when the electrode is poised at 200 mV vs. Ag/AgCl.

Electrodeposition of Conducting Polymers on Copper in Nonaqueous Media by Corrosion Inhibition

  • Lee, Seonha;Lee, Hochun
    • Journal of Electrochemical Science and Technology
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    • 제3권2호
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    • pp.85-89
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    • 2012
  • This study demonstrates the direct anodic electrodeposition of polypyrrole (PPy), poly(3,4-ethyl-enedioxythiophene) (PEDOT), and polythiophene (PTh) on Cu electrodes by employing a corrosion inhibitor, succinonitrile (SN). SN was found to suppress anodic Cu dissolution beyond the oxidation potential of the polymer monomers. It is also revealed that the Cu surface passivated by SN is still adequately conductive to allow the redox reaction of 1,4-difluoro-2,5-dimethoxybenzene (FMB) and the oxidation of the polymer monomers. Through both cyclic voltammetry and galvanostatic techniques, PPy, PEDOT, and PTh films were successfully synthesized on Cu electrodes in the presence of SN, and the redox behaviors of the films were evaluated.

Membrane-Less Biofuel Cell

  • 김혁한
    • 한국전기화학회:학술대회논문집
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    • 한국전기화학회 2004년도 춘계총회 및 학술발표회
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    • pp.28-28
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    • 2004
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촉진수송 및 태양전지용 분리막 (Polymer Electrolytes and their Application to Solar Cells and Separation Membranes)

  • 강용수
    • 한국막학회:학술대회논문집
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    • 한국막학회 2004년도 첨단 분리막 연구동향
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    • pp.13-35
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    • 2004
  • Metal Complexes in Macromolecules Applications of Polymer Electrolyte Membranes Facilitated Transport in Solid State Roles of Electrolytes in Solar Cells - Electrolytes :ㆍI- and $I_3$-conductor ㆍelectron barrier or hole conductor ㆍelectrochemical redox reaction media ㆍinterfacial contactor for dye, $TiO_2$ and electrode ㆍmechanical separator (omitted)

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전바나듐계 레독스-흐름 전지용 Vinylbenzyl Chloride-co-Styrene-co-Hydroxyethyl Acrylate (VBC-co-St-co-HEA) 음이온교환막의 합성 및 특성 (Synthesis and Characterization of Vinylbenzyl Chloride-co-Styrene-co-Hydroxyethyl Acrylate (VBC-co-St-co-HEA) Anion-Exchange Membrane for All-Vanadium Redox Flow Battery)

  • 백영민;곽노석;황택성
    • 폴리머
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    • 제35권6호
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    • pp.586-592
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    • 2011
  • 본 연구에서는 전바나듐 레독스-흐름 전지용 음이온교환막의 제조를 위하여 vinylbenzyl chloride-co-styreneco-hydroxyethyl acrylate(VBC-co-St-co-HEA) 공중합체를 합성하였으며, 아민화 및 가교 반응을 통하여 음이온교환막을 제조하였다. 구조확인을 위하여 FTIR, $^1H$ NMR, TGA, GPC 분석을 하였으며, 음이온교환막의 함수율, 이온교환용량, 전기저항, 이온전도도 및 전바나듐 레독스-흐름 전지의 효율을 측정하였다. 음이온교환막의 이온교환용량, 전기저항, 이온전도도는 각각 1.17 meq/g, $1.9{\Omega}{\cdot}cm^2$, 0.009 S/cm이었으며, 전바나듐 레독스-흐름 전지 효율 실험 결과 충 방전효율, 전압효율 및 에너지효율은 각각 99.5, 72.6, 72.1%이었다.

Radical Polymers and Organic Radical Battery

  • Nishide, Hiroyuki
    • 한국고분자학회:학술대회논문집
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    • 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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    • pp.62-62
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    • 2006
  • Based on the redox couples of a nitroxide radical, organic radical polymers were utilized as the electrode-active or charge-storage component for a secondary battery. We call a battery composed of the radical polymer electrode as "organic radical battery". Organic radical battery has several advantages: high capacity, high power-rate performance, long cycle ability, and environmentally-benign features. Synthesis and electrochemical studies of nitroxide polymers are described. Battery fabrication and cell performance are also reported.

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바나듐 레독스-흐름 전지용 격막에 관한 연구 (Study on a Separator for the All-vanadium Redox Flow Battery)

  • 이상호;김정근;최상일;황갑진;진창수
    • 멤브레인
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    • 제19권2호
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    • pp.129-135
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    • 2009
  • 바나듐 레독스-흐름 전지용 격막으로 사용하기 위해 폴리설폰(Psf)에 폴리페닐렌설파이드설폰(PPSS)을 블록 공중합 시킨 폴리머를 사용하여 양이온교환막을 제작하여, 막 특성을 평가하였다. 제작한 양이온교환막은 Nafion117보다 열적 안정성이 뛰어나다는 것을 TG분석을 통해 알 수 있었고, 1몰 황산용액에서의 막 저항은 3 cc의 CSA를 도입하였을 때 $0.96{\Omeg}{\cdot}cm^2$로 제일 작은 저항 값을 나타냈다. 제작한 양이온교환막의 바나듐 레독스-흐름 전지에서의 전기화학적 특성에 대해 평가하였다. 제작한 양이온교환막을 사용한 바나듐 레독스-흐름 전지의 100% 충전상태에서의 기전력은 바나듐 레독스-흐름 전지의 기전력 값인 1.4V를 나타냈으며, 각 충전상태에서의 충 방전 셀 저항은 Nafion117을 사용한 전지의 값보다 작은 값을 나타냈다.