Kevin Stewart
@KA_Stew
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Postdoctoral Associate - University of Utah; PhD Organic Chemistry - University of Florida
Joined December 2020
This footage from inside the eye of Category 5 Hurricane Melissa might be the most jaw-dropping video ever captured of a hurricane’s eye, showcasing the infamous “stadium effect."
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Proud of this one with co-first author @lehothi (who crushed it): pushing PISA beyond a chemistry curiosity into a potent strategy for bulk materials design—embedding reactive nanospheres in associative networks for enhanced creep resistance.@LowDispersity
advanced.onlinelibrary.wiley.com
This study introduces a materials design strategy that embeds spherical nanoparticles derived from polymerization-induced self-assembly (PISA) into recyclable networks to significantly reduce...
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A little teaser (preprint) of next things to come from postdoc work at Utah in @LessardLab. Wish us safe travels as we navigate peer review. https://t.co/jq38QCWdCM
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First post-doc work is out! See how we tune inhibition to access frontally polymerized materials with multiple levels of compositional control (molecular weight, microstructure, monolith patterning). Stay tuned for more.
Our first paper on controlling molecular weight in Frontal Polymerization is live as Hot Paper in Angew. Chem. Check is out! @KA_Stew @JacobJLessard1 @angew_chem
https://t.co/uSwnLcx2Gw
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In this work, we harness plasticizing pendent groups on fully styrenic, ultrahigh molecular weight backbones to achieve tunable degrees of polymer entanglement and elasticity. @ACSPublications @LowDispersity @Brent_Sumerlin @AustinMEvans
pubs.acs.org
We report a method to produce ultrahigh-molecular-weight (UHMW, >106 Da) styrenic polymers with tunable entanglement molecular weights (Me). The high number of primary chain entanglements (≫10)...
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Congratulations to @lehothi for his recent publication in ACS Macro Letters! Grateful to be a part of this work wherein polyolefins are photochemically degraded using straightforward, mild, and cost-effective additives. @ACSPublications @LowDispersity
https://t.co/2eS24OgOdw
pubs.acs.org
Photoactivation of nitroarenes has been recently reported to induce the transformation of alkenyl bonds into carbonyl functionalities. Capitalizing on this unique photochemical mechanism, this study...
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Check out our paper hot off the press! One of my last (co)1st author papers from postdoc. https://t.co/2R7d5bqKp8
pubs.acs.org
Frontal ring-opening metathesis polymerization (FROMP) offers an energy-efficient method for manufacturing high-performance thermoset resins. However, the background reaction attributed to ring-ope...
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Our storied return to @ChemicalScience this year is out now! Former visiting student #Kris and team developed a one-step, light-mediated approach for the formation of polyelectrolyte complex films! @Brent_Sumerlin @VISTEC_Thailand
pubs.rsc.org
Thin films formed by complexation of oppositely charged polyelectrolytes have significant potential in applications such as separation membranes, biocompatible or anticorrosion coatings, and drug...
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Happy to be working together on degradable bottlebrushes with this talented first-year PhD student, @ILevkovsky, and excited to see our first paper out from the @MatyPolymerLab!
pubs.acs.org
Bottlebrush (BB) polymers, with their densely grafted side chains and unique architecture, are highly advantageous for drug delivery due to their high functional group density for drug conjugation,...
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In this work, we demonstrate that depolymerization has utility beyond polymer recycling by "sculpting" molecular weight distribution, enabling reprogrammable viscoelasticity and encryption of data. @UFChemistry @ACSPublications @LowDispersity
https://t.co/eTB171vjOi
pubs.acs.org
Chain-end reactivation of polymethacrylates generated by reversible-deactivation radical polymerization (RDRP) has emerged as a powerful tool for triggering depolymerization at significantly milder...
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A straightforward method for achieving modular polyimine vitrimers from partially bioderived polystyrene copolymers/crosslinkers. A special thank you to a slew of talented undergraduate (and highschool!) mentees for all their hard work on this project.
pubs.acs.org
Thermoset polymers, known for their robust thermomechanical and chemical durability, suffer from poor recyclability due to their covalent cross-linking. This study explores the tunability of covalent...
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Super stoked to have been a small part of this super cool paper on FP patterning just published in @Nature. Huge congrats to the team and especially Justine for exceptional work! @Mechanophore
@BeckmanIllinois Press Release https://t.co/fVWN3I3rE3 Paper:
nature.com
Nature - Frontal polymerization spin mode dynamics is used to autonomously fabricate patterned crystalline domains in poly(cyclooctadiene) with multiscale organization.
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Some really cool predictive FROMP modeling. Was a fun project to be apart of! Check it out!
pubs.acs.org
Frontal ring-opening metathesis polymerization (FROMP) involves a self-perpetuating exothermic reaction, which enables the rapid and energy-efficient manufacturing of thermoset polymers and composi...
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Has anyone ever wished they could degrade specific sections of a polymer on demand? Probably not, but we did it anyway - Check out Phuong's work on remote-controlled polymer degradation in @ChemSci. Enabled by @QUTmaterials and @ANSTO !
pubs.rsc.org
The advent of reversible deactivation radical polymerization (RDRP) revolutionized polymer chemistry and paved the way for accessing synthetic polymers with controlled sequences based on vinylic...
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Thrilled to announce our latest research-integrating squaramide into supramolecular cross-linked polymers! @MacroJrnls_ACS
https://t.co/1xjtxpSdIb A massive shoutout to the incredible team for making this happen.@KA_Stew @Brent_Sumerlin @LowDispersity @UFChemistry
pubs.acs.org
Thermoplastics, while advantageous for their processability and recyclability, often compromise thermochemical stability and mechanical strength compared to thermosets. Addressing this limitation, we...
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Huey Lewis said it best: It's hip to be square. Great work led by @Konar_Deb showcasing how primary chain squaramide units can be leveraged to form supramolecular polymer networks through intermolecular hydrogen bonding. @Brent_Sumerlin @ACSMacroLett
pubs.acs.org
Thermoplastics, while advantageous for their processability and recyclability, often compromise thermochemical stability and mechanical strength compared to thermosets. Addressing this limitation, we...
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In our new manuscript @ACSPublications, we resolve the topography of nucleic acid-collagen complexes down to the nanoscale using #AFM and explore the effect of single-stranded DNA to collagen’s native properties and structure! 📖 Read here: https://t.co/2UUqCXZk23
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