Kjell Jorner
@valencekjell.com
1K followers 610 following 100 posts
Assistant Professor of Digital Chemistry at @ethzurich.bsky.social. Making chemistry more sustainable within NCCR Catalysis. Views my own. https://dcl.ethz.ch https://www.valencekjell.com
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valencekjell.com
Indeed! My favorite sentence is: "Since satisfactory programs for the computation of σ-system energies such as those described by Wiberg or by Hendrickson were not available to us, the systems were treated by hand calculation." 💪 Shows that Allinger was trained as an organic chemist 😉
valencekjell.com
To me, it is quite mysterious how the seminal contributions of Allinger were passed by. This year, it is gratifying to see that the contributions of Robson have been recognized, even though he is (today) not as well known at the other awardees on the international scene.
valencekjell.com
This QM/MM combination of methods was already used by Allinger and co-workers in 1967 and elaborated in subsequent work. This paper is actually cited by the scientific document, but without mentioning the use of QM/MM. As a peer reviewer, I would recommend major revisions 😉
doi.org/10.1021/ja01...
The Calculated Electronic Spectra and Structures of Some Cyclic Conjugated Hydrocarbons1,2
CONTENT TYPES
doi.org
valencekjell.com
The seminal contribution of Warshel and Karplus from 1972 is listed as the first combination of QM (the PPP method) and MM (a classical force field) for "complex systems". A few years ago, I had the pleasure of myself working with the PPP method and reading the extensive literature on the topic.
valencekjell.com
One of the areas where I would feel more competent is for the 2013 Prize on multi-scale modeling. I remember these worthy prize winners well, as I had the honor of receiving a prize for my MSc thesis from the hands of Levitt and Warshel when they visited Uppsala

www.nobelprize.org/prizes/chemi...
Nobel Prize in Chemistry 2013
The Nobel Prize in Chemistry 2013 was awarded jointly to Martin Karplus, Michael Levitt and Arieh Warshel "for the development of multiscale models for complex chemical systems"
www.nobelprize.org
valencekjell.com
One nice aspect of the Nobel Prize that not everyone knows is that they actually publish a short scientific document explaining the contributions of the Prize winners. The one for MOFs can be found below. As such, we can actually do "peer review" of the prizes 🧐 www.nobelprize.org/prizes/chemi...
Nobel Prize in Chemistry 2025
The Nobel Prize in Chemistry 2025 was awarded jointly to Susumu Kitagawa, Richard Robson and Omar M. Yaghi "for the development of metal–organic frameworks"
www.nobelprize.org
valencekjell.com
Interesting angle, but I got the impression that they got it more for the conceptual approach rather than improving any specific reaction. (Not my field though.)
valencekjell.com
Excellent Nobel Prize. My suggestion for next year: chemical engineering. Nobel himself was an engineer, and the prize awards achievements that "conferred the greatest benefit to humankind". Furthermore, the Prize should also be given to "improvements". When did that happen the last time?
palliunsw.bsky.social
Indeed! Great day for Aussie chemistry. Richard Robson's work is finally being properly recognised. Congratulations also to Kitagawa and Yaghi. #ozchem
valencekjell.com
Maybe on should add capacity to do literature search as one of the criteria…
valencekjell.com
Probably this report for the update of the American recommendations. They claim to have taken abstainer bias into account www.ncbi.nlm.nih.gov/books/NBK614.... The alternative report from the “other side” was just killed by RFK it seems.
Summary
The Dietary Guidelines for Americans (DGA), a joint publication of the U.S. Department of Agriculture (USDA) and the U.S. Department of Health and Human Services (HHS), provide guidance to Americans t...
www.ncbi.nlm.nih.gov
valencekjell.com
Sju sjösjuka sjömän på skeppet Shanghai.
Reposted by Kjell Jorner
alexandrovalab.bsky.social
✨Exciting news - the Alexandrova Group is now on Bluesky!✨

Hello, friends on #chemsky and #compchemsky. We're glad to be here! Stay tuned for the latest #compchem 💻 research and news from the lab!
Reposted by Kjell Jorner
mariokrenn.bsky.social
📢Several PhD and Postdoc positions in my group (focusing on AI for Scientific Discovery in Physics) at @unituebingen.bsky.social

If you are excited about using AI to design new ways for observing the universe, please apply here: uni-tuebingen.de/en/128980#c2...
valencekjell.com
I love these “back-of-the-envelope” calculations!
Reposted by Kjell Jorner
coperetgroup.bsky.social
Congrats to Colin and other awardees of the Talent Program of Catalysis and Sustainabile Chemistry prizes sponsored by
Clariant. @ethz.ch
Reposted by Kjell Jorner
chemjen.bsky.social
This is bonkers - in popular energy-related areas, 10 -15% of the TOTAL papers are reviews or perspectives @pubs.acs.org #ACSEnergyLetters

Editorial: Should You Really be Writing A(nother) Review Manuscript?
pubs.acs.org/doi/10.1021/...
Reposted by Kjell Jorner
jarvist.bsky.social
I'm recruiting PhD students (Imperial Chemistry), for a >Jan 2026 start.

1) Designing antimicrobial peptides with machine learning and computational chemistry approaches
2) Machine learning surrogate quantum mechanical models (particularly Tight-binding and PPP)

docs.google.com/document/d/1...
2025-09_FrostGroupPhDAdverts
September 2025 Frost group PhD adverts Overview / TL;DR Introduction The Frost Research Group Motivation / Philosophy Eligibility Funding Notes How to apply Project 1: Machine learning and computati...
docs.google.com
valencekjell.com
A chance to play John Cage
Reposted by Kjell Jorner
llangresearch.bsky.social
I have an open PhD position. The exact topic is negotiable and can range from implementing new quantum-chemical methods in @orca-qc-official.bsky.social to computational studies of open-shell molecules.
🔗 Details: www.langresearch.org/open-phd-fel...

Please share!

#PhDposition #CompChem
Open PhD Fellowship in Quantum Chemistry at TU Berlin – Lang Research Group
www.langresearch.org
valencekjell.com
Physical organic chemistry, of course 😉
Reposted by Kjell Jorner
spp2363.bsky.social
The second day of the kickoff meeting was a big success with many inspirational talks, and an interactive poster session💻🌟
valencekjell.com
You can already run UMA with ORCA easily. It will download the model automatically. There is also support for spin states. We’re testing this for singlet/triplet organics (broken-symmetry “formalism”) and it is surprisingly good.