A5017391155- Nanocluster Synthesis and Applications
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Nanomaterials in Catalysis
- Organic Light-Emitting Diodes Research
- Luminescence Properties of Advanced Materials
- Solid-state spectroscopy and crystallography
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Carbon and Quantum Dots Applications
- 2D Materials and Applications
- Optical properties and cooling technologies in crystalline materials
- 3D Shape Modeling and Analysis
- Lanthanide and Transition Metal Complexes
- Photonic and Optical Devices
- Organic Electronics and Photovoltaics
- Mass Spectrometry Techniques and Applications
- Gas Sensing Nanomaterials and Sensors
- Computer Graphics and Visualization Techniques
- Ammonia Synthesis and Nitrogen Reduction
- Iron oxide chemistry and applications
- Chemical Reactions and Isotopes
- Image Processing and 3D Reconstruction
- Copper-based nanomaterials and applications
Jilin University
2014-2025
State Key Laboratory on Integrated Optoelectronics
2004-2025
Jilin Medical University
2015-2025
Qingdao University of Science and Technology
2024
Renmin University of China
2021-2024
Wenzhou University
2022-2024
North China University of Technology
2024
Indiana University Bloomington
2023
Shanghai Jiao Tong University
2023
National University of Singapore
2019-2022
CsPbX3 (X = Cl, Br, I) perovskite quantum dots (QDs) are potential emitting materials for illumination and display applications, but toxic Pb is not environment- user-friendly. In this work, we demonstrate the partial replacement of with Mn through phosphine-free hot-injection preparation CsPbxMn1-xCl3 QDs in colloidal solution. The substitution ratio up to 46%, as-prepared maintain tetragonal crystalline structure CsPbCl3 host. Meaningfully, greatly enhances photoluminescence yields from 5...
Metal nanoclusters (NCs) as a new class of phosphors have attracted great deal interest owing to their unique electronic structure and subsequently molecule-like optical properties. However, limited successes been achieved in producing the NCs with excellent luminescent performance. In this paper, we demonstrate significant luminescence intensity enhancement 1-dodecanethiol (DT)-capped Cu via self-assembly strategy. By forming compact ordered assemblies, original nonluminescent exhibit...
Abstract Aggregation‐induced emission (AIE) provides an efficient strategy to synthesize highly luminescent metal nanoclusters (NCs), however, rational control of energy and intensity NCs is still challenging. This communication reveals the impact surface Au I ‐thiolate motifs on AIE properties NCs, by employing a series water‐soluble glutathione (GSH)‐coordinated complexes as model ([Au 10 SR ], [Au 15 13 18 14 25 ] − , SR=thiolate ligand). Spectroscopic investigations show that wavelength...
Aurophilic interactions (AuI ⋅⋅⋅AuI ) are crucial in directing the supramolecular self-assembly of many gold(I) compounds; however, this intriguing chemistry has been rarely explored for nanoscale building blocks. Herein, we report on studies aurophilic structure-directed ultrasmall gold nanoparticles or nanoclusters (NCs, <2 nm) using [Au25 (SR)18 ]- (SR=thiolate ligand) as a model cluster. The NCs is initiated by surface-motif reconstruction from short SR-[AuI -SR]2 units to long -SR]x...
Abstract Metal nanoclusters (MNCs) are ultrasmall metal‐organic aggregates, composed of a metal core less than 2 nm and protecting shell ligand motifs. The controlled aggregation atoms (in the cluster core) motifs (around renders MNCs with numerous molecule‐like properties, among which strong bright luminescence has attracted extensive basic applied interests. It now known that aggregation‐induced emission is feasible mechanism for controlling MNCs, makes it particularly useful in biosensing...
Directed self-assembly (DSA) of nanoparticles plays a key role in customizing advanced functional materials via collective and synergetic properties between neighbored building blocks. In comparison to the blossom DSA large (>3 nm) nanoparticle system witnessed past decades, development sub-two-nanometer regime (e.g., underlying chemistry, fundamental assemblies potential applications) markedly lags behind. Thanks continuous progress synthetic chemistry total structure determination...
The restriction of structural vibration has assumed great importance in attaining bright emission luminescent metal nanoclusters (NCs), where tremendous efforts are devoted to manipulating the surface landscape yet remain challenges for modulation kernel. Here, we report efficient suppression kernel achieving enhancement intensity, by rigidifying NCs and propagating as-developed strains into core. Specifically, a layer-by-layer triple-ligands engineering is deployed allow solution-phase Au...
Most lead-free halide double perovskite materials display low photoluminescence quantum yield (PLQY) due to the indirect bandgap or forbidden transition. Doping is an effective strategy tailor optical properties of materials. Herein, efficient blue-emitting Sb3+ -doped Cs2 NaInCl6 nanocrystals (NCs) are selected as host, rare-earth (RE) ions (Sm3+ , Eu3+ Tb3+ and Dy3+ ) incorporated into excellent PLQY 80.1% obtained. Femtosecond transient absorption measurement found that RE not only served...
Quasi-2D perovskites have emerged as a promising luminescent material for perovskite light-emitting diodes (Pe-LEDs). However, efficiency and stability are still obstacles to practical application due numerous defects inefficient energy transfer of films. Herein, functional phenethylammonium bromine-modified CsPbBr3 nanocrystals (PEA-CsPbBr3 NCs) first introduced multifunctional additive simultaneously improve abovementioned problems. PEA-CsPbBr3 NCs not only serve heteronuclear seeds...
While quasi-two-dimensional (quasi-2D) perovskites have good properties of cascade energy transfer, high exciton binding energy, and quantum efficiency, which will benefit high-efficiency blue PeLEDs, inefficient domain distribution management unbalanced carrier transport impede device performance improvement. Herein, (2-(9H-carbazol-9-yl)ethyl)phosphonic acid (2PACz) methyl 2-aminopyridine-4-carboxylate (MAC) were simultaneously introduced to a quasi-2D perovskite film. Relying on the...
Abstract Although colloidal perovskite nanocrystal (PNC) solution has exhibited near‐unity photoluminescence quantum yield (PLQY), the luminance would be severely quenched when PNC is assembled into thin films due to agglomeration and fusion of NCs caused by exfoliation surface ligands non‐radiative Förster resonance energy transfer (FRET) from small large particle sizes, which seriously affected performances light‐emitting diodes (LEDs). Here, we used Guanidine thiocyanate (GASCN) Sodium...
Aggregation/assembly induced emission (AIE) has been observed for metal nanoclusters (NCs), but the origin of enhanced is not fully understood, yet. In this work, significant contribution defects on AIE revealed by engineering self-assembly process Cu NCs using ethanol. The presence ethanol leads to a rapid assembly into ultrathin nanosheets, promoting formation defects-rich surface. Detailed studies and computer simulation confirm that nanosheets possess increased Cu(I)-to-Cu(0) ratio,...
CsPbX3 (X = Cl, Br, I) nanocrystals (NCs) are competitive emitting materials for illumination and display because of their outstanding photophysical properties. However, the conventional synthetic approaches suffer from low yields, complex procedures, toxic chemicals. In this work, we demonstrate a one-step microwave-assisted approach to prepare NCs. The homogeneous heating rapid temperature increment microwave preparation facilitate growth NCs, producing NCs with high photoluminescence...
Two-dimensional (2D) nanomaterials possessing regular layered structures and versatile chemical composition are highly expected in many applications. Despite the importance of van der Waals (vdW) attraction constructing maintaining structures, origin 2D anisotropy is not fully understood, yet. Here, we report self-assembly ligand-capped Au15 nanoclusters into mono-, few-, multilayered sheets colloidal solution. Both experimental results computer simulation reveal that initiated by 1D dipolar...
Aromatic thiols are employed as capping ligands to prepare self-assembly architectures of Cu nanoclusters, which generate tunable aggregation-induced emission in the red region.
Metal-halide perovskite materials are highly attractive for optoelectronic applications. However, the instability of caused by moisture and heat-induced degradation impairs future prospects using these materials. Here we employ water to directly transform films three-dimensional (3D) CsPbBr3 stable two-dimensional (2D) perovskite-related CsPb2Br5. A sequential dissolution–recrystallization process governs this water-induced transformation under PbBr2 rich conditions. We find that...
Abstract Circularly polarized luminescence (CPL) is the emission featured spatial orientation equivalent to circular dichroism. Owning unique magnetic dipole‐allowed but electric‐dipole‐forbidden 4 f → transitions, chiral lanthanide complexes have been recognized as ideal candidates achieve unprecedented dissymmetry factor ( g lum ). Their inherent transition can be partly allowed, through rational design of coordination ligands lower surrounding symmetry, further endowing them with...
Abstract Flexible perovskite light‐emitting diodes (LEDs) have been highly expected to realize advanced wearable optoelectronic applications due the excellent properties of perovskites. However, poor water and oxygen stability limited flexibility perovskites prevent their commercialization in flexible LEDs. Herein, low‐cost green biomass materials‐ethyl cellulose (EC) is added CsPbI 3 nanocrystals (NCs), acting as a cross‐linker between neighboring halide octahedra through hydrogen bonds...
Considering the multi-functionalization of ligands, it is crucial for ligand molecular design to reveal landscape anchoring sites. Here, a typical triphenylphosphine (TPP) was employed explore its effect on surface CsPbI3 perovskite nanocrystals (PNCs). Except conventionally considered P-Pb coordination, an P-I supramolecular halogen bonding also found NC surface. The coexistence above two types significantly increased formation energy iodine vacancy defects and improved photoluminescence...
Abstract Wide‐coverage near infrared (NIR) phosphor‐converted LEDs possess promising potential for practical applications, but little is developed towards the efficient and wide‐coverage NIR phosphors. Here, we report single‐component lanthanide (Ln 3+ ) ions doped Cs 2 M(In 0.95 Sb 0.05 )Cl 6 (M=alkali metal) nanocrystals (NCs), exhibiting emission from 850 to 1650 nm with high photoluminescence quantum yield of 20.3 %, which accomplished by shaping multiple metal halide octahedra double...