Two-Dimensional Self-Assembly of Chiral Malic Acid on Cu(110)†
Two-Dimensional Self-Assembly of Chiral Malic Acid on Cu(110)†
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DOI：
10.1021/jp106575g
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发表时间：
2011-02
影响因子：
3.7
通讯作者：
C. Roth;D. Passerone;L. Merz;M. Parschau;K. Ernst
中科院分区：
文献类型：
--
作者：
C. Roth;D. Passerone;L. Merz;M. Parschau;K. Ernst
用X射线光电子能谱、反射吸收红外光谱、低能电子衍射、扫描隧道显微镜和密度泛函理论研究了手性苹果酸在Cu（110）表面的二维结晶过程。两个原则的吸附模式被确定，其中一个或两个羧酸基团与表面相互作用后，去质子化。已经观察到11个有序相，其中大多数不是完美的长程有序，而是与其他结构共存。由于与苹果酸分子的相互作用，底物变得重排。相对于以前的研究进行酒石酸和琥珀酸在这个表面上的结果进行了讨论。
The two-dimensional crystallization of chiral malic acid on a Cu(110) surface has been studied in ultrahigh vacuum with X-ray photoelectron spectroscopy, reflection absorption infrared spectroscopy, low energy electron diffraction, scanning tunneling microscopy, and density functional theory. Two principle adsorbate modes were identified, in which either one or both carboxylate groups interact with the surface after deprotonation. Eleven ordered phases have been observed, most of them not in perfect long-range order and rather coexisting with other structures. The substrate becomes rearranged due to the interaction with the malic acid molecules. The results are discussed with respect to previous studies performed on tartaric acid and succinic acid on this surface.