A Most Enantioselective Chiral Surface: Tartaric Acid on All Surfaces Vicinal to Cu(110)
A Most Enantioselective Chiral Surface: Tartaric Acid on All Surfaces Vicinal to Cu(110)
复制标题
最具对映选择性的手性表面：与 Cu(110) 邻位的所有表面上的酒石酸
DOI：
10.1021/acs.langmuir.9b02476
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发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
Gellman, Andrew J.
中科院分区：
文献类型：
--
作者：
Karagoz, Burcu;Payne, Matthew;Reinicker, Aaron;Kondratyuk, Petro;Gellman, Andrew J.
本质手性表面上的对映选择性化学是结构敏感表面化学的典型形式，纯粹源于表面结构的不对称性。由于手性分子与手性表面的对映特异性相互作用能量的大小有限，识别或设计使给定过程的对映选择性最大化的手性表面结构极具挑战性。使用具有连续二维晶体取向分布的球形铜单晶暴露表面，我们绘制了酒石酸分解在表面取向空间上的对映特异性表面反应动力学。这些测量揭示了对映选择性的机械起源，并确定了最具对映特异性的表面取向的结构特征。
Enantioselective chemistry on intrinsically chiral surfaces is the quintessential form of structure-sensitive surface chemistry, arising purely from the dissymmetry of the surface structure. Identification or design of chiral surface structures that maximize enantioselectivity for a given processes is extremely challenging because of the limited magnitude of the enantiospecific interaction energetics of chiral molecules with chiral surfaces. Using spherical Cu single crystals exposing surfaces with a continuous two-dimensional distribution of crystallographic orientations, we mapped the enantiospecific surface reaction kinetics of tartaric acid decomposition across the surface orientation space. These measurements reveal both the mechanistic origin of enantioselectivity and identify the structural features of the most enantiospecific surface orientation.