Fabrication and characterization of DNA/QPVP-Os redox-active multilayer film
文献类型：期刊论文
| 作者 | Liu JY ; Jin YD ; Wu AG ; Li Z ; Dong SJ |
| 刊名 | electroanalysis
 |
| 出版日期 | 2004 |
| 卷号 | 16期号:23页码:1931-1937 |
| 关键词 | DNA HYBRIDIZATION CHARGE-TRANSPORT ELECTRODES SURFACE GOLD COMPLEXES IMPEDANCE ELECTROCHEMISTRY IMMOBILIZATION NANOPARTICLES |
| ISSN号 | 1040-0397 |
| 通讯作者 | liu jy |
| 中文摘要 | calf thymus dna was immobilized on functionalized glassy carbon, gold and quartz substrates, respectively, by the layer-by-layer (lbl) assembly method with a polycation qpvp-os, a quaternized poly(4-vinylpyridine) partially complexed with osmium bis(2,2'-bipyridine) as counterions. uv-visible absorption and surface plasmon resonance spectroscopy (spr) showed that the resulting film was uniform with the average thickness 3.4 nm for one bilayer. cyclic voltammetry (cv) showed that the total surface coverage of the polycations increases as each qpvp-os/dna bilayer added to the electrode surface, but the surface formal potential of os-centered redox reaction shifts negatively, which is mainly attributed to the intercalation of redox-active complex to dna chain. the electron transfer kinetics of electroactive qpvp-os in the multilayer film was investigated by electrochemical impedance experiment for the first time. the permeability of fe(cn)(6)(3-) in the solution into the multilayer film depends on the number of bilayers in the film. it is worth noting that when the multilayer film is up to 4 bilayers, the cv curves of the multilayer films display the typical characteristic of a microelectrode array. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000225700500002 |
| 公开日期 | 2010-08-17 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/15015]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu JY,Jin YD,Wu AG,et al. Fabrication and characterization of DNA/QPVP-Os redox-active multilayer film[J]. electroanalysis,2004,16(23):1931-1937. |
| APA | Liu JY,Jin YD,Wu AG,Li Z,&Dong SJ.(2004).Fabrication and characterization of DNA/QPVP-Os redox-active multilayer film.electroanalysis,16(23),1931-1937. |
| MLA | Liu JY,et al."Fabrication and characterization of DNA/QPVP-Os redox-active multilayer film".electroanalysis 16.23(2004):1931-1937. |
入库方式： OAI收割
来源：长春应用化学研究所
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