Yoann Fréroux
yoann-freroux.bsky.social
Yoann Fréroux
@yoann-freroux.bsky.social
3rd year PhD Student in Chemistry, ISCR, Rennes.
Working with Pr. Lucie Norel and Pr. Stéphane Rigaut on the synthesis of new antennae for photoswitchable luminescent Lanthanides(III) complexes
Pinned
👨‍🎓On Friday, November 7, 2025, I had the honor of defending my thesis entitled “Luminescent lanthanide(III) complexes with dynamic optical responses,” completed at the @rennesuniv.bsky.social, within the @iscr-rennes.bsky.social !

The end of an exciting chapter, combining challenges and successes 🎉
Reposted by Yoann Fréroux
👩‍🎓 Elodie Dureau présentera ses travaux de thèse
📅Vendredi 28 novembre 2025 🕰️14:00, Amphi Grandjean, #ISCR

➡️ openagenda.com/institut-des...

🤝 @rennesuniv.bsky.social @cnrs-bretagneloire.bsky.social #ENSCR @insarennes.bsky.social

#CollegeDoctoralBretagne #Doctorat #Chimie #PhD #CNRS_Chimie
November 25, 2025 at 7:51 AM
👨‍🎓On Friday, November 7, 2025, I had the honor of defending my thesis entitled “Luminescent lanthanide(III) complexes with dynamic optical responses,” completed at the @rennesuniv.bsky.social, within the @iscr-rennes.bsky.social !

The end of an exciting chapter, combining challenges and successes 🎉
November 13, 2025 at 7:58 AM
🧩 New in @daltontrans.rsc.org!
We report photochromic macrocyclic Y(III) and Dy(III) complexes that switch between merocyanine and spiropyran form. Structural and theoretical studies reveal how these complexes could lead to photoswitchable single-molecule magnets!
🔗 doi.org/10.1039/D5DT...
November 12, 2025 at 11:51 AM
Reposted by Yoann Fréroux
👨‍🎓 @yoann-freroux.bsky.social présentera ses travaux de thèse
📅vendredi 7 novembre 2025 🕰️9:30, Amphi Grandjean, #ISCR
➡️ openagenda.com/institut-des...

🤝 @rennesuniv.bsky.social @cnrs-bretagneloire.bsky.social #ENSCR @insarennes.bsky.social

#CollegeDoctoralBretagne #Doctorat #Chimie #PhD
November 5, 2025 at 7:32 AM
🎉 New in @chemicalscience.rsc.org!
We show how lanthanide ions luminescence from visible to NIR can be controlled using photochromic DTE–β-diketonate ligands.
Most of all, we reveal the crucial role of DTE's triplet states in both luminescence sensitization and quenching!
🔗 doi.org/10.1039/D5SC...
From erbium(III) to samarium(III): generalized photomodulation of NIR to red lanthanide luminescence with a DTE ligand and its versatile role in the quenching processes
In this article, we report that a stable molecular system combining three DTE-β-diketonate units, a phenanthroline ligand and a lanthanide ion provides, for an unprecedented panel of lanthanide(iii) i...
doi.org
October 28, 2025 at 3:07 PM
This summer I had the great pleasure to take part in the 26th ISPPCC & y-ISPPCC2025 in Messina 🇮🇹! I had inspiring exchanges with brilliant researchers and was honored to receive a Poster Prize sponsored by @rsc.org🏆! Grateful to the organizers and @eur-lumomat.bsky.social for the mobility grant🙏
October 14, 2025 at 1:20 PM
Reposted by Yoann Fréroux
Post-doctoral position at CEISAM lab in Nantes !

Join to synthesize near-infrared dyes and design next-gen solar cells, within the Connect Talent TRANSCEND project funded by Région Pays de la Loire, Nantes Métropole & @cnrs.fr.

Deadline: Sept. 23rd
Apply here: emploi.cnrs.fr/Offres/CDD/U...
September 2, 2025 at 8:38 AM
Reposted by Yoann Fréroux
Proud to see one of my colorful photocatalytic picture displayed :D
cen.acs.org/synthesis/Ch...
Chemistry in Pictures: Photocatalysis
Chemical & Engineering News (C&EN): Keeping you up to date with the chemistry news that matters most. Published by the American Chemical Society.
cen.acs.org
August 10, 2025 at 2:52 PM
Reposted by Yoann Fréroux
L'équipe PulSAr est à la recherche d'un·e jeune collègue! Si vous désirez passer le concours CNRS et que vous êtes intéressés par la chimie supramoléculaire et les systèmes conjugués redox-actifs, contactez nous! Détails dans l'image jointe @cnrs.fr
July 22, 2025 at 2:35 PM
Reposted by Yoann Fréroux
Excited to share in @nature.com today: Broadband transient full-Stokes luminescence spectroscopy - detecting the most subtle changes in light polarization over time with unprecedented sensitivity. Grateful for the team that made this possible!😊 www.nature.com/articles/s41... #chirality #light
Broadband transient full-Stokes luminescence spectroscopy - Nature
A high-sensitivity, broadband, transient, full-Stokes spectroscopy setup is demonstrated, which can detect quickly varying small signals from chiral emitters.
www.nature.com
June 26, 2025 at 6:23 AM
Reposted by Yoann Fréroux
The most energetic molecule ever, and only the second ever neutral nitrogen molecule, hexanitrogen, has been isolated and characterised by researchers in Germany. #ChemSky
Most energetic molecule ever made is stable – in liquid nitrogen
Nitrogen allotrope releases double the energy of the most powerful chemical explosives
www.chemistryworld.com
June 13, 2025 at 10:04 AM
🚨 New paper out in Chem Commun!

We report a light-responsive Eu(III) complex with red luminescence switched ON/OFF via a single UV source, no need for dual-wavelength control. Fast, reversible, and efficient!

Thanks to everyone involved in this work 🙌
📄 Full article here: doi.org/10.1039/d5cc...
May 6, 2025 at 11:49 AM
I am beyond excited to have participated to the PERMolMat Japan-France workshop at ENS Paris-Saclay and presented my work with a poster and a flash presentation!
This journey has been an incredible opportunity to see the latest work of wonderful researchers and connect with them! 🤝
April 3, 2025 at 6:33 AM
Reposted by Yoann Fréroux
At least Springer Nature is doing well while higher education is collapsing all over the place.

www.researchprofessionalnews.com/rr-news-worl...
March 19, 2025 at 6:45 AM
Reposted by Yoann Fréroux
La honte.
March 11, 2025 at 7:13 PM
Reposted by Yoann Fréroux
Nous sommes à la recherche de candidats pour un poste d'enseignant·e-chercheur·e contractuel·le en chimie pour la rentrée 2025. L'intégration en recherche se fera au sein de mon équipe.
N'hésitez pas à me contacter si vous avez des questions ! Pour postuler, c'est ici :(1/2)
Recrutement d' un ou une enseignants.e-chercheur.e contractuel.le en Chimie - Université Angers
www.univ-angers.fr
March 3, 2025 at 10:05 AM
Reposted by Yoann Fréroux
📢Depuis son investiture le 20 janvier, Donald Trump a pris des décisions qui vont sérieusement nuire à la recherche scientifique aux États-Unis, avec des répercussions mondiales, notamment sur les collaborations internationales.

#Science #Recherche #USA #CollaborationsInternationales #Innovation
February 18, 2025 at 4:39 PM
Reposted by Yoann Fréroux
Hello everyone, we are hiring a Postdoctoral Researcher to start as soon as possible we have a PhD fellowship to start in October 2025. Both are funded by the ERC. All the information is here, do not hesitate to share and to contact me! #chemsky #PiSky
February 10, 2025 at 1:14 PM
Reposted by Yoann Fréroux
Making Mo(0) a Competitive Alternative to Ir(III) in Phosphors and Photocatalysts

Just published in the Journal of the Americal Chemical Society

pubs.acs.org/doi/10.1021/...
January 23, 2025 at 6:21 PM
After more than fifty movies watched in the theaters this year and many more to catch up on (Emilia Perez, Anora, The Seed of the Sacred Fig, The Apprentice...), here is my top 10 of my favourite movies of 2024 😁
Can't wait to see what 2025 will hold for us 🎬
January 8, 2025 at 10:01 AM
Last #FluorescenceFriday of the year today with special Christmas luminophore 🎁 🎄❄️
Nice gift to finish this wonderful year in the lab 🤩
December 20, 2024 at 12:49 PM
Reposted by Yoann Fréroux
Reposted by Yoann Fréroux
🚨 Preprint! We combine our recent open dataset of #APC prices with the article counts per journal-year from #OpenAlex to estimate how much the academic community has paid in APCs over the last 5 years.

A. $8.349 billion ($8.968 B in 2023 USD)

$2.5B in 2023 alone.

arxiv.org/abs/2407.16551 #metasci
Estimating global article processing charges paid to six publishers for open access between 2019 and 2023
This study presents estimates of the global expenditure on article processing charges (APCs) paid to six publishers for open access between 2019 and 2023. APCs are fees charged for publishing in some ...
arxiv.org
November 18, 2024 at 4:16 PM
Really proud to share with you my first participation on a paper with this review !
If you want to know more about photoswitchable lanthanide complexes with their luminescent and magnetic properties, you will know everything you need after reading this : www.sciencedirect.com/science/arti...
Control of 4f complexes luminescence and magnetism with organic photochromic units
In this chapter, we present combinations of lanthanide ions with organic photochromic units within molecular systems that exhibit either luminescence …
www.sciencedirect.com
November 20, 2024 at 7:18 AM
When your column shines brighter than Brittany's cloud sky ✨
November 20, 2024 at 7:16 AM