Katja Heinze's research group University of Mainz

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...

Sie sind Vorbilder für Nachwuchswissenschaftler:innen und prägen durch ihren herausragenden Einsatz in Forschung & Entwicklung den Innovationsstandort 🇩🇪 entscheidend mit: unsere Dozentenpreisträger:innen Corina Andronescu, @ckerzig.bsky.social & Golo Storch! www.vci.de/fonds/preise...

TOMORROW: the first Global Inorganic Virtual Seminar with @TheBartLab and @harder_research riceuniversity.zoom.us/webinar/regi...

Happy to see our recent paper in Inorganic Chemistry highlighted as a cover!

We found that slight distortions of the ligand can lengthen or shorten the excited state lifetimes in group 6 carbonyl complexes.

Check out the full story here: pubs.acs.org/doi/10.1021/...

@labheinze.bsky.social

This week I joined the German Chemical Society @gdch.bsky.social as a coordinating manager of its divisions and I am very excited. This also means that my time at Angewandte @angewandtechemie.bsky.social is over, so in this thread I would like to look back at the past six years. (1/22)

Perhaps of interest for you? The global inorganic virtual seminar in organometallic chemistry, see below!
riceuniversity.zoom.us/webinar/regi...

Can you #recyle your molecular #photocatalyst? Can you use #water in your #photocatalysis? Can you use #sunlight? Can undergrads prepare the photocatalyst on >12 g scale? Out now in Advanced Synthesis and Catalysis lmy.de/BgahY. Thanks to @dfg.de for funding.

Our paper doi.org/10.1039/D4SC... on "Bridge editing of spin-flip emitters gives insight into excited state energies and dynamics" made it to the popular articles collection from 2024 (lmy.de/aYRWi). 🙏@chemicalscience.rsc.org

Congratulations, Gunnar! Good start in Leipzig!

Cool to catch up with so many friends, and also have some half decent bibimbap and Korean beer. Better is the fantastic chemistry at the final spp meeting organized by @labheinze.bsky.social.

Molecular Design Principles for Photoactive Transition Metal Complexes: A Guide for “Photo-Motivated” Chemists Luminescence and photochemistry involve electronically excited states that are inherently unstable and therefore spontaneously decay to electronic ground states, in most cases by nonradiative energy release that generates heat. This energy dissipation can occur on a time scale of 100 fs (∼10–13 s) and usually needs to be slowed down to at least the nanosecond (∼10–9 s) time scale for luminescence and intermolecular photochemistry to occur. This is a challenging task with many different factors to consider. An alternative emerging strategy is to target dissociative excited states that lead to metal–ligand bond homolysis on the subnanosecond time scale to access synthetically useful radicals. Based on a thorough review at the most recent advances in the field, this article aims to provide a concise guide to obtaining luminescent and photochemically useful coordination compounds with d-block elements. We hope to encourage “photo-motivated” chemists who have been reluctant to apply their synthetic and other knowledge to photophysics and photochemistry, and we intend to stimulate new approaches to the synthetic control of excited state behavior.

A simple guide to the design of metal complexes in luminescence and photoredox catalysis.

With Giacomo Morselli and Christian Reber in JACS @jacs.acspublications.org

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

Mehr als 10.000 Wissenschaftler:innen haben den Appell der @de.scientists4future.org für #Klimaschutz gezeichnet 🙌 Bitte teilt den Appell unter den Kolleg:innen, die in der Wissenschaft aktiv bzw. promoviert sind!
www.bayceer.uni-bayreuth.de/s4f/de/top/o...

Und jetzt müssen wir auch konsequent den weiteren Schritt gehen und eine Ortsgruppe der S4F an der @hhu.de gründen.

Photo of winner of Dalton Transactions lecture prize at KCT 2025.

We proudly sponsored the 19th Coordination Chemistry Meeting (KCT 2025) at @uni-muenster.de last week!

Congratulations to Matthias Schmitz (@mainzuniversity.bsky.social) for being awarded our best lecture prize for their talk on coulombic dyads as new catalyst class for efficient photocatalysis🎉

Thermal- and light-induced valence tautomerism with a concerted spin transition in an iron tris(diimine) complex The switching phenomena of spin crossover (SCO) and valence tautomerism (VT) are respectively dominated by iron(ii) and cobalt-dioxolene systems. To explore new possibilities for SCO or VT, the redox-...

Excited to share another paper from my PhD - out in Chemical Science!
First time valence tautomerism has occurred with a spin-state change in an iron complex. This allowed us to show light-induced valence tautomerism is possible for non-cobalt-dioxolene complexes.💎🧲⚗️

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

A Blessing and a Curse: Remote Ligand Functionalization Modulates 3MLCT Relaxation in Group 6 Tricarbonyl Complexes pubs.acs.org/doi/10.1021/... @winald_kitzmann @LabHeinze and co-workers @InorgChem #chromium #molybdenum #tungsten #carbonylpyridine #3MLCT #flattening #spacer

Infolge von Inflationsentwicklung und Kostensteigerungen: DFG ergreift Maßnahmen zur Ausgabenstabilisierung

Die @dfg.de setzt die Ausschreibung für neue Schwerpunktprogramme (SPPs) für ein Jahr aus.

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

Wie are working on luminescent (emissive) materials. 90% of our publications contain "emission". This list of "forbidden" words feels like Orwellian "newspeak". This a big problem for free and critical thinking, not only in science.