Electrochemical stability of self-assembled monolayers on nanoporous Au
Electrochemical stability of self-assembled monolayers on nanoporous Au
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DOI：
10.1039/c0cp02553d
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发表时间：
2011-01-01
影响因子：
3.3
通讯作者：
Mabuchi, Mamoru
中科院分区：
文献类型：
--
作者：
Hakamada, Masataka;Takahashi, Masaki;Mabuchi, Mamoru
巯基自组装单层（SAMs）的解吸严重限制了巯基器件的制造。在这里，我们证明了通过合金化金-银合金生产的纳米孔金具有高的电化学稳定性，可以抵抗硫化物的脱附。纳米孔金在韧带表面有许多缺陷位点、晶格应变和残留银。第一性原理计算表明，这些表面方面增加了SAM与纳米孔Au表面之间的结合能。
Desorption of thiolate self-assembled monolayers (SAMs) seriously limits the fabrication of thiol-based devices. Here we demonstrate that nanoporous Au produced by dealloying Au-Ag alloys exhibits high electrochemical stability against thiolate desorption. Nanoporous Au has many defective sites, lattice strain and residual Ag on the ligament surface. First-principles calculations indicate that these surface aspects increase the binding energy between a SAM and the surface of nanoporous Au.