Facile Preparation of Nanoelectrode Ensembles Using Amphiphilic Block Copolymer Film
- 1 November 2005
- journal article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 21 (25) , 11592-11595
- https://doi.org/10.1021/la0522810
Abstract
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.Keywords
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