Controlling Metal-Organic Structure by Tuning Molecular Size, Supported Substrate, and Type of Metal

Controlling Metal-Organic Structure by Tuning Molecular Size, Supported Substrate, and Type of Metal
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通过调节分子大小、支撑基质和金属类型来控制金属有机结构

DOI:
10.1007/s10876-020-01791-x
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发表时间:
2020-04
影响因子:
2.8
通讯作者:
Wang Yongfeng
Wang Yongfeng
中科院分区:
化学4区
文献类型:
--
作者:
Yuan Chenyang;Xue Na;Zhang Yajie;Li Na;Shen Ziyong;Hou Shimin;Wang Yongfeng

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金属有机结构是通过调节分子大小、载体和不同种类的金属来可控地制备的。它们的特征在于超高真空低温扫描隧道显微镜和密度泛函理论计算。与(2E,4E)-3-甲基-5-(2,6,6-三甲基环己-1-烯基)戊-2,4-二烯酸(DiA)相比,全反式视黄酸(ReA)相对较大的尺寸导致四聚体中相邻ReA之间的较大间隙,并允许分子插入,形成高密度图案。ReA在活性较低的Au(111)上形成不同比例(4:0,3:1,2:2)的两种手性对映体的各种结构。与过渡金属不同,分子与碱金属之间的静电吸引是形成大四重岛的起源。
Metal-organic structures are controllably prepared by tuning molecular size, supported substrates, and different kinds of metals. They are characterized by ultra-high vacuum low-temperature scanning tunnelling microscopy and Density functional theory calculations. The relatively larger size of all-trans-retinoic acid (ReA) compared to (2E,4E)-3-methyl-5-(2,6,6-trimethylcyclohex-1-enyl)penta-2,4-dienoic acid (DiA) leads to a bigger gap between neighboring ReA in a tetramer and allows for insertion of molecules, forming high density patterns. ReA forms various structures with different ratios (4:0, 3:1, 2:2) of the two chiral enantiomers on the less reactive Au(111) other than Ag(111). Unlike transition metals, electrostatic attraction between molecules and alkali metals is the origin of the formation of large quartet islands.
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影响因子: 4.9
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