Brenna Bierman
@brennabierman.bsky.social
📤 223
📥 267
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Graduate student in the Rhodes Lab at UW-Madison, materials chemistry
pinned post!
Our work examining SnxTaSe2 is out in
@jacs.acspublications.org
! From a single intercalated TMD growth composition, we find unexpected structural diversity that is not captured by common characterization techniques.
#chemsky
🧪
pubs.acs.org/doi/10.1021/...
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Superconducting Sn-Intercalated TaSe2: Structural Diversity Obscured by Routine Characterization Techniques
Using Sn-intercalated TaSe2 as a model system, we demonstrate the presence of structural heterogeneity captured by single-crystal X-ray diffraction (SCXRD) and scanning transmission electron microscop...
https://pubs.acs.org/doi/10.1021/jacs.5c06808
8 months ago
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reposted by
Brenna Bierman
Philip
20 days ago
My second-to-last PhD paper is out in JOC, and it's one of my favorites! We looked at how flexible tether composition affects bifunctional catalysis. 🧵
#Chemsky
#Catalysis
doi.org/10.1021/acs....
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Bifunctional Catalysis of a Crossed Aldol Condensation by Diamines: Impact of Tether Composition and Length
The crossed aldol condensation between hydrocinnamaldehyde and 2,6-dimethoxybenzaldehyde was used to explore bifunctional catalysis by a set of diamines. The catalytic mechanism appears to involve nuc...
https://doi.org/10.1021/acs.joc.6c00659
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reposted by
Brenna Bierman
Nature
5 months ago
Nature research paper: Observation of a superfluid-to-insulator transition of bilayer excitons
go.nature.com/4alOEkf
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Observation of a superfluid-to-insulator transition of bilayer excitons - Nature
Transition of superfluid to insulator is observed in the layer-imbalanced regime of bilayer magnetoexcitons.
https://go.nature.com/4alOEkf
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reposted by
Brenna Bierman
C&EN (Chemical & Engineering News)
6 months ago
Duplicates of crystal structures are flooding databases, implicating repositories hosting organic, inorganic, and computer-generated crystals. The issue raises questions about curation practices at databases and claims around novelty.
cen.acs.org/research-int...
#chemsky
🧪
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The duplicates that haunt crystallography databases
Researchers call for retraction of two recent <i>Nature</i> studies about AI-generated crystals
https://cen.acs.org/research-integrity/Duplicate-structures-haunt-crystallography-databases/103/web/2025/12?sc=251217_sc_eng_bs_cen
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YSR!
add a skeleton here at some point
7 months ago
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Our work examining SnxTaSe2 is out in
@jacs.acspublications.org
! From a single intercalated TMD growth composition, we find unexpected structural diversity that is not captured by common characterization techniques.
#chemsky
🧪
pubs.acs.org/doi/10.1021/...
loading . . .
Superconducting Sn-Intercalated TaSe2: Structural Diversity Obscured by Routine Characterization Techniques
Using Sn-intercalated TaSe2 as a model system, we demonstrate the presence of structural heterogeneity captured by single-crystal X-ray diffraction (SCXRD) and scanning transmission electron microscop...
https://pubs.acs.org/doi/10.1021/jacs.5c06808
8 months ago
0
15
1
reposted by
Brenna Bierman
National MagLab
10 months ago
"An outstanding accomplishment": The MagLab sets a new world record.
nationalmaglab.org/news-events/...
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reposted by
Brenna Bierman
Philip
10 months ago
My work assessing the effect of preorganization on dihydrazide activity is out in
@jacs.acspublications.org
. We find that dihydrazides with flexible tethers can replicate much of the catalytic activity of complex dihydrazides with preorganized foldamer scaffolds.
#Chemsky
doi.org/10.1021/jacs...
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Bifunctional Catalysis of Aldol Reactions by Foldamer Dihydrazides: Assessment of Conformational Preorganization
We previously reported that molecules containing two cyclic hydrazide units connected by a polymethylene linker could catalyze aldol condensations via a bifunctional mechanism. One hydrazide apparentl...
https://doi.org/10.1021/jacs.5c10914
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reposted by
Brenna Bierman
Nature
10 months ago
A key study claiming to provide evidence of Majorana quasiparticles has received an extensive correction five years after it was published
go.nature.com/45RK3UE
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Controversial quantum-computing paper gets hefty correction — but concerns linger
The journal Science has lifted an expression of concern on a paper claiming evidence of Majorana quasiparticles and added new details.
https://go.nature.com/45RK3UE
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reposted by
Brenna Bierman
Philip
12 months ago
#chemsky
, have you used a Wisconsin Photoreactor? I designed them and will soon defend my PhD. I’d like to include photos of Wisconsin Photoreactors in use by other chemists in my defense. Please share (reply to this post or DM me) a photo of your photoreactor in action!
doi.org/10.1021/acs....
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Versatile Open-Source Photoreactor Architecture for Photocatalysis Across the Visible Spectrum
Adoption of commercial photoreactors as standards for photocatalysis research could be limited by high cost. We report the development of the Wisconsin Photoreactor Platform (WPP), an open-source phot...
https://doi.org/10.1021/acs.orglett.1c01910
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Our work on 2M-WSe2 is out now in Adv. Funct. Mater.!
doi.org/10.1002/adfm...
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Evidence for Topological States and a Lifshitz Transition in Metastable 2M‐WSe2
This study demonstrates the Fermi surface characteristics and transport properties of 2M-WSe2 bulk single crystals. The measurements and first-principles calculations reveal multiple Fermi pockets wi...
https://doi.org/10.1002/adfm.202420356
over 1 year ago
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reposted by
Brenna Bierman
Philip
over 1 year ago
My work on bifunctional organocatalysis of aldol reactions by flexible dihydrazides is out in JACS (
@pubs.acs.org
). I find that hydrazide units connected by long, flexible linkers offer significant rate enhancement relative to monohydrazides.
doi.org/10.1021/jacs...
#ChemSky
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Dual Activation Modes Enable Bifunctional Catalysis of Aldol Reactions by Flexible Dihydrazides
Hydrazides are known to catalyze reactions of α,β-unsaturated aldehydes via transient iminium formation. The iminium intermediate displays enhanced electrophilicity, which facilitates conjugate additi...
https://doi.org/10.1021/jacs.4c16143
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