ToF-SIMS investigation of functional mixed aromatic thiol monolayers on gold
ToF-SIMS investigation of functional mixed aromatic thiol monolayers on gold
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DOI：
10.1016/j.apsusc.2004.03.073
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发表时间：
2004-06-15
影响因子：
6.7
通讯作者：
Licciardello, A
中科院分区：
文献类型：
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作者：
Auditore, A;Tuccitto, N;Licciardello, A
采用 ToF-SIMS 方法研究了由 4'-(4-巯基苯基)2,2': 6',2" 三联吡啶和巯基苯溶液制备的金上自组装混合组分芳香层。对于这样的系统，静态 SIMS 提供的定量信息与 XPS 数据非常一致。混合层以准恒定的成分形成，几乎与起始溶液中成分的比例无关。这表明存在特别稳定的芳香层。静态 SIMS 光谱中簇离子的强度行为表明，表面层是均匀混合物，而不是相分离。SIMS 光谱的多变量分析可以区分表面成分非常相似但由不同起始溶液制备的样品，从而提供对表面成分的精细控制 (C) 2004 Elsevier B.V. 保留。
Self assembled mixed component aromatic layers on gold, prepared from solutions of 4'-(4-mercaptophenyl)2,2': 6',2" terpyridine and mercaptobenzene, have been investigated by means of ToF-SIMS. For such a system, static SIMS provides quantitative information in excellent agreement with XPS data. The mixed layer is formed with a quasi-constant composition, almost independent of the ratio of the constituents in the starting solution. This indicates the existence of a particularly stable structure. The intensity behaviour of clusters ions in static SIMS spectra suggests that the surface layer is a homogeneous mixture rather than phase separated. Multivariate analysis of SIMS spectra allows to discriminate samples with very similar surface composition, but prepared from different starting solutions, providing a fine control of surface composition. (C) 2004 Elsevier B.V. All fights reserved.