Article
Chemistry, Physical
Meixue Ke, Tao Ma, Yi Wang, Xiaofang Zeng, Xinrui Miao, Xiaohong Cheng, Wenli Deng
Summary: In this study, the self-assembly behavior of a benzothiadiazole-based fluorophore was investigated in different solvents. The results showed that the self-assemblies exhibited solvent and concentration dependence, with different structures formed at different solvent interfaces. Additionally, the role of chain length in controlling the self-assembly patterns was also observed.
APPLIED SURFACE SCIENCE
(2022)
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
Engineering, Chemical
Wan-Tzu Yen, Ke-Hsuan Wang, Masaaki Yoshida, Murugesan Balamurugan, Takeshi Kawai, Shanmugamathan Venkatesan, Yuh-Lang Lee
Summary: In this study, dodecylamine is used as a model molecule to investigate its self-assembly behavior on an Au surface. The results show weak interaction and slow adsorption of DDA with the gold surface, with molecules arranged in a flat-lying orientation.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
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, Multidisciplinary
Tobias Weiss, Aleksandr Baklanov, Georg S. Michelitsch, Karsten Reuter, Martin Schwarz, Manuela Garnica, Willi Auwarter
Summary: This study presents the first real space characterization of borazine molecules and their self-assemblies on solid supports. The adsorption of borazine on Ag(111) surface is weak and non-dissociative, with the ring aligned parallel to the surface plane. Borazine molecules prefer hollow adsorption sites, leading to the assembly of both porous and dense-packed structures. STM-based manipulation is demonstrated to modify the borazine adsorption configuration.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Physical
Ruoning Li, Xue Zhang, Na Xue, Jie Li, Tianhao Wu, Zhen Xu, Yifan Wang, Na Li, Hao Tang, Shimin Hou, Yongfeng Wang
Summary: Metal-organic nanostructures on surfaces are structurally stable and have potential applications. Metal atoms can come from externally deposited metals or native surface atoms. Currently, these nanostructures mainly consist of Au or Cu, with fewer consisting of Ag. Further investigations are needed for accurate control of the desired nanostructures.
ACTA PHYSICO-CHIMICA SINICA
(2022)
Article
Chemistry, Multidisciplinary
Sergey Y. Sarvadii, Andrey K. Gatin, Vasiliy A. Kharitonov, Nadezhda Dokhlikova, Sergey A. Ozerin, Maxim Grishin, Boris R. Shub
Summary: The study investigated the adsorption of CO on the surface of Cu-based nanoparticles under the presence of an external electric field. It was demonstrated that the size of the nanoparticle is a key factor affecting the adsorption process, particularly the strength of the local electric field close to the surface.
Article
Crystallography
Talha Ijaz, Xin Zhang, Xiaorui Chen, Xueting Xing, Simin Fang, Mengyuan Liu, Huan Lu, Fangsen Li, Jianzhi Gao, Minghu Pan
Summary: The self-assembly and photo-induced mechanical switching of azobenzene derivatives on Au (111) was studied, showing potential for nanoscale optical applications. The molecules experienced configurational changes upon UV light exposure, suggesting new possibilities for nanoscale photo-switch molecular devices.
Article
Chemistry, Multidisciplinary
Nicolas Neel, Joerg Kroeger
Summary: The study revealed that the formation of a chemical bond between a CO molecule and a Cu(111) surface is accompanied by bending of the molecular probe due to van der Waals attraction and Pauli repulsion, resulting in characteristic changes in the vertical force between CO and Cu(111) as a function of molecule-surface distance. Experimental data were successfully reproduced by model calculations, shedding new light on vertical-force extrema in scanning probe experiments.
Article
Chemistry, Multidisciplinary
Uma Narang, Renu Gautam, Kumar Karitkey Yadav, Soumee Bhattacharya, P. K. Sahu, Anil K. Aggarwal, Shive M. S. Chauhan
Summary: The self-aggregation behavior of porphyrin molecules was investigated in order to produce nanostructures with specific morphology and shape by introducing new hydrogen bonding sites at the periphery. A metal-free porphyrin with a triazine functional moiety was synthesized and used to prepare nanostructures in chloroform solvent with the assistance of cetyltrimethylammonium bromide (CTAB) surfactant. The morphology, size, and photophysical properties of these nanostructures were characterized using various techniques including SEM, TEM, DLS, UV-Visible, fluorescence, and IR spectroscopy. The results revealed well-defined cube-shaped nanostructures, and the role of hydrogen bonding in controlling the aggregation of the triazine-bearing porphyrin molecules was investigated through UV-Visible and IR spectroscopy.
Article
Chemistry, Multidisciplinary
Peng Lei, Lin Ma, Siqi Zhang, Jianqiao Li, Linlin Gan, Ke Deng, Wubiao Duan, Wei Li, Qingdao Zeng
Summary: This study investigates the self-assembled behavior of an unsymmetric molecule (BCDTDA) and the regulatory behaviors of COR and three bipyridine derivatives on BCDTDA self-assembly structures. STM is used to observe the variation of assembled behaviors at the solid-liquid interface. The concentration effect leads to the formation of hydrogen bonded dimers, and the regulatory molecules either maintain or destroy the dimeric structure of BCDTDA, forming different co-assembled structures. The discovery of molecular interactions provides a promising strategy for the construction of functional nanostructures and devices.
CHINESE CHEMICAL LETTERS
(2023)
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
Peng Lei, Yang Feng, Ting Meng, Yufei Zhang, Xunwen Xiao, Ke Deng, Yi Liu, Qingdao Zeng
Summary: This study reveals the self-assembly structures of three X-shaped aggregation-induced emission molecules using scanning tunneling microscopy and density functional theory. The results show that the functional groups and solution concentration have significant effects on the self-assembly structures.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Chong Chen, Pengcheng C. Ding, Zhuo Li, Guoqiang Q. Shi, Ye Sun, Lev N. Kantorovich, Flemming Besenbacher, Miao Yu
Summary: This study reports the super-robust complexes formed by xanthine and sodium and demonstrates their high thermal stability in a high-temperature environment. These findings support the theory of life originating from hydrothermal environments and reveal the robustness of the complexes and their ability to induce electron transfer in harsh conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Multidisciplinary
Lina Shang, Faming Kang, Wenze Gao, Zheng Zhou, Wei Xu
Summary: The on-surface synthesis of carbon nanostructures has gained significant attention due to their unique properties and wide range of applications. Recent studies have focused on low-dimensional sp-carbon nanostructures, which exhibit structural linearity, small steric demands, and intriguing electronic and mechanical properties.
Article
Energy & Fuels
Zishuai Zhang, Funian Mo, Wei Ling, Mangwei Cui, Jun Wei, Miao Yu, Yan Huang
Summary: In this study, novel KVO nanobelts were synthesized and used as cathodes for aqueous NiIBs. The KVO cathode exhibited high reversible specific capacity, excellent cycling performance, and rate capability. The layered structure and fast kinetics of the KVO cathode were key to achieving these advantages.
Article
Chemistry, Multidisciplinary
Lei Xie, Yuanqi Ding, Donglin Li, Chi Zhang, Yangfan Wu, Luye Sun, Mengxi Liu, Xiaohui Qiu, Wei Xu
Summary: Water plays a crucial role in biological self-assembly processes, and studying the interactions between water and organic molecules can provide insights into the mechanisms of biological self-assembly.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Biomedical
Yuanlin Wang, Xiang Sun, Yaqian Han, Kai Wang, Lixin Cheng, Ye Sun, Flemming Besenbacher, Miao Yu
Summary: A study reports the use of Au@MnSe2 core-shell nanoagent for synergetic chemodynamic-photothermo-photocatalytic therapy in combination with tetramodal imaging. The nanoagent allows immediate generation of (OH)-O-dot independent of pre-reaction and enhances (OH)-O-dot generation from endogenous H2O2 and hyperthermia. The study also demonstrates an effective immune response activation and high tumor inhibition rate.
ADVANCED HEALTHCARE MATERIALS
(2022)
Article
Chemistry, Physical
Umamahesh Thupakula, Xavier Bouju, Jesus Castro-Esteban, Erik Dujardin, Diego Pena, Christian Joachim
Summary: Through scanning tunneling microscopy experiments, it is discovered that graphene nanoribbons on a gold surface are cut and deformed at the contact points, highlighting the importance of maintaining the planar conformation of the nanoribbons.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Yi Li, Weidong Niu, Tao Chen, Ye Sun, Miao Yu
Summary: In this study, a new electrocatalyst, sulfur-deficient tin disulfide covered nitrogen-doped hollow carbon spheres, was reported for CO2 reduction reaction. By combining experimental analysis and calculations, it was found that this material can decrease the reaction barrier, increase CO2 adsorption capacity and affinity with the intermediate, and promote the reaction rate. Under -1.2V potential, the electrocatalyst exhibited high current density and high Faradaic efficiency for formate in a large potential range.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Nanoscience & Nanotechnology
Yi Li, Yanghan Chen, Tao Chen, Guoqiang Shi, Lin Zhu, Ye Sun, Miao Yu
Summary: This study presents a highly efficient strategy for the conversion of CO2 to ethanol, achieving a high yield. By decorating Cu nanosheets with small Cu2S nanocrystals, the electrocatalyst demonstrated a relatively high positive charge on Cu, abundant interfaces, and a non-flat, stepped surface, enhancing the affinity of *CO and decreasing the barrier for *COCO formation. The strategy delivered a high partial current density of approximately 20.7 mA cm-2 and a Faraday efficiency of 46% for ethanol production.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Tao Wang, Paula Angulo-Portugal, Alejandro Berdonces-Layunta, Andrej Jancarik, Andre Gourdon, Jan Holec, Manish Kumar, Diego Soler, Pavel Jelinek, David Casanova, Martina Corso, Dimas G. de Oteyza, Jan Patrick Calupitan
Summary: The coupling of a sterically demanded pentacene derivative on Au(111) into fused dimers connected by non-benzenoid rings was studied using high-resolution scanning tunneling microscopy/spectroscopy and density functional theory. The diradical character of the products was tuned by modifying the coupling section, with the antiaromaticity of cyclobutadiene and its position within the structure playing a significant role. Understanding these structure-property relationships is crucial for designing new complex and functional molecular structures.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Biophysics
Hong Zhang, Chenggang Zhang, Zhaotong Wang, Wenwu Cao, Miao Yu, Ye Sun
Summary: We report the ultrasensitive and anti-interference detection of SARS-CoV2 spike protein in untreated saliva using an antibody/aptamer-free (AAF) SERS substrate, applying the evanescent field induced by the high-order waveguide modes of well-defined nanorods for SERS for the first time. A detection limit of 3.6 x 10-17 M and 1.6 x 10-16 M are achieved in phosphate buffered saline and untreated saliva, respectively, which are three orders of magnitude better than the best records from AAF substrates. This work unlocks an exciting path for designing AAF SERS substrates for ultrasensitive biosensing, not limited to the detection of viral antigens.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Multidisciplinary Sciences
Pengcheng Ding, Shaoshan Wang, Cristina Mattioli, Zhuo Li, Guoqiang Shi, Ye Sun, Andre Gourdon, Lev Kantorovich, Flemming Besenbacher, Federico Rosei, Miao Yu
Summary: On-surface synthesis (OSS) is an efficient molecular engineering approach for investigating intermolecular coupling at the sub-molecular level. This study demonstrates the extension of OSS from two dimensions to three dimensions using cycloaddition between C60 and an aromatic compound.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Dengfeng Yu, Huimin Liang, Gongyuan Zhao, Hong Zhang, Xinsong Wei, Di Zhao, Miao Yu, Ye Sun
Summary: The hierarchical, hollow structured nanocages of nickel-cobalt bimetallic selenide covered by nitrogen-doped carbon shell (NiCo3Se4@NC) show enhanced rate performance and cycle stability as an anode material for sodium-ion batteries, thanks to the short transfer distance for Na+ ions, buffer of volume expansion, and improved charge transfer.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Zhuo Li, Zhaoyan Gao, Jinping Hu, Cristina Mattioli, Pengcheng Ding, Wenpeng Xu, Ye Sun, Junjie Li, Dingyong Zhong, Yudong Huang, Geng Li, Fei Song, Andre Gourdon, Lev N. Kantorovich, Flemming Besenbacher, Miao Yu
Summary: In this study, we report the large-distance confinement of electronic states in a single-layer graphene (SLG) by an extended molecular adlayer. Despite being 6.7A away from Cu(111) with the graphene sheet in between, the defined corrals can still effectively trap the free electron gas of the Cu surface, lifting the dispersive band of Cu. The migrated electrons from the Cu substrate to SLG are shown to accumulate above the SLG surface instead of at the Cu-SLG interface. The physisorbed molecular layer sharpens the dispersion of graphene electronic states. These results open up new possibilities for the design of hybrid electronic devices and graphene modification.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Yi Li, Yanghan Chen, Tao Chen, Guoqiang Shi, Lin Zhu, Ye Sun, Miao Yu
Summary: By decorating small Cu2S nanocrystals uniformly on Cu nanosheets, this electrocatalyst integrates three desirable features, including a high positive local charge on Cu (Cu delta+), abundant interfaces between Cu delta+ and zero-valence Cu0, and a non-flat, stepped catalyst surface. This promotes the affinity of *CO, decreases *COCO formation barrier, and thermodynamically prefers *CH2CHO-to-*CH3CHO conversion. As a result, a high partial current density of about 20.7 mA cm-2 and a Faraday efficiency of 46% for C2H5OH are achieved at -1.2 V vs reversible hydrogen electrode in an H-cell containing a 0.1 M KHCO3 solution. This study proposes an efficient strategy for high-yield CO2-to-C2H5OH conversion, highlighting the potential for industrial production of alcohol and related products from CO2.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Nataliya Kalashnyk, Adam Hassan Denawi, Frederic Dumur, Didier Gigmes, Xavier Bouju, Sylvain Clair
Summary: The supramolecular self-assembly of s-indacene-1,3,5,7(2H,6H)-tetrone on the Cu(111) surface was investigated and six different phases were found, driven by different interactions. Host-guest interactions allowed for the accommodation of molecular or metal clusters inside the nanoporous patterns. Three metal-organic networks led to the creation of regular arrays of isolated metal adatoms or adatom clusters.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)