Mapping Complex Chiral Adlayers: A Truly Random 2-D Solid Solution of ( RS)- 3-Pyrroline-2-Carboxylic Acid on Cu(110)
Mapping Complex Chiral Adlayers: A Truly Random 2-D Solid Solution of ( RS)- 3-Pyrroline-2-Carboxylic Acid on Cu(110)
复制标题
绘制复杂的手性吸附层：( RS)- 3-吡咯啉-2-羧酸在 Cu(110) 上的真正随机二维固溶体
DOI：
10.1021/jp1065314
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Forster M
中科院分区：
文献类型：
--
作者：
Forster M
手性分子吸附层的表征仍然是一个相当大的挑战，最终需要详细的知识的分子手性，化学形式，分子取向，并与表面的相互作用，为每个分子内的组件。在这项工作中，我们表明，（4 × 2）的外消旋混合物的氨基酸衍生物3-吡咯啉-2-羧酸（PCA）在Cu（110）上的组织可以在单分子水平上进行分析，其中每个分子的分子手性和吸附足迹被确定。这种详细的映射揭示了令人惊讶的结果，即在外消旋（4 × 2）结构中，吸附剂既不形成2-D外消旋化合物，也不形成外消旋聚集体。相反，分子手性和吸附足迹都是随机分布的，产生了一个真正的随机固溶体，其中分子手性和足迹手性都是杂乱的。
The characterization of chiral molecular adlayers remains a considerable challenge, ultimately requiring detailed knowledge of the molecular chirality, the chemical form, molecular orientation, and interaction with the surface for each molecule within the assembly. In this work, we show that the (4 × 2) organization of a racemic mixture of the amino acid derivative 3-pyrroline-2-carboxylic acid (PCA) on Cu(110) may be analyzed at the single-molecule level in which the molecular chirality and adsorption footprints of each molecule are identified. Such a detailed mapping reveals the surprising outcome that within the racemic (4 × 2) organization the adlayer does not form either the 2-D racemic compound or racemic conglomerate. Instead, both the molecular chirality and adsorption footprints are randomly distributed, creating a truly random solid solution in which both molecular chirality and footprint chirality are scrambled.