Preguntando se llega a Roma #abuelawisdom

Stopped for a bite at Rodneys Kitchen in Waterloo after a nice rock show by citizen scientists. Great finger food! #comfortfood #Iowa
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So proud of Dr. Yunhua Chen
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Dreaming of Uruguay #Charrúa #Power

Congrats!

Celebrating a couple of recent papers and graduate student research and teaching awards with a little stroll and dinner downtown Ames. Congrats everyone! #iowastatechemistry

Track NASA’s Artemis II Mission in Real Time - NASA As NASA invites the public to follow the Artemis II mission as a crew of four astronauts venture around the Moon inside the agency’s Orion spacecraft, people

www.nasa.gov/missions/art...

This is very important!
Don't shrink yourself. Take up space. Own your worth.
Their feelings about you are on them and not your responsibility.
#MondayMotivation
#mentalhealth
#chemsky #matsky

Dynamic Nuclear Polarization Enhanced 113Cd Solid-State Nuclear Magnetic Resonance Spectroscopy Reveals CdSe Nanocrystals with Triangular Two-Dimensional Projections are Terminated by {100} Facets Surface structure plays an important role in particle growth and determining the chemical and photophysical properties of semiconductor nanocrystals (NCs). Therefore, there is a need for structural tools that can characterize and detect different surface facets. Here, we sought to investigate the structure of {111} CdSe facets by applying dynamic nuclear polarization (DNP) enhanced 113Cd and 77Se solid-state nuclear magnetic resonance (SSNMR) spectroscopy to zinc-blende CdSe NCs that exhibit triangular two-dimensional (2D) projections within transmission electron microscope (TEM) images. It was originally hypothesized in the literature that these CdSe NCs were tetrahedral in shape and terminated by facets from the {111} family of lattice planes of the zinc-blende structure. Surprisingly, we observe 113Cd NMR spectra indicating that the primary facets are from the {100} family of lattice planes. We also obtained DNP-enhanced 113Cd and 77Se SSNMR spectra of recently reported right trigonal bipyramidal (rTriBP) CdSe NCs grown by seeded growth. The 113Cd NMR spectra rTriBP CdSe NCs are consistent with {100} surface facets. TEM images show that rTriBP NCs may also exhibit triangular 2D projections that are similar to the so-called tetrahedral NCs. Based upon these results, we conclude that the so-called tetrahedral NCs are predominantly terminated by {100} surface facets and most likely have the same shape as rTriBP NCs. These results highlight the need for multiple complementary techniques when assigning the shape and surface termination of NCs.

Check out some of our group's latest collaborative work: DNP Enhanced 113Cd Solid-State Nuclear Magnetic Resonance Spectroscopy Reveals CdSe Nanocrystals with Triangular Two-Dimensional Projections are Terminated by {100} Facets | The Journal of Physical Chemistry C pubs.acs.org/doi/10.1021/...

Chemistry labs make tons of plastic waste. Can we recycle it? Chemists and innovative recyclers are trying to turn gloves, pipette tips, and other laboratory plastic waste into something useful

Chemistry labs make tons of plastic waste. Can we recycle it?
Chemists and innovative recyclers are trying to turn gloves, pipette tips, and other laboratory plastic waste into something useful. cen.acs.org/environment/...

Difficult people in your life might make you age faster, study suggests New research suggests that difficult people, a.k.a. “hasslers,” contribute to chronic stress and elevate epigenetic biomarkers associated with aging.

www.washingtonpost.com/wellness/202...

Asteroid-Smashing NASA Mission Sped Up Space Rocks’ Journey Around the Sun

www.nytimes.com/2026/03/06/s...

Silyl Hot-Injection Versus Thiocyanate Heat-Up Synthesis of Chalcohalides: Pushing the Size and Composition Envelope Chalcohalide semiconductors are rapidly gaining traction as stable, biocompatible materials for energy conversion applications. While the solid-state synthesis of bulk chalcohalides is relatively well...

Check out our latest:
Silyl Hot-Injection Versus Thiocyanate Heat-Up Synthesis of Chalcohalides: Pushing the Size and Composition Envelope | Chemistry of Materials' special issue honoring the outstanding contributions of Prof. Mercouri Kanatzidis. pubs.acs.org/doi/10.1021/...

Unsure how many fellow Spanglish scientists share this space, but the term moiety/ies sounds so much to me like mollejas (Spanish for chicken gizzards) #wordchoice

I am with @christinabirkel.bsky.social 👇

#sketchchemistry shenanigans

Orbital parking lots

#chemsky #chemchat

@cenmag.bsky.social

Is this heaven? #IA

Tito Puente - Oye Como Va (Video Oficial) YouTube video by Viva Nation

My feet cannot dance, but my heart does #oyecómová #titopuente #thursdayvibes
www.youtube.com/watch?v=zZQh...

Every person has human dignity regardless of their status. #nocastes

Great halftime show, way better than the game itself so far #badbunny

"Today in Chemistry History" infographic marking Dmitri Mendeleev's birthday (8 Feb 1834). The graphic highlights the date of publication of Mendeleev's first periodic table (1869) and shows the elements that were known at that time and included in the table. It also shows the elements which had yet to be discovered which Mendeleev used his table to predict the properties of.

Dmitri Mendeleev was born #OTD (8 Feb) in 1834. He's known for recognising periodic patterns in the properties of elements, using these to predict the properties of undiscovered elements. And, of course, the periodic table! wp.me/p4aPLT-8UU

#ChemSky 🧪

Crotch-gate: The biggest controversy heading into the Winter Olympics involves … ski jumping? Ski jumping has been pushed into the spotlight after a whistleblower uncovered a cheating scandal that involves, of all things, crotch manipulation.

sports.yahoo.com/olympics/art...

Buñuelos de Viento, Los Buñuelos más Ricos y Esponjosos. Bunyols de les Verges, Recetas Mallorquinas YouTube video by Master Choof

Buñuelos de viento #Fridayvibes
youtu.be/9dDv1PtXoW8?...

I grew up with Alex Pretti The kind-hearted ICU nurse shot by ICE agents was my childhood best friend.

I wrote about my childhood friend Alexi Pretti. Please read it and share it and remember him as a human being. @theverge.com

Women Scientists at the Forefront of Energy Research: Part 8
pubs.acs.org/doi/10.1021/...
Women Energy Researchers share personal reflections that inspired them to engage in energy research and discuss the successful career paths they have taken to become leaders. #Womeninscience #WomeninSTEM

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Probing the Surface Structure of Amine/Chloride-Passivated CdSe Nanocrystals Using Dynamic Nuclear Polarization-Enhanced 15N, 35Cl, 77Se, and 113Cd Solid-State NMR Spectroscopy Ligands have been extensively used to modulate and improve the photophysical properties of nanocrystals (NCs). However, the surface structure of many NCs remains unknown. In this study, we synthesized oleate-capped CdSe NCs, exchanged them with oleylamine/CdCl2, and used dynamic nuclear polarization (DNP)-enhanced solid-state NMR spectroscopy to determine the structure of surface Cd atoms bound to ligands. 113Cd and 77Se NMR experiments distinguish different types of 113Cd and 77Se environments in the CdSe NCs. DNP-enhanced 113Cd magic angle turning (MAT) experiments enable the identification of one bulk and two surface Cd environments in CdSe NCs, while DNP-enhanced 15N{1H} and 15N{113Cd} heteronuclear correlation experiments reveal nitrogen coordinated Cd atoms on the surface of the CdSe NCs. Indirect detection of chloride ligands was achieved using DNP-enhanced 113Cd{35Cl} J-resolved experiments, revealing that the chlorides bridge between surface Cd atoms. Comparing the experimental NMR spectra to relativistic density functional theory calculation models establishes two distinct surface Cd environments that differ by their ligand environments: one site is coordinated by one amine and a bridging chloride, while the other is coordinated by two amines.

Check out our latest: Great work by Anuluxan Santhiran in collaboration with @aaronrossini.bsky.social
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Excited that Md Pavel's recent work on the phase selective synthesis of alkali triel chalcogenide nanocrystals has been selected as a HOT article in @jmaterchem.bsky.social
@jmaterchem.rsc.org

pubs.rsc.org/en/content/a...

Not bad #mindoffthings

Reminds me of the old chalk tiger on the second floor of the old Searle building at the University of Chicago. (Outside Halpern's office.) Did anyone keep a picture of it? #uchicago