bjoernpfund.bsky.social
Björn Pfund
@bjoernpfund.bsky.social
72 followers 140 following 1 posts
Postdoc in the McCusker group | PhD at University of Basel Photochemistry🔦 | Lasers⚡️ | Spectroscopy 📸
Posts Media Videos Starter Packs
Reposted by Björn Pfund
unibas.ch
University of Basel @unibas.ch · Aug 25
Artificial photosynthesis could be the key to environmentally friendly fuels. A research team led by @wengeroliver.bsky.social has developed a special molecule that can store four charges simultaneously under light irradiation. Wenger calls this molecule "an important piece of the puzzle."
Chemists develop molecule for important step toward artificial photosynthesis
A research team from the University of Basel has developed a new molecule modeled on plant photosynthesis: under the influence of light, it stores two positive and two negative charges at the same tim...
www.unibas.ch
3 13
Reposted by Björn Pfund
wengeroliver.bsky.social
Oliver Wenger @wengeroliver.bsky.social · Aug 4
Rethinking Iron Photoredox Catalysis

For Fe(III) complexes, excited-state redox potentials don’t follow the usual rules - standard estimation methods fall short

Joël Wellauer with Paul Francis & colleagues at Deakin University in @jacs.acspublications.org

pubs.acs.org/doi/10.1021/...
Rethinking the Excited-State Redox Properties of Iron(III) Complexes for LMCT Photoredox Catalysis
The reduction potentials of electronically excited states are crucial input values for photoredox reaction design. Since they are not directly measurable, they are typically estimated from the corresp...
pubs.acs.org
5 19
Reposted by Björn Pfund
wengeroliver.bsky.social
Oliver Wenger @wengeroliver.bsky.social · Jul 29
Cr(III) complexes with enhanced metal–ligand covalency enable tunable NIR luminescence and red-light photoreduction.

@giacomo-morselli94.bsky.social & team find signs of doublet–doublet annihilation, or excited-state disproportionation.

In @jacs.acspublications.org

pubs.acs.org/doi/10.1021/...
Pushing the Thermodynamic and Kinetic Limits of Near-Infrared Emissive CrIII Complexes in Photocatalysis
Photoactive CrIII complexes are typically based on polypyridine coordination environments, exhibit red luminescence, and are good photo-oxidants but have modest photoreducing properties. We report new...
pubs.acs.org
7 20
Reposted by Björn Pfund
wengeroliver.bsky.social
Oliver Wenger @wengeroliver.bsky.social · Jul 31
Bite angle optimization weakens ligand fields in cobalt(III) complexes, yet lifetimes can increase due to rigidification

pi-donor (instead of pi-acceptor) ligand properties are key

now in @jacs.acspublications.org

pubs.acs.org/doi/10.1021/...
Structural Control of Metal-Centered Excited States in Cobalt(III) Complexes via Bite Angle and π–π Interactions
CoIII complexes have recently become an important focus in photophysics and photoredox catalysis due to metal-centered excited states with strong oxidizing properties. Optimizing chelate ligand bite a...
pubs.acs.org
3 19
Reposted by Björn Pfund
wengeroliver.bsky.social
Oliver Wenger @wengeroliver.bsky.social · Jul 18
We show how photoredox catalysis can bypass Kasha’s rule, enabling reactions from higher excited states.

This work, led by the exceptional @bjoernpfund.bsky.social, offers new insights into photochemical reactivity.

Published in JACS @jacs.acspublications.org

bit.ly/3IysmjX
Breaking Kasha’s Rule to Enable Higher Reactivity in Photoredox Catalysis
Nearly all photochemical transformations known to date follow Kasha’s rule, implying that reactions occur only from the lowest electronically excited state of a given spin multiplicity due to the fast...
bit.ly
3 12 36
bjoernpfund.bsky.social
Björn Pfund @bjoernpfund.bsky.social · Jul 18
Thrilled to share our new JACS paper on anti-Kasha photoreactivity!
We show that higher-lying excited states can drive electron transfer — opening new doors for photoredox catalysis.
Huge thanks to @wengeroliver.bsky.social for the incredible mentorship!

pubs.acs.org/doi/10.1021/...
pubs.acs.org
1 9