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Posts by Stefano Crespi

Thank you!!

2 months ago 2 0 0 0
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The Nonadiabatic Nature of the Substituent Effects in Azobenzene Unified nonadiabatic switching: thermal Z→E isomerization of para-substituted azobenzenes proceeds through a single nonadiabatic rotational pathway. The iconic bell-shaped Hammett plot is a σp artifa...

Check out our latest publication in @angewandtechemie.bsky.social where we show that the infamous V shape in the substituent effects in the thermal isomerization of azobenzenes comes from a single nonadiabatic mechanism 🔥 and not a mix of two.

onlinelibrary.wiley.com/doi/10.1002/...

2 months ago 28 5 1 1

Pleasure was mine, mate! Awesome molecules!

2 months ago 2 0 0 0
Cartoon representation of an indigo photoswitch in a rotaxane

Cartoon representation of an indigo photoswitch in a rotaxane

Dead excited to share our preprint showcasing some of the effects of incorporating indigo photoswitches into rotaxanes

Fantastic work by Alex, and great to be working with @screspi.bsky.social and co!
chemrxiv.org/doi/full/10....

2 months ago 6 2 3 0
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Två yngre kemister tilldelas första Nagelska priset - Kungl. Vetenskapsakademien Kungl. Vetenskapsakademien tilldelar Eleni Stavrinidou, Linköpings universitet, och Stefano Crespi, Uppsala universitet, det allra första Nagelska priset i kemi. Det handlar om en miljon kronor varder...

Proud of being recipient of the first Nagel Prize in Chemistry ⚗️ from @scienceacademyswe.bsky.social www.kva.se/nyheter/tva-...

5 months ago 7 1 1 1
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Autonomous Activation of a Gated Chemiluminescent Photosensitizer Enables Targeted Photodynamic Therapy in Tumor Cells Chemiluminescence-based photodynamic therapy (CLPDT) offers a promising solution to the light penetration limits of traditional PDT. However, it lacks spatiotemporal control. Intracellularly activated...

We developed an AND-gated chemiluminescent photosensitizer that only generates light inside tumor cells, activating under 2 cancer cell-specific conditions.
Many thanks to Wenwu Peng @pengww.bsky.social from Seah Ling Kuan's group @seahling.bsky.social & our collaborators! shorturl.at/uXTg3

8 months ago 11 2 0 2
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Semi‐Automated Pipeline for Transition State Search of Molecular Photoswitches A semi-automated pipeline for the transition state search of molecular switches (PiTS3) is reported, which facilitates the search, optimization, and conformational analysis of transition states of ph...

Our pipeline to compute thermal barriers of photoswitches💡 is out!🥳 We especially focused on NBDs for MOST🔋 and imines, but also stilbenes and DAEs. Try it out! You need just chemdraws and freeware to get libraries computed

doi.org/10.1002/cptc...

9 months ago 18 5 0 0

Almost there! :D

9 months ago 5 1 0 0
Modulation of Lanthanide Luminescence with the Mechanical Bond: Antenna‐Emitter Confinement in a Compact [2]Rotaxane Luminescent emitters based on lanthanide ions are of ubiquitous importance in the biological sciences, but typically need sensitisation from a covalently attached adjacent chromophore – an “antenna” ....

Over the moon that the first paper from Anja's studies on metal chelate rotaxanes is now online in @angewandtechemie.bsky.social. doi.org/10.1002/anie...
Massive congratulations Anja,
@daisypooler.bsky.social Huseyn, Monika and @screspi.bsky.social 🥳🎉🎊🍀🥃

Thread below --》

10 months ago 36 8 5 0
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The Effect of Aldehyde and Carboxylic Acid Substitution on the Isomerization of Hemithioindigo Photoswitches Hemithioindigo (HTI) photoswitches exhibit robust photoisomerization under visible light and relatively high thermal bistability. In this work, we report various modifications of the HTI core, namely....

Mati's work on aldehyde and COOH effect on HTIs is out! Nice collaboration with the Ott group for the inclusion and switching of HTIs in MOFs💡 doi.org/10.1002/chem...

1 year ago 5 3 0 0
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Cross-Coupling Reactions with Nickel, Visible Light, and tert-Butylamine as a Bifunctional Additive Transition metal catalysis is crucial for the synthesis of complex molecules, with ligands and bases playing a pivotal role in optimizing cross-coupling reactions. Despite advancements in ligand desig...

Tert-butylamine as a labile ligand and base enables cross-coupling reactions with various nucleophile classes. A great collaboration of Jonas with the Sigman lab and Gschwind group
#ChemSky #ChemCollabs #photocatalysis

doi.org/10.1021/acsc...

1 year ago 21 4 0 0

Reposting this #molswitch #molmachine starter pack. If you want to be included in it, please let me know
go.bsky.app/EwimNbK

1 year ago 64 30 16 1

Here is a tentative Supramolecular Chemistry starter kit. Please let me know if you wish to be added ! #ChemSky
go.bsky.app/RjRgi6n

1 year ago 109 51 38 2

Great to be highlighted by @chemistryviews.bsky.social! Go pnictogen switches 😀 💡

1 year ago 13 0 0 0
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Molecular Switch with a Variety of External Triggers:
Reversible molecular switching of a phosphaethene polyaromatic hydrocarbon by irradiation, metal coordination, or deprotonation
www.chemistryviews.org/molecular-sw...

1 year ago 10 2 1 1

Another C=P switch💡🅿️, this time with a metal twist 😀 great collaboration with @orthaberlab.bsky.social

1 year ago 13 3 0 0

Best way to explain transient spectroscopy

1 year ago 1 0 0 0
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1 year ago 14 5 0 0

Now that @feringalab.bsky.social is here too, the race is open 😀

1 year ago 2 0 1 0

Our OrgChem Starter Pack is growing with already 122 entries, but we will start a volume 2 if we go over the 150 limit!
go.bsky.app/NSEFPFJ

1 year ago 61 29 23 0
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Probing the Hidden Photoisomerization of a Symmetric Phosphaalkene Switch In this study, we present the synthesis and analysis of a novel, air-stable, and solvent-resistant phosphaalkene switch. Using this symmetric switch, we have demonstrated degenerate photoisomerizatio...

Absolutely delighted to see the light of this collaborative work between the @screspi.bsky.social team and our group, with all the spectroscopy help.
Demonstrating degenerate isomerisation of phosphaalkenes using NMR spectroscopy #chemsky #NMRchat
onlinelibrary.wiley.com/doi/10.1002/...

1 year ago 13 5 1 0

Thank you Oliver 😊

1 year ago 0 0 0 0
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Probing the Hidden Photoisomerization of a Symmetric Phosphaalkene Switch In this study, we present the synthesis and analysis of a novel, air-stable, and solvent-resistant phosphaalkene switch. Using this symmetric switch, we have demonstrated degenerate photoisomerizatio...

Hey #Chemsky! For my first post, I am hyped to share our latest efforts on main group C=P photoswitches💡, where we explored their isomerization mechanisms and observed experimentally symmetric molecules switch via NMR!🧲🔍a great international collaboration! onlinelibrary.wiley.com/doi/10.1002/...

1 year ago 36 8 3 0

You ever have one of those amazing weeks when everything clicks in your multiple roles as an academic PI- scientist, mentor, parent, partner, colleague, psychologist, fundraiser, salesperson?

(Yeah, me neither.)

But screwing up each of these roles takes special talent.

(I am that talented.)

1 year ago 262 13 8 1
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Postdoc position in reactive machine learning potentials

What better first post than to advertise this position. Come join our group!

Our group is recruiting a postdoctoral researcher for a project on reactive machine learning potentials. Reposts and spreading the word to interested people in your network appreciated!

jobs.ethz.ch/job/view/JOP...

1 year ago 61 34 0 5

Oh dear lord...

1 year ago 0 0 0 0
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Here is a starter pack for folks into tiny switches and machines. I am sure I missed many. Please let me know if you should be included and I will add you
go.bsky.app/EwimNbK

1 year ago 78 30 14 1

I feel you...and the more things you have to do on top of it, the more it seems like a stressful chore where you stare at a blank page
But let's be positive! congrats on the editorial 😉

1 year ago 3 0 1 0
The Elbphilharmonie building in Hamburg surrounded by the Elbe river with blue skies and a few clouds.

The Elbphilharmonie building in Hamburg surrounded by the Elbe river with blue skies and a few clouds.

Canal with houses and people on stand up paddling boards queuing at a waterside café

Canal with houses and people on stand up paddling boards queuing at a waterside café

Summer day at the Alster lake in Hamburg with people on stand up paddling boards and a sailing boat

Summer day at the Alster lake in Hamburg with people on stand up paddling boards and a sailing boat

Would you like to spend the next summer in beautiful Hamburg doing some uranium chemistry? If you're an undergraduate student from the UK, Ireland or North America, you have 11 days left to apply for two fully funded research internships via the DAAD: www.daad.de/rise/en/rise... #chemsky

1 year ago 25 15 1 2