AI Article Synopsis
- Self-assembled multilayer thin films were created on a gold substrate using a method involving alternating treatments with L-cysteine hydrochloride and cupric perchlorate.
- The structure of these multilayers was analyzed with X-ray photoelectron spectroscopy, revealing two distinct bonding modes for the copper ions within the layers.
- Additionally, cyclic voltammetry confirmed the presence and behavior of copper ions in the multilayers, setting the stage for the development of repeated multilayer films.
Article Abstract
Self-assembled multilayer thin films have been prepared on Au substrate by alternate surface derivatization with L-cysteine hydrochloride and cupric perchlorate. The layer-by-layer structure at each step of multilayer formation was investigated by X-ray photoelectron spectroscopy. The measurements indicate that there are two structure modes in the multilayers. One is that Cu(2+) sandwiches between two amino acid groups. The other one is that Cu(+) is bonded through disulfide and thiolate. This process is also confirmed by cyclic voltammetry of Cu ion at different self-assembled multilayers. Steps further on will lead to repeated multilayer films.
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| http://dx.doi.org/10.1006/jcis.2002.8265 | DOI Listing |
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