Colloidal perovskite nanocrystals offer exceptional color purity and efficiency but have long been limited by poor operational stability.

In Science, researchers report a strategy to stabilize metal halide perovskites by coating them with layers of protective shells. This provides a practical route for using the material in displays under diverse operating environments.

Learn more in this week's issue: https://scim.ag/4pHWBEZ

Synthesis and Excited-State Dynamics in Molecular Nanographene: Herzberg–Teller Vibronic Coupling and Energy Transfer to Porphyrins Nanographenes (NGs) and graphene nanoribbons (GNRs) are molecular-level bridges to bulk-carbon materials. When synthesized with atomic precision via, for example, bottom-up strategies, a direct connection between the structure and properties is demonstrable. This is of key interest, especially considering practical applications. In the current work, we report the synthesis and comprehensive photophysical characterization of a full-benzenoid nanographene (NG-Br) and its covalent conjugate featuring a porphyrin (NG-(Zn)Por). Our synthetic approach relies on a cascade of Suzuki coupling, reduction, and Sandmeyer bromination reactions, starting from halogenated nitrobenzene derivatives. Knowing at which concentration aggregation occurs is important to study either monomers of NG-Br or its aggregates. In organic solvents, the association constant of NG-Br exceeds 1 × 106 M–1. Photophysical and theoretical analyses on the monomer revealed a subtle energy proximity between (S1)/(Lb) and (S2)/(La) that is the basis for strong vibronic coupling via the Herzberg–Teller mechanism, as well as (S1,1) and (S2,0) vibronic mixing. In NG-(Zn)Por, an ultrafast (S1–S1) energy transfer from NG to the porphyrin was observed. Our findings are essential for establishing an unambiguous structure–property relationship for NGs and 9-armchair GNRs, providing a blueprint for their use in optoelectronic devices ranging from single-electron transistors to OLEDs and organic solar cells.

➡️ Increasing the length of molecular nanographenes leads to higher photoluminescence quantum yields!💡

In this @jacs.acspublications.org paper, we show how molecular length tunes the interplay between dark and bright excited states.

🔗 pubs.acs.org/doi/10.1021/...

Many thanks to all coauthors!!

C60: Buckminsterfullerene - Nature Before 1985, it was generally accepted that elemental carbon exists in two forms, or allotropes: diamond and graphite. Then, Kroto et al. identified the signature of a new, stable form of carbon that ...

Just missed it, damn. The 40th anniversary of the discovery of buckminsterfullerene last Friday: www.nature.com/articles/318...

Congratulations, Harry! Another home run! Synthesis of triple stranded porphyrin nanobelts | Science www.science.org/doi/10.1126/... #PiSky

Chasing Waterfalls: A Cascade Mechanism to Generate Triplets from <sup>2</sup>LMCT States Earth-abundant ligand-to-metal charge transfer (LMCT) chromophores in donor–acceptor dyads unlock an electron transfer pathway for efficient triplet state formation.

Use intramolecular electron transfer to make long-lived excited states out of short-lived LMCTs

First Reactions article in ACS Central Science with @fncastellano.bsky.social, based on work by @ludotroian.bsky.social and @cadralab.bsky.social

Our recent publication in collaboration with with Felix, @ludotroian.bsky.social @gioben.bsky.social was highlighted in a First Reactions article in ACS Central Science by @alextbarth.bsky.social and @fncastellano.bsky.social ! Thanks a lot!! @fau.de @solarfau.bsky.social

Beautiful work!!
Using fsTA, we discovered that charge separation mediates Energy Transfer in the long-lived⏳ iron complex-anthracene dyad designed and synthesized by Felix Glaser & @ludotroian.bsky.social - just published in ACS Central Science @pubs.acs.org 🥳

t.co/14xmp6kvHS

It was a great honor to receive the Early Career Researcher Lectureship Prize from the RSC Photophysics and Photochemistry Group!
I had the chance to present my results on nanographenes at the Imperial College during the latest RSC meeting.

Many thanks for the recognition and kind invitation!

Last couple of days until the abstract submission deadline, this Friday the 30th of May, for our @rsc-photochem.bsky.social early career meeting in London this June.

For more details about how to submit an abstract for a talk or poster please see: https//www.rsc.org...

#photochemistry #solarfuels

Had a fantastic week of measurements at @mpip-mainz.mpg.de — thanks a lot to @giulialavarda.bsky.social for hosting me. Honored to be the first guest of her group!

Really enjoyed learning about THz spectroscopy in the group of Prof. Bonn. And many thanks to Prof. Blom for the fruitful discussions!

Excited to be part of this work!
Huge congrats to Phillip for his work on these incredible nanoribbons from @kokelab.bsky.social!

🚨 PhD Position Available! 🚨

Join our group at FAU as part of RTG 2861! 🎓🔬 We are looking for a PhD candidate to study carbon planar lattices via transient spectroscopies.

📌 Details & application: rtg2861-pcl.chm.tu-dresden.de/joboffer/

🔄 Retweets appreciated!

#chemsky #pisky #PhD #Spectroscopy

🥳 Last Tuesday, we celebrated Fasching in style with our traditional Bavarian breakfast—white sausages, pretzels 🥨, and Weizen 🍺. Also this year’s celebration we had a lots of amazing costumes, Alaaf! 🎭🎉

Helically Chiral Mixed‐Valence Systems Comprising N‐Heterotriangulenes: Stabilization of the Cationic Species by π‐Expansion [5]Helicene-bridged dimeric N-heterotriangulenes were synthesized. Their successive oxidation allowed the study of the electronic coupling between the nitrogen centers. The radical cation with its st....

Check out our latest work on a N-triangulene mixed-valence system, in collaboration with Prof. Kivala! 👏 Congrats to Simon, Marcel, and all co-authors!

Read more: doi.org/10.1002/anie.202423516

Photovoltaik: Grundlagenforschung mit hoher Relevanz Momentan verbrennen wir noch große Mengen fossiler Energieträger wie Erdöl oder Kohle, um unseren Energiehunger zu stillen. Dabei entsteht das Treibhausgas Kohlendioxid, das in der Atmosphäre wie eine...

Solarzellen der Zukunft? ☀️🔋

Die FAU-Chemiker Phillip Greißel & Dominik Thiel erforschen, wie Solarzellen noch effizienter werden können. Ihre Erkenntnisse tragen dazu bei, die nachhaltige Energiegewinnung weiter zu verbessern! 🔬⚡

Mehr dazu im Interview: www.nat.fau.de/2025/02/07/p...

💡 Looking for #FacultyPositions in Europe? The search can be a maze!

I shared my personal journey in this @cp-matter.bsky.social article, thanks to an invite from @cranfordmatter.bsky.social.

🔓 Free access here 👉 authors.elsevier.com/c/1kZ4b9Cyxd...

#chemsky #AcademicLife #CareersInScience

ICP2025 The 32nd International Conference on Photochemistry will take place from July 13 (Sunday) to July 18 (Friday), 2025 in Aachen (Germany). The event is jointly organized by the RWTH Aachen University…

Registration for the 32nd International Conference on Photochemistry is now open! Secure your spot at #ICP2025 and join us in Aachen for an exciting week of cutting-edge photochemistry.

Register now at 👉 www.icp2025.de

Two-dimensional polyaniline crystal with metallic out-of-plane conductivity - Nature A multilayer-stacked two-dimensional polyaniline crystal shows high electrical conductivity and unique out-of-plane metallic transport behaviour, indicating potential for strong electronic coupling beyond in-plane interactions and three-dimensional metallic conductivity.

Nature research paper: Two-dimensional polyaniline crystal with metallic out-of-plane conductivity

https://go.nature.com/40LsmCt

Please share. Only 3 days left to apply 🚨 for a PhD position on metal-free magnetism at TU Dresden.

For more information, see www.verw.tu-dresden.de/StellAus/ste...

#PhDjobs #Phdsky #chemjobs #chemsky #academicjobs #researchjobs #chemphd #PhDchat #scitwitter ⚛️🧪 #compchem

New #openaccess article online: Near-petahertz fieldoscopy of liquid.

go.nature.com/3PRVi6Q

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...

Great initiative, I would like to added!

Bilayer nanographene reveals halide permeation through a benzene hole - Nature Halide permeation through a single benzene-sized defect in a molecular nanographene shows the permeability of fluoride, chloride and bromide, whereas iodide is impermeable.

Wow!
#pisky #chemsky
www.nature.com/articles/s41...

Peng-Lai, @stefanborsley.bsky.social, Martin & our collaborators Alessandro and @giusepponelab.bsky.social demonstrate how a catalyst transduces chemical energy to perform mechanical work in www.nature.com/articles/s41... in @nature.com. tinyurl.com/jny7nen5. Animation @scicommstudios.bsky.social😀

Abstract submissions for oral and poster presentations at the 32nd International Conference on Photochemistry #ICP2025 are now open! 🧪

Submit via our website icp2025.de by April 30, 2025.

#ICP2025 will be held from July 13 -18 , 2025, in Aachen, Germany. Find the program & details online.

Sir Fraser Stoddart, a pioneer in nanoscience, dies at 82 Stoddart received the 2016 Nobel Prize in Chemistry for work on molecular machines

A more extensive news story from Northwestern about Fraser 👇 #Chemsky

Excited to join the #chemsky community!

Alright since a critical mass of photochemists officially joined it was about time to try and make a photochemistry/spectroscopy starter pack; hopefully this is a good start, feel free to reach out to be added! #chemsky

go.bsky.app/Cyibs8f