Giacomo Morselli

Homomolecular Photon Upconversion in a Perylene-Decorated Iron(III) Complex Classical upconversion employs sensitizers and annihilators as two distinct molecular species and is, therefore, classified as heteromolecular. Homomolecular upconversion, the unification of both role...

A molecular dyad of an iron complex covalently bound to an annihilator exhibits three photoactive excited states — singlet, doublet, and triplet — enabling homomolecular upconversion

Florian Doettinger, Jonathan Sagaya, Giacomo Morselli 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...

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/...

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/...

Excited to share that our review "Luminescent copper indium sulfide (CIS) quantum dots for bioimaging applications" has been selected for this special collection in Nanoscale Horizons! Grateful for the recognition! You can read it here: pubs.rsc.org/en/content/a...