A5010353087- Quantum Dots Synthesis And Properties
- Perovskite Materials and Applications
- 2D Materials and Applications
- Thermal Expansion and Ionic Conductivity
- Advanced Photocatalysis Techniques
- Solid-state spectroscopy and crystallography
- Copper-based nanomaterials and applications
- Optical properties and cooling technologies in crystalline materials
- Nanocluster Synthesis and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Molecular Junctions and Nanostructures
- Catalytic Processes in Materials Science
- Crystallography and molecular interactions
- Chalcogenide Semiconductor Thin Films
- Surface Chemistry and Catalysis
- Crystallization and Solubility Studies
- Advanced Biosensing Techniques and Applications
- Biosensors and Analytical Detection
- X-ray Diffraction in Crystallography
- Advanced biosensing and bioanalysis techniques
- Microwave Dielectric Ceramics Synthesis
- Plasmonic and Surface Plasmon Research
- Protein Interaction Studies and Fluorescence Analysis
Brown University
2020-2024
John Brown University
2020
Providence College
2020
University of Connecticut
2016-2018
Developing Type-I core/shell quantum dots is of great importance toward fabricating stable and sustainable photocatalysts. However, the application systems has been limited due to strongly confined photogenerated charges by energy barrier originating from wide-bandgap shell material. In this project, we found that through decoration Au satellite-type domains on surface CdS/ZnS dots, such an can be effectively overcome over 400-fold enhancement photocatalytic H2 evolution rate was achieved...
Quantum dots (QDs) with tunable photo-optical properties and colloidal nature are ideal for a wide range of photocatalytic reactions. In particular, QD photocatalysts organic transformations can provide new effective synthetic routes to high value-added molecules under mild conditions. this Perspective, we discuss the advances employing QDs visible-light-driven categorized into net reductive reactions, oxidative redox neutral We then our outlook potential future directions in field:...
Abstract Lead halide perovskite nanocrystals (NCs) have recently drawn considerable attention in the fields of materials science and nanotechnology. However, a major drawback these NCs is reliance on toxic lead, which hinders widespread application. Herein, new class lead‐free NCs, that is, lanthanide double (Ln‐DP) with f‐orbital‐induced optical properties, introduced. The Pr‐, Ce‐, Tb‐, Eu‐, Sm‐, Yb‐based Ln‐DP display narrow d→f f→f emissions ranging from UV‐C to near‐infrared spectral...
The long lifetime of Mn 2+ dopants (∼ms) facilitates charge separation and electron transfer in doped 1D CdS nanorods (NRs) with Pt tips ( i.e. , Mn:CdS-Pt NRs), which significantly enhances photocatalytic water splitting for hydrogen generation.
CuInS2 (CIS) quantum dots (QDs) represent an important class of colloidal materials with broad application potential, owing to their low toxicity and unique optical properties. Although coating a ZnS shell has been identified as crucial method enhance performance, the occurrence cation exchange historically resulted in unintended formation Cu–In–Zn–S alloyed QDs, causing detrimental blueshifts both absorption photoluminescence (PL) spectral profiles. In this study, we present facile one-pot...
Lead-free perovskites and their analogues have been extensively studied as a class of next-generation luminescent optoelectronic materials.
Lead-free perovskite nanocrystals are synthesized by post-synthetic transformation reactions. The transformations show the structural flexibility of zero-dimensional nanocrystal materials.
The synthesis of lead-halide perovskite (LHP) thin nanowires (NWs) has been a challenging task that requires delicate control nanocrystal (NC) nucleation and growth processes. Herein, we present novel ultrathin CsPbBr3 NWs through postsynthetic transformation reaction starting from zero-dimensional Cs4PbBr6 NCs. synthesized averaged 2.5 nm in width tens micrometers length, showing blue photoluminescence with an emission quantum yield 15.2%. Mechanistic studies show the morphology final...
Lead-free double perovskite (DP) nanocrystals (NCs) have emerged as a promising class of nanomaterials with potential applications in various optical and optoelectronic domains. Meanwhile, doping impurity ions into structures represents unique effective means to tailor optimize the properties materials. Herein, we introduce postsynthetic approach fabrication Mn2+-doped Cs2AgInCl6 DP NCs enhanced characteristics. We demonstrate that, reaction, initial surface-doped Mn2+ undergo gradual inward...
Localized surface plasmon resonance (LSPR) arises when light interacts with metallic nanoparticles (NPs). When (NPs) assemble together, the coupling effect between NPs often leads to new features in LSPR of assembled structure. Understanding complex assemblies will greatly benefit development plasmonic devices. Here we demonstrate fabrication a 3D structure using two different sized Au as building blocks. This was achieved by manipulating binding efficiency ligands linking NPs, and proper...
Morphology control of interfaced heterogeneous nanostructure composed two different materials is critical for achieving desired properties the nanostructures. With Au–silica system as a case study, we explored reaction mechanism that controlled number overgrown silica domains on Au nanoparticle seeds. We discovered in our three factors dominated overgrowth gold surface: (a) core size, (b) wettability surface (controlled by amount ligands), and (c) kinetics hydrolysis precursor. In...
Monolayers self-assembled by triphenyleneethynylene (TPE) compounds bearing two terminal alkynyl chains were polymerized Glaser–Hay (G-H) alkyne coupling at the acetonitrile–HOPG interface. The extend into solution due to monolayer's dense-packed morphology. Reacting substructures that have no morphology-determining roles is a potential strategy for preserving monolayer morphology throughout polymerization. Monolayer G-H reaction kinetics and durability characterized using mass spectrometry...