A5065220628- Surface Chemistry and Catalysis
- Graphene research and applications
- Molecular Junctions and Nanostructures
- 2D Materials and Applications
- Advanced Condensed Matter Physics
- Quantum Dots Synthesis And Properties
- Supramolecular Self-Assembly in Materials
- MXene and MAX Phase Materials
- Advanced Photocatalysis Techniques
- Catalytic Processes in Materials Science
- Perovskite Materials and Applications
- Nanocluster Synthesis and Applications
- Analytical Chemistry and Sensors
- Advanced oxidation water treatment
- Magnetic and transport properties of perovskites and related materials
- Topological Materials and Phenomena
- Chemical Synthesis and Analysis
- Strong Light-Matter Interactions
- Diamond and Carbon-based Materials Research
- Nanoporous metals and alloys
- Machine Learning in Materials Science
- Metal-Organic Frameworks: Synthesis and Applications
- TiO2 Photocatalysis and Solar Cells
- Crystallography and molecular interactions
- Electrocatalysts for Energy Conversion
University of Birmingham
2018-2025
Peking University
2024-2025
University of Science and Technology Beijing
2023
Flat bands (FBs), presenting a strongly interacting quantum system, have drawn increasing interest recently. However, experimental growth and synthesis of FB materials been challenging remained elusive for the ideal form monolayer where arises from destructive interference as predicted in 2D lattice models. Here, we report surface self-assembled hydrogen-bond (H-bond) organic frameworks (HOFs) 1,3,5-tris(4-hydroxyphenyl)benzene (THPB) on Au(111) substrate observation FB. High-resolution...
Single-crystal Au(111), renowned for its chemically inert surface, long-range "herringbone" reconstruction, and high electrical conductivity, has long served as an exemplary template in diverse fields, e.g., crystal epitaxy, electronics, electrocatalysis. However, commercial Au(111) products are high-priced limited to centimeter sizes, largely restricting their broad applications. Herein, a low-cost, high-reproducible method is developed produce 4 in. single crystals from Au foils, via...
Individual cobalt atoms trapped within a bilayer of C60 have been produced by the deposition Co onto double layer supported on graphite. High-resolution scanning tunneling microscopy (STM) reveals two stable states single atom coordinated with three molecules, which is denoted as (C60)3Co. The diffusion layers highly limited, resulting in effective capture interstitial sites close-packed layers. Density functional theory calculations show that located tetrahedral void between most...
Abstract Chirality transfer is of vital importance that dominates the structure and functionality biological systems living matters. External physical stimulations, e.g. polarized light mechanical forces, can trigger chirality symmetry breaking, leading to appearance enantiomeric entities created from a chiral self‐assembly achiral molecule. Here, several 2D assemblies with different chirality, synthesized on Au(111) surface by using building blocks – glycylglycine (digly), simplest...
The honeycomb iridate Na2IrO3, as a candidate for the Kitaev model, has drawn increasing attention in recent years. It is rare example of strongly correlated, topologically nontrivial band structure that may have protected quantum spin Hall states. nature its intriguing insulating phase and magnetic order still under debate. In present work, we combine low-temperature scanning tunneling microscopy/spectroscopy density functional theory calculations to show Na2IrO3 exhibits gap 420 meV at 77...
On-surface synthesis is exhibited as a promising "bottom-up" approach for fabricating numerous macromolecular nanostructures. Compared to noncyclic architectures, macrocycles are of significant interest due their specific "endless" cyclic topology and hence tunable topology-dependent properties. The with well-defined composition geometry remains great challenge, especially large-sized rings. Here, we report successful organometallic on the Ag(111) surface via utilizing thiophene-containing...
A two-dimensional van der Waals supramolecular framework is created by self-assembled cocrystallization of C60 and octanethiol molecules on the Au(111) surfaces. The characterized network, in which pores are filled RS-Au-SR (R = CH3(CH2)7S) staples. stabilized cooperative interactions involving collective self-assembly instead commonly observed pairwise between nearest neighbors. pairing two adjacent formation dimer visualized low temperature scanning tunneling microscopic imaging,...
The conversion of light alkanes to olefins is crucial the chemical industry. quest for improved catalytic performance this motivated by current drawbacks including: expensive noble metal catalysts, poor conversion, low selectivity, and fast decay efficiency. in situ visualization complex catalysis at atomic level therefore a major advance rational framework upon building future catalysts. Herein, C–H bond activations ethylbenzene on TiO2(110)-(1 × 1) were explored with high-resolution...
The capacity for nanopatterning and functionality is a promising facet of supramolecular self‐assembly. However, the formation molecular frameworks entirely dependent on van der Waals (vdW) interactions infrequently explored. Herein, 2D vdW structures are synthesized through self‐assembled cocrystallization C 60 decanethiol (DT) molecules Au(111) surface. Notably, system eliminates need functional groups specific bonding between adjacent units. conformation /DT delicately manipulated by...
A self-assembled monolayer (SAM) consisting of a mixture CH3S–Au–SCH3, CH3S–Au–S(CH2)2CH3, and CH3(CH2)2S–Au–S(CH2)2CH3 was studied systematically using scanning tunneling microscopy density functional calculations. We find that the SAM is subjected to frequent changes at molecular level on time scale ∼minutes. The presence CH3S or CH3S–Au as dissociation product CH3S–Au–SCH3 plays key role in dynamical behavior mixed SAM. Slow phase separation takes place room temperature over hours days,...
Abstract 2D van der Waals layered materials, represented by transition metal dichalcogenides (TMDCs), graphene, and h ‐BN, have garnered worldwide research interests due to their unique structures fascinating physical properties distinct from bulk counterparts. Featuring superior controllability scalability, bottom‐up synthetic approaches, including chemical vapor deposition, molecular beam epitaxy, etc., are widely adopted for preparing high‐quality materials heterostructures. In these...
Microscopic imaging of molecules is important for determination molecular structures by providing real space snapshots. The scanning tunneling microscope (STM) able to offer local perturbations a molecule such that the locked in transient state. This perturbation tunable certain extent, giving rise possibility "pose" before shot taken. Here, we report pose-and-shoot method applied Au-adatom-diethylthiolate (CH3CH2S–Au–SCH2CH3). type perturbational significantly enhances capability STM...
Supramolecular tessellation with self-synthesized (C60)7 tiles is achieved based on a cooperative interaction between co-adsorbed C60 and octanethiol (OT) molecules. Tile synthesis tiling take place simultaneously gold substrate leading to two-dimensional lattice of OT as the binder molecule filling gaps tiles. This supramolecular featured simultaneous on-site self-organized tiling. In absence specific functional groups, key ordered for C60/OT system collective van der Waals (vdW) among...
Single-atomic-layer gold nanosheets have been synthesized on the Au(111) substrate guided by vertical molecular channels confined an octanethiolate (OT) surfactant, in great contrast to typical hexagonal or triangular islands observed homoepitaxy (111) plane of fcc metals. This anomalous growth mode shows a strong dependence coverage surfactant and hence demonstrates possibility using as useful control parameter fine-tuning shape aspect ratio for metal nanorods. The Au sheet grows...
Abstract Flat bands (FBs), presenting a strongly interacting quantum system have drawn increasing interest recently, as partly reflected by its discovery in twisted bilayer graphene association with superconductivity. However, experimental realization of topological FBs has been hampered lacking FB materials, and especially remained elusive the ideal platform monolayer materials where they arise from destructive interference predicted 2D lattice models. Here, we report synthesis mesoscale...
Kinetic Controlled Chirality Transfer and Induction Two-dimensional hydrogen-bonding assemblies with different chirality, e.g. achiral, homochiral racemic, are synthesized on Au(111) surface by using achiral glycylglycine, one of the simplest polypeptides, as building blocks. induction related symmetry broken in introduced handedness assembled motifs then amplified to entire via interaction between motifs. More details can be found article number 2207111 Jianzhi Gao, Minghu Pan, Lifeng Chi,...
The exciton polariton is a kind of quasiparticles and provides promising opportunity to explore fundamental quantum phenomena for photonic applications. Transition-metal dichalcogenide (TMD) materials provide the platform nanophotonics that supports propagative polaritons even at room-temperature. Previously, real space studies on thin flakes TMDs by scattering-type scanning nearfield optical microscopy (s-SNOM) were limited waveguide thickness down 30 nm. In this work, we present...