A5051300329- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Synthesis and characterization of novel inorganic/organometallic compounds
- Additive Manufacturing Materials and Processes
- 2D Materials and Applications
- Welding Techniques and Residual Stresses
- MXene and MAX Phase Materials
- Perovskite Materials and Applications
- Organophosphorus compounds synthesis
- Pharmacological Effects and Toxicity Studies
- Chalcogenide Semiconductor Thin Films
- Organometallic Complex Synthesis and Catalysis
- Thermal properties of materials
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Laser-induced spectroscopy and plasma
- Epilepsy research and treatment
- Quantum Dots Synthesis And Properties
- Diamond and Carbon-based Materials Research
- Click Chemistry and Applications
- Nanowire Synthesis and Applications
- Advanced Photocatalysis Techniques
- Carbon Nanotubes in Composites
- Coordination Chemistry and Organometallics
- Catalytic Cross-Coupling Reactions
- Synthesis and Catalytic Reactions
University of North Texas
2020-2024
Texas State University
2012-2017
P-cing it together: Carbonyl-decorated carbenes readily activate white phosphorus to afford carbene-stabilized P4 and P8 clusters. Mechanistic evidence suggests the cluster (see structure from X-ray diffraction: C gray, P orange, N blue, O red) forms by a [2+2] cycloaddition of transient diphosphene species.
Two 6-methoxy-4-oxo-1,3-diaryl-3,4-dihydropyrimidinium salts (2a and 2b) have been prepared as precursors to novel amino-acrylamido carbenes. Treatment of 2a (where the aryl groups are mesityl groups) with one equivalent sodium hexamethyldisilazide in aromatic hydrocarbons affords persistent carbene 3a, which has characterized spectroscopically. This trapped Ir(I) transition metal fragments well electrophilic carbon disulfide nucleophilic isocyanides. Infrared spectroscopic studies carried...
Paarbildung: Carbene mit Carbonylgruppen aktivieren weißen Phosphor sehr effektiv und liefern so carbenstabilisierte P4- P8-Cluster. Mechanistische Belege sprechen dafür, dass der P8-Cluster (siehe Röntgenbeugungsstruktur: C grau, P gelb, N blau, O rot) das Ergebnis [2+2]-Cycloaddition einer intermediären Diphosphenspezies ist. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed may be re-organized...
This study presents novel in-situ monitoring of the melting pool behavior and ex-situ inspection heat-affected softening in gallium metal using an ultrasonic technique. In laser welding additive manufacturing process, understanding pool's is necessary but challenging. Optical, thermal, radiational imaging methods provide valuable information are limited due to lack depth material properties information. An time flight measurement technique numerically experimentally used laser-induced pools,...
Very recently, the synthesis of 2D MoS2 and WS2 through pulsed laser-directed thermolysis can achieve wafer-scale large-area structures, in ambient conditions. In this paper, we report oxides from (NH4)2MoS4 film using a visible continuous-wave (CW) laser at 532 nm, instead infrared for thermolysis. The is prepared by dissolving its crystal powder DI water, sonicating solution, dip-coating onto glass slide. We observed intensity threshold MoS2, however, it occurred narrow range. Above that...
Encapsulating Cs
Abstract It is reported that chemical vapor deposition (CVD) grown bilayer (BL) MoS 2 films are significantly more structurally stable in ambient air than CVD‐grown monolayer (ML) have been to degrade air. The authors present atomic force microscopy (AFM) images of preheated and as‐grown ML multilayer after exposure for periods up years. AFM show that, air, BL thicker‐layer do not exhibit the growth dendrites characteristic degradation. Dendrites observed stop at ML‐BL boundary. Raman...
Studies are reported of the thermal conductivity () for a supported ~1 µm thick diamond membrane. Near-ultraviolet micro-Raman spectroscopy is used to map temperature rise produced in by micro-fabricated heater and hexagonal boron nitride micro/nano-particles which dispersed on surface as local sensors. Thermal determined analytically from Raman also fitting data via simulation, using Monte Carlo optimization approach. The low value obtained , W m−1 · K, attributed nanocrystalline grain...
Abstract The present work highlights the role of halogen compounds in modifying shape InSb nanostructures, while maintaining a high crystalline quality nanostructures. One-dimensional (1D) nanowires (NWs) and two-dimensional (2D) nanoplatelets (NPLs) were synthesized by ambient pressure chemical vapor deposition. Our experimental results suggest that at critical growth temperature 512 ∘ C, NWs grow traditional vapor–liquid–solid mechanism when gold (Au) nanoparticles are used to initiate on...
We report that chemical vapor deposition (CVD) grown bilayer and thicker-layered MoS2 are structurally optically stable under ambient conditions, in comparison to CVD-grown monolayer other transition metal dichalcogenides (TMDs) have been reported degrade the same hindering their many potential applications. present atomic force microscopy (AFM), Raman photoluminescence (PL) spectroscopy measurements of as-grown preheated multilayer after exposure conditions for periods up 2 years. The AFM...
Das Zusammenfügen eines Carbonyl-funktionalisierten Carbens mit P4 ergibt zwei kurzlebige Diphosphene (Puzzleteile im Vordergrund), die schnell zu einem P8-Allotrop dimerisieren (Röntgenstruktur). Nucleophile Carbene stabilisieren bekanntlich Hauptgruppenallotrope, und T. W. Hudnall et al. zeigen nun in ihrer Zuschrift auf S. 4558 ff., wie Elektrophilie von Carbenen Reaktivität bezüglich bestimmt. Durch Veränderung der lassen sich Allotrope Phosphor isolieren charakterisieren.