Röhr Group

Enhancing the Photoswitching Properties of N-Alkyl Imines N-Alkyl imines are prevalent in dynamic-covalent chemistry and self-assembled structures, yet their E/Z photochromism is often overlooked due to the high-energy light required for isomerization. Here, we present a simple strategy to enhance their photoswitching properties, achieving switching wavelengths and photostationary state distributions comparable to azobenzene. Moreover, we demonstrate that these N-alkyl imines undergo photoisomerization in the condensed phase and exhibit isomer-dependent fluorescence. We anticipate that this study will inspire the design of photoresponsive architectures that operate directly at the dynamic-covalent bond, eliminating the need for dedicated photoswitchable motifs.

🚨📢Improving the photoswitching properties of N-alkyl imines, out now in @jacs.acspublications.org 🤔Insights from our previous work led @jiarongwu.bsky.social, Lasse and I to tune the properties of these N-alkyl systems🛠️, where we also observed isomer-dependent fluorescence!💡🔦 doi.org/10.1021/jacs...

16.05.2025 06:56 — 👍 22    🔁 3    💬 4    📌 1

More news from our group – we have an open PhD position in computational catalyst design! If you're interested in applying data science to real-world challenges from the lab, and want to be part of an interdisciplinary team, we'd be happy to hear from you.

Check fsk-lab.github.io for details!

12.05.2025 16:36 — 👍 2    🔁 1    💬 0    📌 0

Our PhD students Johannes and Lasse had a fantastic time at the IRTG2991 Start-up Meeting at IISER TVM, India, enjoying stimulating scientific discussions and great company with the amazing Swathi Group. ✨

Huge thanks to everyone involved for the warm welcome and inspiring exchange. 🙏

23.03.2025 07:30 — 👍 2    🔁 0    💬 0    📌 0

🎓 Looking for opportunities to take the next step in your academic career and interested in ML, medical imaging (and more), and interdisciplinary work?
Come and join us!

More information:
www.caidas.uni-wuerzburg.de/pr/open-posi...

website still under construction 🙈, see also here:
aimi.tf.fau.de

20.03.2025 11:25 — 👍 6    🔁 4    💬 0    📌 0

This is what the stack of four dyes synthesised in Würzburg looks like. It represents a further step towards artificial photosynthesis because it absorbs light energy and transfers it quickly and efficiently in the stack. (Image: Leander Ernst / University of Würzburg)

Our chemists Frank Würthner & Leander Ernst have taken artificial #photosynthesis one step further: @naturechemistry.bsky.social they present a stack of dyes very similar to the photosynthetic apparatus of plants. Congratulations!
➡️ www.uni-wuerzburg.de/en/news-and-...

14.03.2025 10:17 — 👍 5    🔁 1    💬 0    📌 0

The Würzburg model system consisting of two nanographene layers that can absorb and bind chloride ions (green) through a defect in the crystal lattice. (Image: Kazutaka Shoyama / University of Würzburg)

Opening up new perspectives for water filtration or sensor technology @nature.com: the group of our chemist Frank Würthner introduces a #graphene with a defect that allows ions to pass through.
➡️ www.uni-wuerzburg.de/en/news-and-...

24.01.2025 10:02 — 👍 14    🔁 2    💬 0    📌 0

Junior Research Group Dr. Merle Röhr - Nachwuchsgruppe Dr. Merle Röhr

New to Bluesky 🌐 but not to chemistry! 🧪 We're a junior research group @uniwuerzburg.bsky.social, passionate about modeling supramolecular structures and interactions.

Learn more about our research ⬇️
www.chemie.uni-wuerzburg.de/roehr-group/

22.01.2025 08:56 — 👍 1    🔁 0    💬 0    📌 0