A5034731882- Perovskite Materials and Applications
- Nanoplatforms for cancer theranostics
- Luminescence Properties of Advanced Materials
- Luminescence and Fluorescent Materials
- Gas Sensing Nanomaterials and Sensors
- Photoacoustic and Ultrasonic Imaging
- Quantum Dots Synthesis And Properties
- Extracellular vesicles in disease
- Analytical Chemistry and Sensors
- Advanced Chemical Sensor Technologies
- Organic Light-Emitting Diodes Research
- Advanced Nanomaterials in Catalysis
- Nanocluster Synthesis and Applications
- Radiation Detection and Scintillator Technologies
- MXene and MAX Phase Materials
- Thermal Expansion and Ionic Conductivity
- Optical properties and cooling technologies in crystalline materials
- Advanced Photocatalysis Techniques
- Advanced biosensing and bioanalysis techniques
- Photoreceptor and optogenetics research
- Infrared Target Detection Methodologies
- Fire Detection and Safety Systems
- Terahertz technology and applications
- Advanced battery technologies research
- Microwave Dielectric Ceramics Synthesis
Nanyang Technological University
2017-2025
University of Cambridge
2022-2025
University at Buffalo, State University of New York
2018-2021
Singapore Polytechnic
2017
Nd3+-sensitized upconversion nanoparticles are among the most promising emerging fluorescent nanotransducers. They activated by 808 nm irradiation, which features merits such as limited tissue overheating and deeper penetration depth, hence attractive for diagnostic therapeutic applications. Recent studies indicate that ultrasmall (<10 nm) potentially more suitable clinical application due to their favorable biodistribution safety profiles. However, in sub-10 range suffer from poor...
A judicious layer-by-layer assembly strategy has been developed to rationally integrate graphene quantum dots with metal nanocrystals for multifarious catalysis.
Rechargeable Zn–air battery is a promising alternative to the widely used lithium–ion battery. Its practical use, however, hindered by low power density, unsatisfactory energy efficiency, poor durability, and unstable voltage output. Here, we demonstrate bifunctional catalyst for oxygen evolution reduction reactions based on 3D MXene coupled with nitrogen-doped cobalt selenide nanocrystals (N-CoSe2/3D Ti3C2Tx). Combining experimental characterizations density functional theory (DFT),...
Abstract Cross‐relaxation among sensitizers is commonly regarded as deleterious in fluorescent materials, although favorable photothermal agents. Herein, we coated Prussian blue (PB) on NaNdF 4 nanoparticles to fabricate core–shell nanocomplexes with new cross relaxation pathways between the ladder‐like energy levels of Nd 3+ ions and continuous band PB. The conversion efficiency was improved exceptionally mechanism enhanced effect investigated. In vivo photoacoustic imaging therapy...
Double perovskites (DPs) with Cs 2 AgInCl 6 composition, as one of the lead-free perovskites, have been in spotlight owing to their intriguing optical properties, namely, self-trapped exciton (STE) emission and dopant-induced photoluminescence. However, current DPs still face challenge low photoluminescence efficiency cannot be applied practice. Herein, we synthesize Bi 3+ Eu codoped DPs, which displays enhanced STE ions characteristic emissions. Our results indicate that mainly substitute...
Photodynamic therapy (PDT) holds great promise as a noninvasive and selective cancer therapeutic treatment in preclinical research clinical practice; however, it has limited efficacy the ablation of deep-seated tumor because hypoxia-associated circumstance poor penetration photosensitizers to cells away from blood vessels. To tackle obstacles, we propose strategy that synergizes upconversion nanophotosensitizers (UNPSs) with hyperbaric oxygen (HBO) remodel extracellular matrix for enhanced...
Near-infrared (NIR) light penetrates tissue deeply, but its application to motor behavior stimulation has been limited by the lack of known genetic NIR light-responsive sensors. We designed and synthesized a Yb3+/Er3+/Ca2+-based lanthanide-doped upconversion nanoparticle (UCNP) that effectively converts 808 nm green emission. This UCNP is compatible with Chrimson, cation channel activated light; as such, it can be used in optogenetic manipulation behaviors Caenorhabditis elegans. show this...
Abstract Antimony (Sb), a typical group VA semimetal, has rarely been studied both experimentally and theoretically in plasmonic photothermal therapy, possibly due to the lack of effective morphology‐controllable methods for preparation high‐quality Sb nanocrystals. In this study, an ligand‐guided growth strategy controllably synthesize nanopolyhedrons (Sb NPHs) with ultrahigh conversion efficiency (PTCE), good stability, as well biocompatibility is presented. Furthermore, modulation effect...
Abstract Defect tolerance is a critical enabling factor for efficient lead-halide perovskite materials, but the current understanding primarily on band-edge (cold) carriers, with significant debate over whether hot carriers can also exhibit defect tolerance. Here, this important gap in field addressed by investigating how intentionally-introduced traps affect carrier relaxation CsPbX 3 nanocrystals (X = Br, I, or mixture). Using femtosecond interband and intraband spectroscopy, along...
Epitaxial growth of an inert shell around the optical active lanthanide upconversion nanoparticles (UCNPs) is a general strategy to enhance their brightness. Yet, its potential as tool in multiplexing emission tailoring has rarely been reported. Here, by developing atomic vacancies into color selectivity actuators, we present efficient achieve inert-shell-modulated 1540 nm activated UCNPs. Artificially generated fluoride vacancies, owing decreased NaOH/NH4F dosage during growth, reduce...
Abstract Limited by the insufficient active sites and interference from breath humidity, designing reliable gas sensing materials with high activity moisture resistance remains a challenge to analyze human exhaled for translational application of medical diagnostics. Herein, dual cooperative diagnosis is achieved utilizing metal‐organic frameworks (MOFs) its derivative. The Fe‐MIL‐101‐NH 2 serves as quartz crystal microbalance humidity layer, which exhibits selectivity rapid response time...
Abstract Metallic and semimetallic mesoporous frameworks are of great importance owing to their unique properties broad applications. However, structures cannot be obtained by the traditional template-mediated strategies due inevitable hydrolytic reaction semimetal compounds. Therefore, it is yet challenging fabricate nanostructures, not even mention controlling pore sizes. Here we develop a facile robust selective etching route synthesize monodispersed antimony nanospheres (MSbNSs). The...
Abstract Surface topographical roughness plays a crucial role in enhancing biological activities by providing biomechanical stability, optimal osseointegration, and torsion resistance. However, the surface impacting on antibacterial cytotoxicity performances are still challenges to implant applications. This study investigates effect of roughening polyethylene terephthalate (PET) using sandpaper prior applying SiO-ZnO nanocomposite coating. Results show that increased from approximately 100...
Emission quenching resulting from fluorophore aggregation has long been a significant challenge in optimizing emission-based technologies, such as fluorescence imaging and optoelectronic devices. Alleviating this aggregates is crucial, yet progress impeded by the limited understanding of nature impact on emission. Here, we elucidate critical role dimeric aggregate (dimer) alleviating second near-infrared (NIR-II, 900-1700 nm) emission ring-fused 4F for superior imaging. Spectral...
The formation of core-shell heterostructures allows direct contact two components for more efficient energy transfer while requires exquisite lattice match. Lattice mismatch is one the most challenging obstacles combining with different phases. In this work, we develop a strategy to overcome limitation and grow α-phase lead halide perovskites (LHPs) onto β-phase lanthanide-doped nanoparticles (LnNPs) by seeding sub-8 nm LnNPs. This LnNP@LHP heterostructure effectively passivates surface...
The efficient Cr<sup>3+</sup> passivated CsPbCl<sub>3</sub>:Mn<sup>2+</sup> perovskite quantum dots were used to enhance the performance of solar cells.
Abstract The optogenetic neuron ablation approach enables noninvasive remote decoding of specific function within a complex living organism in high spatiotemporal resolution. However, it suffers from shallow tissue penetration visible light with low efficiency. This study reports upconversion nanoparticle (UCNP)–based multiplex proteins activation tool to ablate deep‐tissue neurons for locomotion modulation. By optimizing the dopant contents and nanoarchitecure, over 300‐fold enhancement...
All inorganic CsPbBr3 superstructures (SSs) have attracted much research interest due to their unique photophysical properties, such as large emission red-shifts and super-radiant burst emissions. These properties are of particular in displays, lasers photodetectors. Currently, the best-performing perovskite optoelectronic devices incorporate organic cations (methylammonium (MA), formamidinium (FA)), however, hybrid organic-inorganic SSs not yet been investigated. This work is first report...
Lanthanide-doped nanoparticles (LnNPs) show unique optical properties and have been demonstrated in various applications, including imaging, optogenetics, photothermal therapy, photodynamic light-controlled release/cross-linking, anticounterfeiting, lasing, sensing, super-resolution microscopy. One of the key urgent limitations LnNPs is weak narrow absorption lanthanides. Fabrication heterostructures will overcome this hurdle enhance performance LnNPs. Developing novel to lanthanides...