Packing of Isophthalate Tetracarboxylic Acids on Au(111): Rows and Disordered Herringbone Structures.
Packing of Isophthalate Tetracarboxylic Acids on Au(111): Rows and Disordered Herringbone Structures.
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DOI：
10.1021/jp402333m
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发表时间：
2013-09-12
期刊：
影响因子：
--
通讯作者：
Beton PH
中科院分区：
文献类型：
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作者：
Cebula I;Smith EF;Gimenez-Lopez MD;Yang S;Schröder M;Champness NR;Beton PH
利用扫描隧道显微镜（STM）研究了联苯-3，3 ′，5，5 ′-四羧酸（BPTC）、三联苯-3，3 ″，5，5 ″-四羧酸（TPTC）和四联苯-3，3 ″，5，5 ″-四羧酸（QPTC）通过溶液沉积在Au（111）上形成氢键结构的过程. STM数据显示，有序结构可以形成从水溶液导致形成的行最短的酸BPTC，而较长的分子TPTC和QPTC采用人字形结构与显着程度的无序。讨论了溶剂和基质对分子有序性的影响，并利用密度泛函理论确定了这些新相的分子模型。
Scanning tunnelling microscopy (STM) has been used to investigate the formation of hydrogen-bonded structures of the isophthalate tetracarboxylic acids, biphenyl-3,3′,5,5′-tetracarboxylic acid (BPTC), terphenyl-3,3″,5,5″-tetracarboxylic acid (TPTC), and quarterphenyl-3,3‴,5,5‴-tetracarboxylic acid (QPTC), via deposition from solution onto Au(111). STM data reveal that ordered structures can be formed from an aqueous solution leading to the formation of rows for the shortest acid BPTC, while the longer molecules TPTC and QPTC adopt a herringbone-like structure with significant degrees of disorder. The influence of solvent and substrate on the molecular ordering is discussed, and density functional theory is used to identify molecular models for these new phases.