Andrew Hunter Davis

ORCID: 0000-0003-3634-6380
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About
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Research Areas
  • Perovskite Materials and Applications
  • Quantum Dots Synthesis And Properties
  • 2D Materials and Applications
  • Advanced Photocatalysis Techniques
  • X-ray Diffraction in Crystallography
  • Radical Photochemical Reactions
  • Lanthanide and Transition Metal Complexes
  • Conducting polymers and applications
  • Crystallization and Solubility Studies
  • Chalcogenide Semiconductor Thin Films
  • Magnetism in coordination complexes
  • Catalytic C–H Functionalization Methods
  • Carbon Nanotubes in Composites
  • Oxidative Organic Chemistry Reactions
  • Near-Field Optical Microscopy
  • Microfluidic and Capillary Electrophoresis Applications
  • Supramolecular Self-Assembly in Materials
  • Advanced NMR Techniques and Applications
  • Patient Satisfaction in Healthcare
  • Catalytic Processes in Materials Science
  • Migration, Aging, and Tourism Studies
  • Sulfur-Based Synthesis Techniques
  • Metal-Catalyzed Oxygenation Mechanisms
  • Sperm and Testicular Function
  • Acoustic Wave Resonator Technologies

Syracuse University
2017-2021

Slippery Rock University
2016-2021

Battelle
2016

Murray State University
2016

United States Department of Veterans Affairs
1993

Abstract Inherent poor stability of perovskite nanocrystals (NCs) is the main impediment preventing broad applications materials. Here, TiO 2 shell coated CsPbBr 3 core/shell NCs are synthesized through encapsulation colloidal with titanium precursor, followed by calcination at 300 °C. The nearly monodispersed /TiO show excellent water for least three months size, structure, morphology, and optical properties remaining identical, which represent most water‐stable inorganic passivated...

10.1002/adfm.201704288 article EN Advanced Functional Materials 2017-11-06

The introduction of dopants plays a key role in the physical properties semiconductors for optoelectronic applications. However, doping is generally challenging nanocrystals (NCs), especially two-dimensional (2D) NCs, due to self-annealing effect and high surface energies required dopant addition. Here, we report an efficient strategy Mn-doped 2D CsPbCl3 (i.e., Mn:CsPbCl3) nanoplatelets (NPLs) through postsynthetic solvothermal process. While original lightly doped Mn:CsPbCl3 NPLs were...

10.1021/acs.chemmater.8b02657 article EN Chemistry of Materials 2018-08-23

Shape control is critical and offers an efficient way to tune the properties of nanocrystals (NCs). Here we present growth two-dimensional (2-D) all-inorganic CsPbX3 (X = Cl, Br, I) perovskite NCs through assembly corresponding 1-D nanorods (NRs) under solvothermal conditions. Both 2-D nanoplatelets (NPLs) nanosheets (NSs) with a wide lateral size range from ∼100 nm ∼1 μm thickness few unit cells can be obtained by reaction time. The work provides general strategy for rational fabrication...

10.1021/acs.chemmater.8b01283 article EN Chemistry of Materials 2018-05-22

Manganese-doped cesium lead chloride (CsPbCl3) perovskite nanocrystals (NCs) have recently garnered attention because of their unique magneto-optical properties, giving them potential in a variety optoelectronic applications. One common method to dope Mn2+ into host CsPbCl3 NCs is through postsynthetic ion exchange reaction. However, most strategies utilize Mn2+-containing precursor solution, which adds limitations the reaction due compatibility and stability issues. Here, we report new...

10.1021/acs.chemmater.9b05082 article EN Chemistry of Materials 2020-02-26

The ability to dope transition-metal ions into semiconductor nanocrystals (NCs) allows for the introduction and exploitation of new extrinsic properties in original intrinsic material. Although synthesis doped zero-dimensional quantum dots one-dimensional nanorods/nanowires has been widely reported, ion-doped two-dimensional (2D) NCs have less explored. In this study, we developed a one-pot Mn2+-doped 2D CdS (i.e., Mn:CdS) nanoplatelets (NPLs). Successful Mn doping inside NPL lattice was...

10.1021/acs.chemmater.9b00006 article EN Chemistry of Materials 2019-03-18

Selective cleavage of C–C bonds can be a valuable tool for various applications including polymer degradation and biomass utilization. Performing chemical transformations involving bond steps under mild conditions ambient temperature remains challenging due to the high dissociation energies bond. This fundamental challenge solved by coupling dye-sensitized photoelectrochemical cell (DSPEC) system, that generally targets water splitting reaction, with hydrogen atom transfer (HAT) mediator...

10.1021/acscatal.1c00198 article EN ACS Catalysis 2021-03-11

To gain a better understanding of electronic cigarette (e-cigarette) use behavior and experience among adult e-cigarette users, with the goal informing development future measures.Between August October 2014 six focus groups were conducted in Seattle. Participants (63% male; 60% >35 years old; White): users who used combustible tobacco products either currently or past. E-cigarette discussion topics covered: their daily pattern (eg, frequency), product-related characteristics nicotine...

10.1093/ntr/ntw175 article EN Nicotine & Tobacco Research 2016-07-13

A family of DyX4M(12-MCMnIII(N)shi-4) compounds were synthesized and magnetically characterized (X = salicylate, acetate, benzoate, trimethylacetate, M NaI or KI). The bridging ligands systematically varied while keeping the remainder MC-geometry constant. type monovalent cation, necessary for charge balance, was also altered. dc magnetization susceptibility all similar across series. Regardless identity countercation, Dy(Hsal)4M 12-MC-4 only to show frequency-dependent ac magnetic...

10.1021/acs.inorgchem.6b01832 article EN Inorganic Chemistry 2016-10-05

Transition metal ion doped one-dimensional (1-D) nanocrystals (NCs) have advantages of larger absorption cross sections and polarized emissions in comparison to 0-D NCs. However, direct synthesis 1-D nanorods (NRs) or nanowires (NWs) has proven challenging. In this study, we report the Mn-doped ZnSe NWs using a colloidal hot-injection method shell passivation for core/shell with tunable optical properties. Experimental results show properties are controlled by composition thickness lattice....

10.1021/acsnano.7b06773 article EN ACS Nano 2017-11-26

We developed a facile photoinduced disproportionation approach to generate radical anions of pyrrole derivatives for the reduction aryl halides, as well formation desired heterocyclic product without addition any photocatalysts.

10.1039/c9gc04248b article EN Green Chemistry 2020-01-01

An extremely facile ligand-mediated synthesis of 2D CsPbX 3 (X = Cl, Br, or mixture thereof) nanoplatelets (NPLs) and Mn-doped NPLs was developed in an open vessel under ambient conditions, which is potentially scalable toward industrial applications.

10.1039/d1tc02931b article EN Journal of Materials Chemistry C 2021-01-01

Doping through the incorporation of transition metal ions allows for emergence new optical, electrical, and magnetic properties in quantum dots (QDs). While dopants can be introduced into QDs many synthetic methods, control dopant location host–dopant (H–D) coupling directional movement is still largely unexplored. In this work, we have studied behaviors Mn:CdS/ZnS core/shell found that transport behavior very sensitive to temperature microenvironments within QDs. The migration Mn toward...

10.1021/acs.jpclett.0c01861 article EN The Journal of Physical Chemistry Letters 2020-07-07

Bond cleavage reactions including that of C–C and C–O bonds are important to the chemical industry organic chemistry. Performing this transformation under mild conditions (e.g., room temperature, solar light) can benefit both selectivity yield targeted products. This manuscript describes a simple one-pot approach used carry out Cα–Cβ/Cβ–O σ-bond using photocatalytic nanoparticles afford products in excellent yields at temperature with visible-light illumination. We synthesized carboxylic...

10.1021/acsanm.1c03622 article EN ACS Applied Nano Materials 2021-12-30

Dynamic materials have been given an increased amount of attention in recent years with expectation that they may exhibit properties on demand. Especially, the combination fluorescent quantum dots (QDs) and light-responsive organic switches can generate novel photo-switchable for diverse applications. In this work, a highly reversible dynamic hybrid system is established by mixing dual-color emitting Mn-doped CdS-ZnS diarylethene molecules. We show...

10.3389/fchem.2019.00145 article EN cc-by Frontiers in Chemistry 2019-03-20

A measure of client satisfaction is an important component any program evaluation, but little has been done to assess the residents residential care homes with major services and environmental factors. In this descriptive study, 256 a com munity in Augusta, Georgia, were surveyed about their level 14 The overall ratings revealed high all However, survey age-related differences levels satisfaction. Older more satisfied location home, number security belongings, available activities, volunteer...

10.1177/104973159300300106 article EN Research on Social Work Practice 1993-01-01
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