Henrik Ottosson
@henrikottosson.bsky.social
Physical organic chemist at Uppsala University, Sweden, with additional interests in urban science and sustainability. Special research focus on excited state aromaticity & antiaromaticity effects, both the fundamental and applied aspects.
Reposted by Henrik Ottosson
The Polish prime minister reacts
November 23, 2025 at 10:48 AM
The Polish prime minister reacts
Reposted by Henrik Ottosson
Most dismaying is the lack of imagination. How sad to equate freedom for sitting alone in a private, movable metal cell—a.k.a. car—and then spend most time in a long row of these cells—a.k.a. traffic jam? And how many people r even truly noticing the few genuine freedoms that car can actually offer?
Never forget, car dependency is the opposite of freedom.
What’s more “free” than cars, you ask?
Choices.
What’s more “free” than cars, you ask?
Choices.
November 15, 2025 at 12:31 AM
Most dismaying is the lack of imagination. How sad to equate freedom for sitting alone in a private, movable metal cell—a.k.a. car—and then spend most time in a long row of these cells—a.k.a. traffic jam? And how many people r even truly noticing the few genuine freedoms that car can actually offer?
Reposted by Henrik Ottosson
I biked two blocks over to my local train depot and picked this gem up from the independent bookshop therein. It was a good place to imagine a #LifeAfterCars.
@thewaroncars.bsky.social
@thewaroncars.bsky.social
October 22, 2025 at 3:29 AM
I biked two blocks over to my local train depot and picked this gem up from the independent bookshop therein. It was a good place to imagine a #LifeAfterCars.
@thewaroncars.bsky.social
@thewaroncars.bsky.social
Reposted by Henrik Ottosson
Researchers have discovered molecules where individual rings can flip between aromatic and antiaromatic states so rapidly that they could exist in quantum superposition – creating a molecular equivalent of Schrödinger's cat.
Quantum tunnelling drives aromaticity flip-flop
Augmented pentalene structure could be a molecular Schrödinger's cat, aromatic and antiaromatic at the same time
www.chemistryworld.com
October 22, 2025 at 11:14 AM
Researchers have discovered molecules where individual rings can flip between aromatic and antiaromatic states so rapidly that they could exist in quantum superposition – creating a molecular equivalent of Schrödinger's cat.
Reposted by Henrik Ottosson
This Chemistry World is covering the work of @kozuchsebastian.bsky.social, published in Chemical Science.
You can read the full paper here:
doi.org/10.1039/D5SC...
#ChemSky
You can read the full paper here:
doi.org/10.1039/D5SC...
#ChemSky
October 22, 2025 at 12:54 PM
This Chemistry World is covering the work of @kozuchsebastian.bsky.social, published in Chemical Science.
You can read the full paper here:
doi.org/10.1039/D5SC...
#ChemSky
You can read the full paper here:
doi.org/10.1039/D5SC...
#ChemSky
Note: Several have had problems to pay the registration fee for participation at ICESAA-4. If you are among these, please note that it is possible to pay by card on-site. Further information is available at icesaa-4.in/registration New registration deadline is Oct 20.
Join us for ICESAA-4, the 4th International Conference on Excited State Aromaticity & Antiaromaticity!
January 8–11, 2026, IISER Thiruvananthapuram, India.
#icesaa4
Website: www.icesaa-4.in
@henrikottosson.bsky.social
@maheshhariharan.bsky.social
January 8–11, 2026, IISER Thiruvananthapuram, India.
#icesaa4
Website: www.icesaa-4.in
@henrikottosson.bsky.social
@maheshhariharan.bsky.social
October 15, 2025 at 2:05 PM
Note: Several have had problems to pay the registration fee for participation at ICESAA-4. If you are among these, please note that it is possible to pay by card on-site. Further information is available at icesaa-4.in/registration New registration deadline is Oct 20.
Reposted by Henrik Ottosson
In 1933, the Athens Charter set the stage for modern urbanism through zoning — a vision led by Le Corbusier.
That vision shaped cities around the world, but today we must rethink its legacy.
The city of the future must be connected and human-centered.
That vision shaped cities around the world, but today we must rethink its legacy.
The city of the future must be connected and human-centered.
September 19, 2025 at 8:53 AM
In 1933, the Athens Charter set the stage for modern urbanism through zoning — a vision led by Le Corbusier.
That vision shaped cities around the world, but today we must rethink its legacy.
The city of the future must be connected and human-centered.
That vision shaped cities around the world, but today we must rethink its legacy.
The city of the future must be connected and human-centered.
Reposted by Henrik Ottosson
Canon.
August 30, 2025 at 6:56 AM
Canon.
Reposted by Henrik Ottosson
Sharing new work. Now on @ChemicalScience on how geminal hyperconjugation affects heavy-atom tunneling! pubs.rsc.org/en/content/a...
Geminal Hyperconjugation as a Driving Force for C–C Bond Shortening in Heavy-Atom Tunneling
Geminal hyperconjugation can play an important role in heavy-atom tunnelling reactions that involve three-membered rings. We demonstrate this relationship in a case study of the equilibrium between ox...
pubs.rsc.org
August 26, 2025 at 5:13 PM
Sharing new work. Now on @ChemicalScience on how geminal hyperconjugation affects heavy-atom tunneling! pubs.rsc.org/en/content/a...
Reposted by Henrik Ottosson
Car-dependent suburban sprawl is the most publicly expensive, publicly subsidized, and publicly consequential form of human habitation in human history. #SuburbanSprawl #CarDependency
August 27, 2025 at 12:03 AM
Car-dependent suburban sprawl is the most publicly expensive, publicly subsidized, and publicly consequential form of human habitation in human history. #SuburbanSprawl #CarDependency
Reposted by Henrik Ottosson
⏳ Don’t miss out! ICESAA-4 registration closes soon – secure your spot today and be part of cutting-edge science in action. 🔬✨Last date: Aug 30, 2025. Late registration closes: Sep 30, 2025. #ICESAA4 #ScienceConference #Research"
Join us for ICESAA-4, the 4th International Conference on Excited State Aromaticity & Antiaromaticity!
January 8–11, 2026, IISER Thiruvananthapuram, India.
#icesaa4
Website: www.icesaa-4.in
@henrikottosson.bsky.social
@maheshhariharan.bsky.social
January 8–11, 2026, IISER Thiruvananthapuram, India.
#icesaa4
Website: www.icesaa-4.in
@henrikottosson.bsky.social
@maheshhariharan.bsky.social
August 15, 2025 at 5:05 AM
⏳ Don’t miss out! ICESAA-4 registration closes soon – secure your spot today and be part of cutting-edge science in action. 🔬✨Last date: Aug 30, 2025. Late registration closes: Sep 30, 2025. #ICESAA4 #ScienceConference #Research"
REMINDER of deadlines for ICESAA-4 in Kerala, India:
Early-bird registration deadline: Aug 30
Abstract submission deadline: Sept 15
Regular registration deadline: Sept 30
This is the conference to attend if you want to learn about excited state aromaticity & antiaromaticity, at a wonderful place!
Early-bird registration deadline: Aug 30
Abstract submission deadline: Sept 15
Regular registration deadline: Sept 30
This is the conference to attend if you want to learn about excited state aromaticity & antiaromaticity, at a wonderful place!
Join us for ICESAA-4, the 4th International Conference on Excited State Aromaticity & Antiaromaticity!
January 8–11, 2026, IISER Thiruvananthapuram, India.
#icesaa4
Website: www.icesaa-4.in
@henrikottosson.bsky.social
@maheshhariharan.bsky.social
January 8–11, 2026, IISER Thiruvananthapuram, India.
#icesaa4
Website: www.icesaa-4.in
@henrikottosson.bsky.social
@maheshhariharan.bsky.social
August 16, 2025 at 1:22 PM
REMINDER of deadlines for ICESAA-4 in Kerala, India:
Early-bird registration deadline: Aug 30
Abstract submission deadline: Sept 15
Regular registration deadline: Sept 30
This is the conference to attend if you want to learn about excited state aromaticity & antiaromaticity, at a wonderful place!
Early-bird registration deadline: Aug 30
Abstract submission deadline: Sept 15
Regular registration deadline: Sept 30
This is the conference to attend if you want to learn about excited state aromaticity & antiaromaticity, at a wonderful place!
Reposted by Henrik Ottosson
“The guy Trump nominated to lead the Bureau of Labor Statistics at January 6, amazing scoop by Ryan Reilly”
(HT Aaron Fritschner)
www.nbcnews.com/politics/jus...
(HT Aaron Fritschner)
www.nbcnews.com/politics/jus...
August 14, 2025 at 1:10 PM
“The guy Trump nominated to lead the Bureau of Labor Statistics at January 6, amazing scoop by Ryan Reilly”
(HT Aaron Fritschner)
www.nbcnews.com/politics/jus...
(HT Aaron Fritschner)
www.nbcnews.com/politics/jus...
Reposted by Henrik Ottosson
The same forces that have destroyed Sudan are coming for other countries, @anneapplebaum.bsky.social reports. Greed, nihilism, and transactionalism are reshaping the politics of the rich world—and as the liberal world order falls away, there’s nothing to replace it: https://theatln.tc/QFUVKQg3
August 9, 2025 at 7:15 PM
The same forces that have destroyed Sudan are coming for other countries, @anneapplebaum.bsky.social reports. Greed, nihilism, and transactionalism are reshaping the politics of the rich world—and as the liberal world order falls away, there’s nothing to replace it: https://theatln.tc/QFUVKQg3
Now in the special issue on Physical Organic Chemistry of
J. Org. Chem.. We explore which factors determine whether a certain heteroaromatic compound has its first excited states (T1 & S1) of npi* or pipi* character, and identify six factors. More to follow!
pubs.acs.org/doi/10.1021/...
J. Org. Chem.. We explore which factors determine whether a certain heteroaromatic compound has its first excited states (T1 & S1) of npi* or pipi* character, and identify six factors. More to follow!
pubs.acs.org/doi/10.1021/...
Toward a Systematics for the Lowest Excited States of Heteroaromatics Enabled via Cyclic π-Conjugated Carbenes and Heteroelement Analogues
The photochemistry of heteroaromatic compounds depends on the character of their lowest electronically excited states, which are of either n,π* or π,π* type. For species with 4n + 2 π-electrons, the l...
pubs.acs.org
July 8, 2025 at 2:02 PM
Now in the special issue on Physical Organic Chemistry of
J. Org. Chem.. We explore which factors determine whether a certain heteroaromatic compound has its first excited states (T1 & S1) of npi* or pipi* character, and identify six factors. More to follow!
pubs.acs.org/doi/10.1021/...
J. Org. Chem.. We explore which factors determine whether a certain heteroaromatic compound has its first excited states (T1 & S1) of npi* or pipi* character, and identify six factors. More to follow!
pubs.acs.org/doi/10.1021/...
Reposted by Henrik Ottosson
Chemistry artwork by Toma Bohmick
June 30, 2025 at 3:45 PM
Chemistry artwork by Toma Bohmick
Reposted by Henrik Ottosson
Super inspiring talk by Stefan Hecht. ”There is no applied science without science to apply”
June 10, 2025 at 11:54 AM
Super inspiring talk by Stefan Hecht. ”There is no applied science without science to apply”
Reposted by Henrik Ottosson
Congratulations to our PostDoc Marvin on his newest publication from his time in the Kubo Lab! 🤩👨🔬
Read all about it below👇 #chemsky #pisky #postdoc
pubs.acs.org/doi/full/10....
Read all about it below👇 #chemsky #pisky #postdoc
pubs.acs.org/doi/full/10....
Stable Tribrominated Phenalenyl Radical Exhibiting Long-Lived Luminescence from a Monomer−π-Dimer Equilibrium
Open-shell organic radicals exhibit exceptional photophysical properties due to their unique electronic structures. Herein, we report the 2,5,8-tribromophenalenyl radical (Br-PLY) as a stable, emissive phenalenyl derivative. Br-PLY shows a monomer−π-dimer equilibrium in solution and emits light from its monomeric radical state. Its high air stability (t1/2 ≈ 40 h) and long-lived emission (τ = 252 ns) demonstrate the potential of phenalenyl radicals as promising luminescent materials beyond trityl-based systems.
pubs.acs.org
June 11, 2025 at 8:03 AM
Congratulations to our PostDoc Marvin on his newest publication from his time in the Kubo Lab! 🤩👨🔬
Read all about it below👇 #chemsky #pisky #postdoc
pubs.acs.org/doi/full/10....
Read all about it below👇 #chemsky #pisky #postdoc
pubs.acs.org/doi/full/10....
Reposted by Henrik Ottosson
Molecular belts can go SUPERCOILED! An amazing 24-benzene and 24-thiophene fused molecular belt with a plectonemic geometry.
x.com/kelong_zhu/s... #PiSky
x.com/kelong_zhu/s... #PiSky
June 8, 2025 at 4:19 PM
Molecular belts can go SUPERCOILED! An amazing 24-benzene and 24-thiophene fused molecular belt with a plectonemic geometry.
x.com/kelong_zhu/s... #PiSky
x.com/kelong_zhu/s... #PiSky
Reposted by Henrik Ottosson
Neo-nazi group with clear Russian links expands activity in the US
www.theguardian.com/us-news/2025...
www.theguardian.com/us-news/2025...
Neo-Nazi group ‘actively seeking to grow in US’ with planned paramilitary training event
The Base is emerging from shadows and ramping up its ranks as White House turns blind eye to the far right
www.theguardian.com
June 7, 2025 at 8:30 PM
Neo-nazi group with clear Russian links expands activity in the US
www.theguardian.com/us-news/2025...
www.theguardian.com/us-news/2025...
Reposted by Henrik Ottosson
Please read this. It’s really important.
Just released. My Nature piece:
"Never before has the USA seen such an anti-intellectual, anti-science assault...
History tells us that there are times when the dangers of inaction become sufficiently threatening to individuals or the planet that scientists...
rdcu.be/eo3Hb
"Never before has the USA seen such an anti-intellectual, anti-science assault...
History tells us that there are times when the dangers of inaction become sufficiently threatening to individuals or the planet that scientists...
rdcu.be/eo3Hb
More US scientists must speak out
Nature Human Behaviour - The Trump administration has launched an extraordinary and dangerous attack on US science. Climate and water scientist Peter Gleick calls on scientists who are able and...
rdcu.be
June 2, 2025 at 11:58 AM
Please read this. It’s really important.
Just submitted my first proposal to SIDA. Would be really inspiring if it gets funded!
May 31, 2025 at 5:30 PM
Just submitted my first proposal to SIDA. Would be really inspiring if it gets funded!
Reposted by Henrik Ottosson
The Stockholm Declaration on Chemistry for the Future was launched today: www.stockholm-declaration.org I believe this will be an important guiding document in years to come. Please read, sign, and share!
Home | Stockholm Declaration
www.stockholm-declaration.org
May 23, 2025 at 12:32 PM
The Stockholm Declaration on Chemistry for the Future was launched today: www.stockholm-declaration.org I believe this will be an important guiding document in years to come. Please read, sign, and share!
Reposted by Henrik Ottosson
Congratulations to @miquelsola.bsky.social who has been awarded the prestigious @rseq-quimica.bsky.social Medal!
Last year, @henrikottosson.bsky.social, @jordipoater.bsky.social & Anton Stasyuk organized a Special Collection in honor of Prof. Solà with ChemEurJ - Read on: bit.ly/ChemEurJ_MSola 🧪
Last year, @henrikottosson.bsky.social, @jordipoater.bsky.social & Anton Stasyuk organized a Special Collection in honor of Prof. Solà with ChemEurJ - Read on: bit.ly/ChemEurJ_MSola 🧪
May 15, 2025 at 6:52 PM
Congratulations to @miquelsola.bsky.social who has been awarded the prestigious @rseq-quimica.bsky.social Medal!
Last year, @henrikottosson.bsky.social, @jordipoater.bsky.social & Anton Stasyuk organized a Special Collection in honor of Prof. Solà with ChemEurJ - Read on: bit.ly/ChemEurJ_MSola 🧪
Last year, @henrikottosson.bsky.social, @jordipoater.bsky.social & Anton Stasyuk organized a Special Collection in honor of Prof. Solà with ChemEurJ - Read on: bit.ly/ChemEurJ_MSola 🧪
Reposted by Henrik Ottosson
🔥 New and HOT in Chemical Science!
"Tuning Intramolecular Charge Transfer and Suppressing Rotations in Thianthrene Derivatives for Enhancement of Room-Temperature Phosphorescence" by Jiadong Zhou and Cong Liu et al.
Read it for free here: pubs.rsc.org/doi/D5S...
#ChemSky
"Tuning Intramolecular Charge Transfer and Suppressing Rotations in Thianthrene Derivatives for Enhancement of Room-Temperature Phosphorescence" by Jiadong Zhou and Cong Liu et al.
Read it for free here: pubs.rsc.org/doi/D5S...
#ChemSky
May 14, 2025 at 2:01 PM
🔥 New and HOT in Chemical Science!
"Tuning Intramolecular Charge Transfer and Suppressing Rotations in Thianthrene Derivatives for Enhancement of Room-Temperature Phosphorescence" by Jiadong Zhou and Cong Liu et al.
Read it for free here: pubs.rsc.org/doi/D5S...
#ChemSky
"Tuning Intramolecular Charge Transfer and Suppressing Rotations in Thianthrene Derivatives for Enhancement of Room-Temperature Phosphorescence" by Jiadong Zhou and Cong Liu et al.
Read it for free here: pubs.rsc.org/doi/D5S...
#ChemSky