Andreas Vargas Jentzsch

L'équipe PulSAr du laboratoire @MOLTECH_Anjou, unité mixte de recherche @CNRSchimie et @UnivAngers, cherche le prochain ou la prochaine chimiste CNRS de son équipe !(Reposts très appréciés)
#ChimieSupra #SystemesStimulables @suprascf.bsky.social

Simple advise, good advice. Get good at being human :)

A Supramolecular Nanosheet Assembled from Carpyridines and Water The use of water as a solvent to facilitate supramolecular self-assembly and polymerization is well-documented; however, it is rare that water acts as a monomer that undergoes polymerization. We repor...

Great start to the week with our latest carpyridine findings out in @jacs.acspublications.org! Water and carpys now self-assemble together, forming linear stacks as revealed by micro-ED. Check it out: doi.org/10.1021/jacs...
@michelrickhaus.bsky.social @avj-chem.bsky.social @rickhauslab.bsky.social

A Supramolecular Nanosheet Assembled from Carpyridines and Water The use of water as a solvent to facilitate supramolecular self-assembly and polymerization is well-documented; however, it is rare that water acts as a monomer that undergoes polymerization. We repor...

Water impacts self-assembly. But what changes really?
In our latest @jacs.acspublications.org at 🇨🇭UNIGE, we ferret out vastly different organisations in wet vs dry solvents that lead to identical macrostructures
👉 doi.org/10.1021/jacs.4c17024 #pisky #chemsky
@rickhauslab.bsky.social

New #Nature_cover for @avj-chem.bsky.social and @sabine-richert.bsky.social !

I depicted photoresponsive dyads💡⚡ The orange accent - unpaired electron spins. Light triggers spin-correlated radical–triplet pairs that form a quartet state. The lightnings symbolize hydrogen bonds ⚛️

Congrats! Enjoy the German scientific landscape!

I’m excited to share that I will be moving to the University of Ulm as a junior group leader and I have a fully-funded open PhD position co-supervised by me and Max von Delius @mvdelius.bsky.social . Apply at benjamin.roberts@unipd.it, any shares would be appreciated!

www.bmwrlab.com/work-with-us

I am super exited to share the publication hashtag#openaccess of our paper “Automated Research Platform for Development of Triplet−Triplet Annihilation Photon Upconversion Systems” published in
@acs.org Central Science

pubs.acs.org/doi/10.1021/...

🌀⚛️Quantum Research: Can spin communication in photoexcited chromophore–radical systems be promoted by non-covalent bonds?
👇
https://buff.ly/4jOJgsQ

Les inscriptions aux “Journées de Chimie Supramoléculaire” JCS2025 sont maintenant ouvertes (gratuit mais obligatoire pour les étudiants, doctorants et post-doctorants) jcs2025.sciencesconf.org

La chimie supramoléculaire pour les technologies quantiques L’objet élémentaire de mémoire d’ordinateur, appelé bit, peut présenter deux états : 0 ou 1.

www.inc.cnrs.fr/fr/cnrsinfo/...

Supramolecular dyads as photogenerated qubit candidates - Nature Chemistry Molecular approaches in quantum information science are highly promising, but the synthesis and scale-up of suitable covalently linked moieties represent major challenges. Here it is demonstrated that...

Supramolecular dyads as photogenerated qubit candidates, from Andreas Vargas Jentzsch @avj-chem.bsky.social, Sabine Richert @sabine-richert.bsky.social, and their team.

www.nature.com/articles/s41...
#chemsky

Supramolecular dyads as photogenerated qubit candidates - Nature Chemistry Molecular approaches in quantum information science are highly promising, but the synthesis and scale-up of suitable covalently linked moieties represent major challenges. Here it is demonstrated that...

Does supramolecular chemistry hold the key for the scale-up of molecular spin qubits?
Very happy and proud to see this paper finally out in @naturechemistry.bsky.social.
True teamwork with my favourite collaborator @avj-chem.bsky.social.
www.nature.com/articles/s41...

Supramolecular dyads as photogenerated qubit candidates Nature Chemistry - Molecular approaches in quantum information science are highly promising, but the synthesis and scale-up of suitable covalently linked moieties represent major challenges. Here...

In case you have no access, you can use this link:
rdcu.be/d7ErH to read it

Supramolecular dyads as photogenerated qubit candidates - Nature Chemistry Molecular approaches in quantum information science are highly promising, but the synthesis and scale-up of suitable covalently linked moieties represent major challenges. Here it is demonstrated that...

🚨Fresh out🚨
We're especially proud of this one: Supramolecular chemistry lends a helping hand in developing new photo-generated molecular qubits. A fantastic collaboration with the @sabine-richert.bsky.social group!

www.nature.com/articles/s41...

Light-Harvesting Spin Hyperpolarization of Organic Radicals in a Metal–Organic Framework Light-driven spin hyperpolarization of organic molecules is a crucial technique for spin-based applications such as quantum information science (QIS) and dynamic nuclear polarization (DNP). Synthetic chemistry provides the design of spins with atomic precision and enables the scale-up of individual spins to hierarchical structures. The high designability and extended pore structure of metal–organic frameworks (MOFs) can control interactions between spins and guest molecules. However, the effective design of polarizing radical electron spins by photoexcitation in MOFs has been unexplored. Here, we show that it is possible to effectively hyperpolarize radical electron spins by harvesting mobile excitons in MOFs. As a proof of concept, we introduce 4-carboxy TEMPO molecules as electron spins into MOF-525, which contains an array of porphyrin chromophores, and demonstrate that this light-harvesting MOF system generates a spin-polarized excited quartet state and doublet ground state even by doping a small amount of electron spins. The current material design leads to the creation of highly spin-polarized nanospaces that can be used for quantum sensing and DNP by efficiently generating high-spin polarization in MOFs doped with small amounts of electron spins to prevent spin relaxation.

Cool!

pubs.acs.org/doi/10.1021/...

We have about 2-4 postdoc positions available per year, applications are welcome anytime, please see www.unige.ch/sciences/chi...

Somehow disagree: the main reason everyone uses DFT has nothing to do with accuracy or else, but simply because it is available everywhere. Absolutely everywhere. Which is, incidentally, its biggest issue as well.

That video? There is no way I‘m the only one intrigued?

Power Strokes in Molecular Motors: Predictive, Irrelevant, or Somewhere in Between? For several decades, molecular motor directionality has been rationalized in terms of the free energy of molecular conformations visited before and after the motor takes a step, a so-called power stroke mechanism with analogues in macroscopic engines. Despite theoretical and experimental demonstrations of its flaws, the power stroke language is quite ingrained, and some communities still value power stroke intuition. By building a catalysis-driven motor into simulated numerical experiments, we here systematically report on how directionality responds when the motor is modified accordingly to power stroke intuition. We confirm that the power stroke mechanism generally does not predict motor directionality. Nevertheless, the simulations illustrate that the relative stability of molecular conformations should be included as a potential design element to adjust the motor directional bias. Though power strokes are formally unimportant for determining directionality, we show that practical attempts to alter a power stroke have side effects that can in fact alter the bias. The change in the bias can align with what power stroke intuition would have suggested, offering a potential explanation for why the flawed power stroke mechanism can retain apparent utility when engineering specific systems.

If you've ever read about molecular motors, you've probably wondered about "power strokes." We looked into that by simulating a catalysis-driven molecular motor explicitly 🧐

I am super happy to share my latest work with Alex, Geyao, and Todd @nuchemistry.bsky.social

pubs.acs.org/doi/10.1021/...

Determination of exchange coupling constants in the electronic ground and excited states of molecular multi-spin systems The interaction between unpaired electrons determines the magnetic properties of molecular materials and consequently their applicability. In particular, for ap

Interested in exchange interactions? Our new review article is now online: doi.org/10.1063/5.02...

My group is currently looking for a PhD candidate as well as an EPR lab manager. If you know anybody who could be interested, please encourage them to contact me by email.

a rainbow is coming out of a triangle in the dark ALT: a rainbow is coming out of a triangle in the dark

Awesome!

There are not so many of us yet. Depending on the definition of suprachem :)

To be honest, I never really looked into it, literally. They were all different, so I guess you cannot do anything wrong.

Okay, time for a quick introduction for #chemsky

I'm Guillermo, and since 2022, I've been an assistant professor in the amazing city of Strasbourg, working on the intersection between coacervates and supramolecular / systems chemistry

Looking at that chart, there are quite some wines I need to taste… and mind you that my students from Rumania keep only bringing >50% drinks when the go back for holidays!

Absurdly easy to use, no learning curve involved. Don’t hesitate, if water content is important for your research, there is no better solution. At all.

Highly recommended, very reliable. But don’t abandon you machine years in the cupboard and expect it to work :)