Article
Chemistry, Multidisciplinary
Shanchao Tan, Wendi Luo, Yongjie Zhang, Xiang-Kui Ren, Yuhong Liu, Zhijian Chen, Qingdao Zeng
Summary: The self-assembly process of a BODIPY derivative functionalized with uracil groups was thoroughly investigated using STM and DFT methods. The formation of hydrogen bonds between uracil groups was identified as the key factor contributing to the construction of ordered self-assembly structure. Additionally, the nanotribological property of the self-assembly on HOPG surface was measured using AFM.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
David L. Wisman, Heechan Kim, Chungryeol Kim, Tobias W. Morris, Dongwhan Lee, Steven L. Tait
Summary: Intermolecular interactions play a crucial role in guiding self-assembly on surfaces. Precise control over these interactions by rational design of the molecule allows fine control over the self-assembly patterns. Hydrogen bonding significantly impacts two-dimensional molecular self-assembly and can be a potent strategy to modulate molecular 2D lattices on surfaces.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Dingguan Wang, Zishen Wang, Wei Liu, Arramel, Siying Zhong, Yuan Ping Feng, Kian Ping Loh, Andrew Thye Shen Wee
Summary: The study investigates molecular clusters formed on Au(111) with diverse halogen bonds, revealing the presence of three distinct halogen bonds among the clusters. The real-space atomic information of these clusters is acquired using non-contact atomic force microscopy and low-temperature scanning tunneling microscopy.
Article
Chemistry, Multidisciplinary
Yi Wang, Xinrui Miao, Wenli Deng, Romain Brisse, Bruno Jousselme, Fabien Silly
Summary: This study investigates the trapping of coronene and zinc phthalocyanine molecules by a two-dimensional self-assembled nanoarchitecture using scanning tunneling microscopy at the liquid-solid interface. The results show that coronene molecules only occupy a small fraction of the cavities, while zinc phthalocyanine molecules occupy a majority of the cavities and fill them completely in a short period of time.
Article
Chemistry, Multidisciplinary
Hui Shen, Zhen Xu, Lingzheng Wang, Ying-Zi Han, Xianhu Liu, Sami Malola, Boon K. Teo, Hannu Hakkinen, Nanfeng Zheng
Summary: The study introduces a novel synthetic strategy to successfully synthesize tertiary chiral nanostructures with 100% optical purity. These structures consist of tri-metallic superatoms with inherent chirality and fair stability, driven by C-H...F interaction during self-assembly.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Fengru Zheng, Jiayi Lu, Zhiwen Zhu, Hao Jiang, Yuyi Yan, Yu He, Shaoxuan Yuan, Qiang Sun
Summary: In this study, a graph neural network was used to predict the self-assembly of functional polycyclic aromatic hydrocarbons (PAHs) on metal surfaces. Experimental data from scanning tunneling microscopy (STM) were used to train the model. Compared to traditional machine learning algorithms, our model exhibited better predictive performance. The generalization of the model was further verified by comparing the predictions with experimental results of different functionalized molecules. Our results demonstrate the possibility of using trained experimental data sets to predict and design nanostructures with functional molecules.
Article
Chemistry, Multidisciplinary
Fengru Zheng, Jiayi Lu, Zhiwen Zhu, Hao Jiang, Yuyi Yan, Yu He, Shaoxuan Yuan, Qiang Sun
Summary: The application of supramolecular chemistry on solid surfaces has been widely studied. Machine learning (ML) has become an exciting tool in material research, allowing for efficient and accurate predictions of molecular properties. In this work, a graph neural network was used to predict the self-assembly of functional polycyclic aromatic hydrocarbons (PAHs) on metal surfaces. The model showed better predictive performance compared to traditional ML algorithms, and its generalization was verified through comparisons with experimental results of different functionalized molecules.
Article
Chemistry, Physical
Mariano D. Jimenez-Sanchez, Nour Sanchez-Abad, Nicoleta Nicoara, Jose M. Gomez-Rodriguez
Summary: In this study, the self-assembled structure and electronic structure of chloroaluminum phthalocyanines (ClAlPc) on graphene grown on Pt(111) surfaces were investigated using scanning tunneling microscopy (STM) under ultrahigh vacuum (UHV) and low-temperature conditions. Well-ordered molecular islands with rotational domains were observed in the submonolayer regime, with the ClAlPc molecules adopting a Cl-Up configuration. The correlation between molecular lattice orientation and graphene directions was identified, while no influence of the underlying moire ' patterns was found.
Article
Chemistry, Multidisciplinary
Tianze Hu, Andrea Minoia, Gangamallaiah Velpula, Kanykei Ryskulova, Kristof Van Hecke, Roberto Lazzaroni, Kunal S. Mali, Richard Hoogenboom, Steven De Feyter
Summary: This study investigates the self-assembly behavior of DPP-C12 at the interface between HA and HOPG. The self-assembled monolayer formed by DPP-C12 is periodic in one direction but aperiodic in the orthogonal direction, resembling a 1D disordered racemic compound. Introducing Pd(II) ions transforms these 1D compounds into 2D racemic conglomerates. These findings provide insights into the regulation of two-dimensional chirality.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Lukas Grossmann, Eva Ringel, Atena Rastgoo-Lahrood, Benjamin T. King, Johanna Rosen, Wolfgang M. Heckl, Dorina Opris, Jonas Bjoerk, Markus Lackinger
Summary: Currently, there is limited research on the self-assembly of three-dimensional molecules on surfaces. These molecules have a greater variability in their modes of adsorption compared to (nearly) planar molecules. This variability can significantly affect the expression of intermolecular binding motifs and the formation of supramolecular structures. The study found that molecule-surface interactions can be tuned to facilitate crystal engineering in two dimensions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Polymer Science
Zhi Li, Yanan Li, Chengjie Yin
Summary: This article discusses the phenomenon of ordered self-assembly on solid substrates, and its importance in both fundamental surface science research and its applications in nanotechnology. By utilizing scanning tunneling microscopy (STM), researchers can investigate the structural transition of self-assembled molecules and provide advanced methods for controlling and regulating self-assembly structures.
Article
Chemistry, Physical
Tamara Rinkovec, Demian Kalebic, Mark Van der Auweraer, Wim Dehaen, Jeremy N. Harvey, Steven De Feyter
Summary: This study investigates the effect of concentration on the self-assembly process of molecular networks using scanning tunneling microscopy. The research aims to improve the understanding of 2D supramolecular chemistry by obtaining quantitative data. The results show highly cooperative behavior and the significant impact of molecular structure on the critical concentration.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Tamara Rinkovec, Demian Kalebic, Mark Van der Auweraer, Wim Dehaen, Jeremy N. Harvey, Steven De Feyter
Summary: In this study, the effect of concentration on the self-assembled molecular network formation process was investigated using scanning tunneling microscopy. Isophthalic acids were chosen as a model system, and the adsorption behavior was evaluated at the nanoscale. The results showed the existence of a critical concentration for self-assembly, with the molecular structure having a significant impact on this threshold value. Furthermore, highly cooperative behavior was observed at the liquid/solid interface, providing a rare example of quantitative measurement of cooperative phenomena.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Stefania Moro, Nicholas Siemons, Oscar Drury, Daniel A. Warr, Thomas A. Moriarty, Luis M. A. Perdigao, Drew Pearce, Maximilian Moser, Rawad K. . Hallani, Joseph Parker, Iain McCulloch, Jarvist M. Frost, Jenny Nelson, Giovanni Costantini
Summary: Conjugated polymers with glycol-based chains have promising applications in bioelectronics and thermoelectrics. In this study, we determined the microstructure of these polymers with submonomer resolution and found that the side chains play a crucial role in polymer assembly. The conformation of the side chains is influenced by their free analogues, rather than the backbone torsional potential energy. These findings can be extended to other conjugated polymers for microstructure characterization.
Article
Chemistry, Physical
Yi Wang, Yuanjiao Liu, Hengqi Zou, Xinrui Miao, Wenli Deng, Qunhui Yuan
Summary: This paper investigates the 2D supramolecular self-assembly driven by halogen bonding and explores the solvent effect on the self-assembly using scanning tunneling microscopy. The results provide insights into the understanding of halogen bonding and offer guidance for the fabrication of novel 2D textures.
APPLIED SURFACE SCIENCE
(2023)
Article
Physics, Applied
Shinsaku Wakasugi, Shu Kurokawa, Howon Kim, Yukio Hasegawa, Akira Sakai
JOURNAL OF APPLIED PHYSICS
(2017)
Article
Nanoscience & Nanotechnology
Jeong Heum Jeon, Howon Kim, Won-Jun Jang, Jungpil Seo, Se-Jong Kahng
Article
Physics, Multidisciplinary
Seokhwan Choi, Steven Johnston, Won-Jun Jang, Klaus Koepernik, Ken Nakatsukasa, Jong Mok Ok, Hyun-Jung Lee, Hyun Woo Choi, Alex Taekyung Lee, Alireza Akbari, Yannis K. Semertzidis, Yunkyu Bang, Jun Sung Kim, Jhinhwan Lee
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Multidisciplinary
Seokhwan Choi, Hyoung Joon Choi, Jong Mok Ok, Yeonghoon Lee, Won-Jun Jang, Alex Taekyung Lee, Young Kuk, SungBin Lee, Andreas J. Heinrich, Sang-Wook Cheong, Yunkyu Bang, Steven Johnston, Jun Sung Kim, Jhinhwan Lee
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Multidisciplinary
Baojie Feng, Osamu Sugino, Ro-Ya Liu, Jin Zhang, Ryu Yukawa, Mitsuaki Kawamura, Takushi Iimori, Howon Kim, Yukio Hasegawa, Hui Li, Lan Chen, Kehui Wu, Hiroshi Kumigashira, Fumio Komori, Tai-Chang Chiang, Sheng Meng, Iwao Matsuda
PHYSICAL REVIEW LETTERS
(2017)
Article
Instruments & Instrumentation
Jhinhwan Lee
REVIEW OF SCIENTIFIC INSTRUMENTS
(2017)
Article
Multidisciplinary Sciences
Howon Kim, Yasuo Yoshida, Chi-Cheng Lee, Tay-Rong Chang, Horng-Tay Jeng, Hsin Lin, Yoshinori Haga, Zachary Fisk, Yukio Hasegawa
Article
Multidisciplinary Sciences
Howon Kim, Alexandra Palacio-Morales, Thore Posske, Levente Rozsa, Krisztian Palotas, Laszlo Szunyogh, Michael Thorwart, Roland Wiesendanger
Article
Instruments & Instrumentation
Jhinhwan Lee
REVIEW OF SCIENTIFIC INSTRUMENTS
(2019)
Article
Multidisciplinary Sciences
Alexandra Palacio-Morales, Eric Mascot, Sagen Cocklin, Howon Kim, Stephan Rachel, Dirk K. Morr, Roland Wiesendanger
Article
Physics, Multidisciplinary
Dominik Schreyer, Howon Kim, Roland Wiesendanger
NEW JOURNAL OF PHYSICS
(2020)
Article
Multidisciplinary Sciences
Howon Kim, Levente Rozsa, Dominik Schreyer, Eszter Simon, Roland Wiesendanger
NATURE COMMUNICATIONS
(2020)
Article
Physics, Applied
Howon Kim, Yuki Nagai, Levente Rozsa, Dominik Schreyer, Roland Wiesendanger
Summary: This study reports the observation of anisotropic non-split zero-energy vortex bound states in a conventional elemental superconductor, challenging the previous understanding of observing MBSs. The experimental results suggest that these non-split states reflect the quasiparticle trajectories governed by the surface electronic structure.
APPLIED PHYSICS REVIEWS
(2021)
Article
Materials Science, Multidisciplinary
Min Hui Chang, Yun Hee Chang, Na-Young Kim, Howon Kim, Soon-Hyeong Lee, Mahn-Soo Choi, Yong-Hyun Kim, Se-Jong Kahng
Article
Chemistry, Multidisciplinary
Min Hui Chang, Na-Young Kim, Yun Hee Chang, Yeunhee Lee, Un Seung Jeon, Howon Kim, Yong-Hyun Kim, Se-Jong Kahng