Facile preparation of nanoelectrode ensembles using amphiphilic block copolymer film.
Facile preparation of nanoelectrode ensembles using amphiphilic block copolymer film.
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DOI：
10.1021/la0522810
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发表时间：
2005-11
期刊：
影响因子：
--
通讯作者：
Kouske Hirota;K. Tajima;K. Hashimoto
中科院分区：
文献类型：
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作者：
Kouske Hirota;K. Tajima;K. Hashimoto
利用聚（苯乙烯-嵌段-环氧乙烷）（P（S-b-EO））的自组织特性和两亲性，我们实现了纳米电极系综（NEE）的一步制备。通过精心选择的电解质溶液，只有聚（环氧乙烷）（PEO）的P（S-b-EO）膜中的部分溶胀作为溶剂化离子的纳米隧道，而聚苯乙烯段仍然是强大的电极掩模。电化学分析表明，由于二茂铁在PEO纳米畴中的扩散系数较小，可以观察到线性扩散和非线性扩散之间的转变。
Taking advantage of both the self-organizing characteristics and the amphiphilic property of poly(styrene-block-ethyleneoxide) (P(S-b-EO)), we have realized one-step fabrication of nanoelectrode ensembles (NEEs). By choosing the electrolyte solution elaborately, only the poly(ethylene oxide) (PEO) segment in the P(S-b-EO) film was swollen to serve as nanoscale tunnels for solvated ions, whereas the polystyrene segment remained robust to be the electrode mask. An electrochemical analysis indicated that a transition between linear diffusion and nonlinear diffusion could be observed due to the small diffusion coefficient of ferrocene in PEO nanodomains.