Christopher B. Whitehead
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View article: Incorporating Gold Nanoparticles with Varying Diameters into Freely Floating Nanosheets via a Biphasic Monolayer Adsorption Assembly Mechanism
Incorporating Gold Nanoparticles with Varying Diameters into Freely Floating Nanosheets via a Biphasic Monolayer Adsorption Assembly Mechanism Open
Peptoid nanosheets are versatile two-dimensional nanomaterials that can form through the assembly and collapse of peptoid monolayers at fluid interfaces. The resulting material freely floats in water due to its hydrophilic exterior (which …
View article: From Kinetics to Molecular-Level Insights into Group 4 Metal Oxide Nanocrystal Synthesis
From Kinetics to Molecular-Level Insights into Group 4 Metal Oxide Nanocrystal Synthesis Open
Kinetic control is a powerful tool for traversing the chemical landscape toward the intended product. For group 4 metal oxide nanocrystals, the development of complex multimetallic heterostructures is still a challenge, partly due to the l…
View article: Kinetic analysis of Group 4 Metal Oxide Nanocrystal synthesis in the presence of phosphine oxide ligands
Kinetic analysis of Group 4 Metal Oxide Nanocrystal synthesis in the presence of phosphine oxide ligands Open
Kinetic control is a powerful tool for traversing the chemical landscape towards the intended product. For group 4 metal oxide nanocrystals, the development of complex multimetallic heterostructures is still a challenge, partly due to the …
View article: Estimating reaction parameters in mechanism‐enabled population balance models of nanoparticle size distributions: A Bayesian inverse problem approach
Estimating reaction parameters in mechanism‐enabled population balance models of nanoparticle size distributions: A Bayesian inverse problem approach Open
In order to quantitatively predict nano‐ as well as other particle‐size distributions, one needs to have both a mathematical model and estimates of the parameters that appear in these models. Here, we show how one can use Bayesian inversio…
View article: Particle formation mechanisms supported by <i>in situ</i> synchrotron XAFS and SAXS studies: a review of metal, metal-oxide, semiconductor and selected other nanoparticle formation reactions
Particle formation mechanisms supported by <i>in situ</i> synchrotron XAFS and SAXS studies: a review of metal, metal-oxide, semiconductor and selected other nanoparticle formation reactions Open
Following the definition of and four primary criteria for obtaining reliable, disproof-based mechanisms of particle formation, 74 literature papers utilizing synchrotron XASF and SAXS are analyzed with an emphasis on 8 case studies.
View article: LaMer's 1950 model of particle formation: a review and critical analysis of its classical nucleation and fluctuation theory basis, of competing models and mechanisms for phase-changes and particle formation, and then of its application to silver halide, semiconductor, metal, and metal-oxide nanoparticles
LaMer's 1950 model of particle formation: a review and critical analysis of its classical nucleation and fluctuation theory basis, of competing models and mechanisms for phase-changes and particle formation, and then of its application to silver halide, semiconductor, metal, and metal-oxide nanoparticles Open
Are classical nucleation theory and the 1950 LaMer model of particle formation supported for a wide range of particle formations, or do competing models in the form of chemical reaction mechanisms have better experimental support? Read on …
View article: Particle Size Distributions via Mechanism-Enabled Population Balance Modeling
Particle Size Distributions via Mechanism-Enabled Population Balance Modeling Open
Mechanism-enabled population balance modeling (ME-PBM) was recently defined as the use of experimentally established (i.e., disproof-based, deliberately minimalistic, and pseudo-elementary step-based) mechanisms as more rigorous input for …
View article: Mechanism-Enabled Population Balance Modeling of Particle Formation en Route to Particle Average Size and Size Distribution Understanding and Control
Mechanism-Enabled Population Balance Modeling of Particle Formation en Route to Particle Average Size and Size Distribution Understanding and Control Open
The concept of Mechanism-Enabled Population Balance Modeling (ME-PBM) is reported, illustrated by its application to a prototype Ir(0)n nanoparticle formation reaction. ME-PBM is defined herein as the use of now available, experimentally e…
View article: LaMer’s 1950 Model for Particle Formation of Instantaneous Nucleation and Diffusion-Controlled Growth: A Historical Look at the Model’s Origins, Assumptions, Equations, and Underlying Sulfur Sol Formation Kinetics Data
LaMer’s 1950 Model for Particle Formation of Instantaneous Nucleation and Diffusion-Controlled Growth: A Historical Look at the Model’s Origins, Assumptions, Equations, and Underlying Sulfur Sol Formation Kinetics Data Open
A look back at LaMer's 1950 model of particle formation is undertaken (LaMer, V. K.; Dinegar, R H. Theory, Production and Mechanism of Formation of Monodispersed Hydrosols. J. Am. Chem. Soc. 1950, 72, 4847-4854), a highly cited paper that …