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Assembly process of CuHCF/MPA multilayers on gold nanoparticles modified electrode and characterization by electrochemical SPR
- Source :
-
Journal of Electroanalytical Chemistry . Feb2007, Vol. 600 Issue 2, p265-274. 10p. - Publication Year :
- 2007
-
Abstract
- Abstract: Gold nanoparticles were deposited onto 2-mercaptoethylamine (MEA)-assembled planar gold thin film to construct gold nanoparticles modified electrode by virtue of a solution-based self-assembly strategy. Subsequently, 3-mercaptopropionic acid (MPA)-bridged copper hexacyanoferrate (CuHCF) multilayers were constructed on the as-prepared gold nanoparticles modified electrode. The resulted multilayer nanostructures were investigated by electrochemical surface plasmon resonance (EC-SPR) and atomic force microscopy (AFM) with primary emphasis upon the effect of the gold nanoparticles on the MPA/CuHCF multilayers growth and their surface morphology. Compared with the multilayer system on a planar gold electrode, the different electrochemical and optical properties might result from higher curvature effect and extraordinary surface-to-volume ratio characteristic of gold nanoparticles and the nanoparticle-selective growth of CuHCF. A dendrimer-like assembly process was proposed to explain the experiment results. This new motif of multilayer on the gold nanoparticles modified electrode was different from that of on a planar gold electrode, indicating a potential application of EC-SPR technique in the study of nanocomposite materials. [Copyright &y& Elsevier]
- Subjects :
- *NANOPARTICLES
*GOLD
*ATOMIC force microscopy
*THIN films
Subjects
Details
- Language :
- English
- ISSN :
- 15726657
- Volume :
- 600
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Electroanalytical Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 23809763
- Full Text :
- https://doi.org/10.1016/j.jelechem.2006.10.008