金上七氮苯二烯-三苯甲酸自组装亚单分子层的脱质子诱导结构演化（111）

IF 3.9 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-06-04 DOI:10.1021/acs.langmuir.5c00893

Zhaokun Wang, Haiwei Wang, Suya Dai, Xiang Zhang, Peng Que, Yongjie Chen, Chao Xiong, Jin Li, Zengfu Ou, Hao Liu, Shenwei Chen, Peng Hu, Hongbing Ji

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引用次数: 0

摘要

我们利用扫描隧道显微镜（STM）报道了4,4 ',4″-（1,3,4,6,7,9,9b-庚氮苯烯-2,5,8-三基）三苯甲酸（HTBA）分子在Au（111）上亚单层覆盖的热诱导自组装演化。STM成像显示，在室温下由氢键稳定的蜂窝网络结构转变为320 K时部分去质子化的阶梯状相，最后在380 K时由完全去质子化的分子形成手性风车相。风车相具有共存的对纯畴和密集的六边形腔。这些结果证明了去质子化在控制分子自组装中的关键作用，并为设计金属表面的热响应纳米结构提供了见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Deprotonation-Induced Structural Evolution in the Self-Assembled Submonolayer of Heptaazaphenalene-Tribenzoic Acid on Au(111)

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Deprotonation-Induced Structural Evolution in the Self-Assembled Submonolayer of Heptaazaphenalene-Tribenzoic Acid on Au(111)

We report the thermally induced self-assembly evolution of 4,4′,4″-(1,3,4,6,7,9,9b-heptaazaphenalene-2,5,8-triyl) tris-benzoic acid (HTBA) molecules on Au(111) at submonolayer coverage using scanning tunneling microscopy (STM). STM imaging reveals a structural transformation from a honeycomb network stabilized by hydrogen bonds at room temperature to a step-like phase with partial deprotonation at 320 K and finally to a chiral pinwheel phase formed by fully deprotonated molecules at 380 K. The pinwheel phase features coexisting enantiomorphic domains and dense hexagonal cavities. These results demonstrate the pivotal role of deprotonation in controlling molecular self-assembly and offer insights for designing thermally responsive nanostructures on metal surfaces.

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).