Katja Heinze's research group University of Mainz

The first online symposium organized by the @gdch.de Division of Photochemistry will take place next week (Nov. 5, 2025, 3 pm CET zone).
tu-braunschweig.webex.com/tu-braunschw...
key: Photo2025
5 talks by talented students (one will be awarded🎉) followed by a plenary lecture. Save the date. ✍️

Captivating bimolecular photoredox dynamics of a ligand-to-metal charge transfer complex Transition metal complexes featuring ligand-to-metal charge transfer (LMCT) excited states have been identified as promising candidates for driving electron transfer processes. To obtain an efficient ...

Super excited to see our work monitoring dynamics of the charge separated pair in a photocycle driven by a 2LMCT exited state now out in @chemicalscience.rsc.org ! ⚡️

Thanks for the great team efforts🌟

pubs.rsc.org/en/content/a...

Spin-State and Reorganization Energy Considerations for Metal-Centered Photoredox Catalysis Transition-metal complexes featuring metal-centered excited states have recently emerged as mechanistically distinct platforms for selective photochemistry, including photoredox catalysis. Among these...

Exploring metal-centered photoredox reactivity? 🚀Don’t forget to look at the spin-state landscape and the role of reorganisation energy, they can make a difference 😉

Huge thanks to Bekah for leading the experiments and shaping the story🥳 a true collaborative effort!😃

pubs.acs.org/doi/10.1021/...

Design of Chromium(III) Chromophores with Independent Control of Redox and Optical Properties - ChemistryViews Katja Heinze and Robert Naumann, Mainz, synthesized a series of chromium(III) chromophores with identical optical properties but systematically tunable redox behavior to study photoredox mechanisms

Katja Heinze, Robert Naumann, and Steven Sittel (Mainz) synthesized a series of chromium(III) chromophores with identical optical properties but systematically tunable redox behavior to study photoredox mechanisms
www.chemistryviews.org/independent-...

Excited to share the publication of “Enhancing the Statistical Probability Factor in Triplet-Triplet Annihilation Photon Upconversion via TIPS Functionalization” in @chemicalscience.rsc.org

pubs.rsc.org/en/content/a...

Very happy about this first #catalaix publication for us, supported by the Werner Siemens-Stiftung ! #bioplastics #circulareconomy
We also make the data openly available at @radar-service.bsky.social : radar4chem.radar-service.eu/radar/en/dat...
Thank you to @nfdi4chem.de !

Thermally Activated and Nonactivated Excited State Decay of [Cr(dgpy)2]3+ | Inorganic Chemistry pubs.acs.org/doi/10.1021/... @LabHeinze and co-workers @InorgChem #chromium #aliphatic #guanidines #thermally_activated_nonactivated #EnT #bISC #spin_flip #VibrationalOvertones #NIR

GDCh schließt sich Klimaaufruf von DMG und DPG an. Die Gesellschaft Deutscher Chemiker (GDCh) schließt sich dem gemeinsamen Aufruf der Deutschen Meteorologischen Gesellschaft (DMG) und der Deutschen Physikalischen Gesellschaft (DPG) an. „Globale Erwär...

Die GDCh schließt sich dem Klimaaufruf von DPG und DMG an:
gdch.app/article/gdch...

So happy this piece is finally out! A tremendous collaborative effort of colleagues and friends from 8 institutions all over Europe. Thank you! doi.org/10.1038/s414...
Photochemistry and photophysics in a single crystal @jagiellonskiuni.bsky.social @cleracr.bsky.social @natcomms.nature.com

We are looking for postdoctoral candidates in the areas of organic electronics, operando spectroscopy in catalysis, advanced EPR. CV and cover letter to slageren@ipc.uni-stuttgart.de, stating what complementary expertise you bring and why our group interests you.

Thank you, Lena. 🙏

Manganese edges into the realm of noble-metal photochemistry Pairing manganese with an off-the-shelf ligand yields a low-cost complex that mimics precious-metal photocatalysts

Researchers at Johannes Gutenberg University Mainz report a manganese complex that stays energized for 190 ns after absorbing light—a record for low-cost abundant metals. cen.acs.org/materials/in... #chemsky 🧪

The figure shows the molecular structure of the manganese complex (center), a cuvette containing a solution of the purple manganese complex (top left), the absorption spectrum of the complex, which explains its high color intensity (purple), and the luminescence spectrum of the complex, which was used to measure its long lifetime (green). (ill./©: Katja Heinze)

Common metal, unusual power: New manganese(I) complex breaks lifetime record for excited states / Combination of a #manganese salt and a ligand paves the way for future large-scale applications of #photochemistry 👉 press.uni-mainz.de/common-metal...

#SustainableChemistry #SusInnoScience

synthesis, absorption and emission spectrum, photoluminescence decay of a manganese(I) complex

From sub-picoseconds to 190 nanoseconds! Replacing #iron (II) by #manganese (I) gives record excited state lifetime. The paper in @natcomms.nature.com ‬reports #coherence, #photoluminescence and excited state #electrontransfer. #earth-abundant metal plus simple #carbene #ligand. rdcu.be/eBWsL

Promiscuity in Molecular Mimics of the Cysteine Dioxygenase: Effects of Selenium in the Substrate and Cobalt as the Central Metal Ion A biomimetic model for the cysteine dioxygenase (CDO) was found to be also capable of selectively dioxygenating selenocysteamine, suggesting that the lack of reactivity found for the CDO in combinati....

O2 activation at biomimetic Fe complexes/first O2-dioxygenation mediated by a Co center. onlinelibrary.wiley.com/doi/10.1002/... Great work by Kilian! Thx also to the de Visser group for fruitful collaboration, @dfg.de for funding within the research group “BioOxCat” and @humboldtuni.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

Become my colleague!!! We are recruiting in a junior faculty level. Junior Professor for Theoretical Chemistry of Macromolecular and Supramolecular Systems
#simulations #theory #noneqsys #assistantprofessor #chemjob
Thank you for sharing this.

berufungsportal.uni-mainz.de/ausschreibun...

1 week left to apply for a PhD position, 4 y. with 2/3 of E 13 TV-L salary, assigned broadly to the design and synthesis of coordination compds for the activation of small molecules (www.chemie.hu-berlin.de/aglimberg/st...). Pls apply directly to christian.limberg@chemie.hu-berlin.de. Pls retweet!

Brilliant study of using high energy excited states as reactants by Björn Pfund and Oliver Wenger! Speed up k(ET) over k(IC) is the key - explained by Marcus theory. Congratulations!

Did you know that #stannylenes can shine orange and green?
Philipp elucidated the mechanism of the dual #emission, the #excited state #dynamics, #excimer formation and light-induced bond #homolysis. #Maingroup #tin #photophysics #photochemistry onlinelibrary.wiley.com/doi/10.1002/anie.202510044

Die DFG richtet 7 neue Forschungsgruppen ein Das Fördervolumen für die Neueinrichtungen beträgt insgesamt 33,4 Mio. Euro für die erste Förderperiode inkl. je 22 % Programmpauschale für indirekte Projektausgaben. 3 Forschungsgruppen werden um eine weitere Förderperiode von vier Jahren verlängert.

Förderentscheidungen zu #Forschungsgruppen durch den Hauptausschuss der DFG im Rahmen der Jahresversammlung: 7 Neueinrichtungen, 3 Verlängerungen. Die neuen Forschungsgruppen erhalten insges. rund 33 Mio. € für die erste Förderperiode. Mehr zu den Themen / Institutionen: www.dfg.de/de/service/p...

The next masterpiece from Matthias focusing on Coulombic dyads as new #photocatalyst class has been accepted in ACIE. Higher quantum yields in red-light catalysis by adding an inexpensive salt to use #Os as efficiently as possible. onlinelibrary.wiley.com/doi/10.1002/... @labheinze.bsky.social

Oxidative two-state photoreactivity of a manganese(IV) complex using near-infrared light - Nature Chemistry The design of highly oxidizing Earth-abundant transition metal complexes for photochemical applications is desirable, but progress in this area remains limited. Now a manganese(IV) diguanidylpyridine ...

Important and detailed photophysical study. Congrats.👍Static quenching of short-lived high-energy excited states is also possible for highly oxidizing manganese(IV) complexes, see doi.org/10.1038/s415.... The solvent plays a key role as quencher and redox mediator in this system.

High-pressure pump–probe experiments reveal the mechanism of excited-state proton-coupled electron transfer and a shift from stepwise to concerted pathways Nature Chemistry - Chemical energy conversion and storage rely on the selective movement of protons and electrons, thus understanding these processes is important for applications. Now experiments...

This is a clever way to distinguish PCET from PT/ET pathways: using pressure.

ET/PT mechanisms lead to larger volume changes due to solvation of charged species.

@guldi-group.bsky.social @natchem.nature.com

rdcu.be/etauw

Prof. Dr. Katja Heinze, Professorin im Department Chemie der Johannes Gutenberg-Universität Mainz (Foto/©: Eric Lichtenscheid)

Gewinn für #SusInnoSience: Mainzer Chemikerin Katja Heinze wurde durch @humboldt-foundation.de zum "Scout" ernannt und kann nun bis zu 3 exzellente Forschende in frühen Karrierephasen für ein Stipendium der Stiftung vorschlagen und an die #UniMainz einladen 👉 presse.uni-mainz.de/alexander-vo...

GDCh unterzeichnet die Stockholm Declaration on Chemistry for the Future: gdch.app/article/gdch...

A Near-Infrared-II Luminescent and Photoactive Vanadium(II) Complex with a 760 ns Excited State Lifetime Ruthenium and iridium are key components in the most important applications of photoactive complexes, namely, light-emitting devices, photocatalysis, bioimaging, biosensing, and photodynamic therapy. ...

Long-lived #excited states with non-precious transition metals? Check Alexandra’s paper on a polypyridine #vanadium complex. #luminescence and #photocatalysis in #water published in @jacs.acspublications.org
pubs.acs.org/doi/10.1021/jacs.5c04471 #ChemSky

Pushing the limit of triplet–triplet annihilation photon upconversion towards the UVC range Triplet–triplet annihilation photon upconversion (TTA-UC) provides a milder alternative to traditional UVB/UVC photochemistry. However, suitable sensitizer-annihilator pairs are scarce, in particular…

New Hot article from @ckerzig.bsky.social, @gloriusfrank.bsky.social and colleagues:

'Pushing the limit of triplet–triplet annihilation photon upconversion towards the UVC range' 🔥

#OpenAccess 🔓

One photon or two photons, that is the question. We discuss mechanistic challenges, pitfalls, and opportunities for future research in two-photon photocatalysis @angewandtechemie.bsky.social. Many thanks to first-authors Julian and Sophie.

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

Ultrafast solvent migration in an iron complex revealed by nonadiabatic dynamics simulations The response of a solvation shell to molecular solute photoexcitation is an ubiquitous phenomenon of great relevance in chemistry. This response can occur within just few tens of femtoseconds, making ...

#LVC/MM to study an Fe complex excited state dynamics ☀️ in explicit solvent with #SHARC 🦈. A wonderful work from Severin Polonius and @sebastian-mai.bsky.social .
Published in #ChemicalScience @rsc.org
@univie.ac.at

pubs.rsc.org/en/content/a...