@Larsen_Lab

Inorganic and Supramolecular Photochemistry/Photophysics Group at the School of Chemical Sciences (@SCSatUoA), University of Auckland (@AucklandUni)

 Auckland, New Zealand
profiles.auckland.ac.nz/christopher-larsen
Joined June 2016
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  • Following282
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62Media
New molecular design absorbs 2 photons to store 2 positive and 2 negative charges 100 ns lifetime, 3 eV energy storage, and 37% quantum yield A step toward multi-electron photochemistry Mathis Brändlin and @BjornPfund in @NatureChemistry nature.com/articles/s41557-0…
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Bite angle optimization weakens ligand fields in cobalt(III) complexes, yet lifetimes can increase due to rigidification pi-donor ligand properties are key New insights by @PolinaYaltseva in @J_A_C_S pubs.acs.org/doi/10.1021/jac…

Structural Control of Metal-Centered Excited States in Cobalt(III) Complexes via Bite Angle and π–π...

Abstract. CoIII complexes have recently become an important focus in photophysics and photoredox catalysis due to metal-centered excited states with strong

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Cr(III) complexes with enhanced metal–ligand covalency enable tunable NIR luminescence and endergonic red-light photoreduction. @GiacomoMorsell2 and team find signs of doublet–doublet annihilation, or excited-state disproportionation. Now in @J_A_C_S: pubs.acs.org/doi/10.1021/jac…

Pushing the Thermodynamic and Kinetic Limits of Near-Infrared Emissive CrIII Complexes in Photoca...

Abstract. Photoactive CrIII complexes are typically based on polypyridine coordination environments, exhibit red luminescence, and are good photo-oxidants

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Check out our new preprint at ChemRxiv on a new cyclometalated cobalt(III) complex that shows 700 nm emission at low temperatures chemrxiv.org/engage/chemrxiv…

A Cyclometalated Cobalt(III) Triazolylidene Photosensitiser Complex Exhibiting Enhanced Light-Har...

The exploration of the novel photochemistry offered by Earth-abundant first row transition metal complexes as replacements for photosensitiser complexes based on rare and expensive 4d and 5d metals...

chemrxiv.org
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Our in-depth study about how to avoid dissipation in solar-energy conversion using molecular chromophores is a HOT🔥paper @angew_chem @SolarFAU @UniFAU In collab with fantastic @LudoTroian & team under European WEAVE program
Angewandte Chemie@angew_chem30 Jun 2025
Nature of Anti-Dissipative High-Energy Excited States in Quaterpyridine-Bridged Ruthenium Complexes (Alejandro Cadranel and co-workers) @LudoTroian @CadraLab #openaccess 🔓 onlinelibrary.wiley.com/doi/…
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Our work with the great @CadraLab and his team was just published in ACIE! Noémie also enjoyed a two months stay at Erlangen to get hands on experience! @frsFNRS (DfG Weave project) @WELRI_asbl
Angewandte Chemie@angew_chem30 Jun 2025
Nature of Anti-Dissipative High-Energy Excited States in Quaterpyridine-Bridged Ruthenium Complexes (Alejandro Cadranel and co-workers) @LudoTroian @CadraLab #openaccess 🔓 onlinelibrary.wiley.com/doi/…
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Cyclometallated Co(III) Complexes with Lowest-Energy Charge Transfer Excited States Accessible with Visible Light | Journal of the American Chemical Society @OSU_CBC @OhioState pubs.acs.org/doi/10.1021/jac…

Cyclometallated Co(III) Complexes with Lowest-Energy Charge Transfer Excited States Accessible with...

Abstract. The Co­(III) complexes, cis-[Co­(ppy)2(L)]­PF6, where ppy = 2-phenylpyridine and L = bpy (2,2′-bipyridine; 1), phen (1,10-phenanthroline; 2), and

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A simple guide to the design of metal complexes in luminescence and photoredox catalysis. With @GiacomoMorsell2 and @reber_christian in @J_A_C_S: pubs.acs.org/doi/10.1021/jac…

Molecular Design Principles for Photoactive Transition Metal Complexes: A Guide for “Photo-Motiva...

Abstract. Luminescence and photochemistry involve electronically excited states that are inherently unstable and therefore spontaneously decay to electroni

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Low-Symmetry Face-Capped Fe(II) Tetrahedra Through Anisotropic Ligand Extension (Dan Preston and co-workers) @PrestonChem #openaccess 🔓 onlinelibrary.wiley.com/doi/…

Low‐Symmetry Face‐Capped Fe(II) Tetrahedra Through Anisotropic Ligand Extension

A strategy for the formation of low-symmetry face-capped Fe(II) tetrahedra using anisotropic ligand extension is reported. The degree of distortion in the resulting tetrahedra correlates to the...

onlinelibrary.wiley.com
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Iron(III) complexes with luminescence lifetimes of up to 100 nanoseconds to enhance upconversion and photocatalysis Published in @J_A_C_S, Joel Wellauer and @BjornPfund in collaboration with @AKMeyer_Goe pubs.acs.org/doi/10.1021/jac…

Iron(III) Complexes with Luminescence Lifetimes of up to 100 ns to Enhance Upconversion and...

Abstract. Iron is the most abundant transition metal element and would be the ideal replacement for noble metals in many applications that rely on luminesc

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Microsecond Dark Excited-State Lifetime and Large Cage Escape Yield Afforded by an Iron–Anthracene Molecular Dyad! Electron and energy transfer become accessible! Check out our latest work, spearheaded by the great Felix and Simon! Out in @J_A_C_S now! pubs.acs.org/doi/full/10.102…

Two Birds, One Stone: Microsecond Dark Excited-State Lifetime and Large Cage Escape Yield Afforded...

Abstract. Iron photosensitizers represent a holy grail in photochemistry, but their widespread implementation is limited by their short excited-state lifet

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Very proud to see my first last-author paper published! We report dramatic effects of a ligand backbone modification on 3MLCT lifetimes in Cr/Mo/W complexes. Read how we disentangle potential energy well flattening, conformations and self-quenching! pubs.acs.org/doi/10.1021/acs…

A Blessing and a Curse: Remote Ligand Functionalization Modulates 3MLCT Relaxation in Group 6...

Abstract. We recently reported a molecular design for carbonylpyridine molybdenum(0) complexes that unlocks long-lived luminescent and photoactive charge-t

pubs.acs.org
Ken Lo@bhkenlo26 Feb 2025
A Blessing and a Curse: Remote Ligand Functionalization Modulates 3MLCT Relaxation in Group 6 Tricarbonyl Complexes pubs.acs.org/doi/10.1021/acs… @winald_kitzmann @LabHeinze and co-workers @InorgChem #chromium #molybdenum #tungsten #carbonylpyridine #3MLCT #flattening #spacer
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Larsen Lab retweeted
Ken Lo@bhkenlo26 Feb 2025
A Blessing and a Curse: Remote Ligand Functionalization Modulates 3MLCT Relaxation in Group 6 Tricarbonyl Complexes pubs.acs.org/doi/10.1021/acs… @winald_kitzmann @LabHeinze and co-workers @InorgChem #chromium #molybdenum #tungsten #carbonylpyridine #3MLCT #flattening #spacer
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Hot off the press! Copper(I) Photoredox Catalysts Bearing Tetradentate Phenanthroline-Based Ligands pubs.acs.org/doi/10.1021/acs… #organometallics #catalysis #photoredox #inorganic #ozchem

Copper(I) Photoredox Catalysts Bearing Tetradentate Phenanthroline-Based Ligands: Understanding the...

Abstract. Phenanthroline-based copper­(I) complexes represent some of the earliest reported photoredox catalysts. Many of these species exhibit poor coordi

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Bryan Hunter@whoisBMH4 Feb 2025
Fresh out in @InorgChem, we examined the electronic structures of p2 ions, one with large spin-orbit (Te) and one with small (Se). The SI works out the calculations in detail. This paper was written by my CHEM 435 students as their final exam! pubs.acs.org/doi/10.1021/acs… @NUChemistry

Theoretical and Spectroscopic Analysis of Square-Planar Tellurium(II) and Selenium(II) Diphenyl...

Abstract. In this work, we performed a detailed mathematical ligand field theory analysis of square-planar (D4h) main group complexes in p2 electronic conf

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Excited organic radicals in photoredox catalysis Perspective in @JACS_Au by @BjornPfund pubs.acs.org/doi/10.1021/jac… You can also follow us on the other platform if you are interested
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Check out @WengerOliver and my perspective delving into the role of organic radicals in photoredox catalysis: from catalysis and mechanistic studies to (sub)-picosecond reactivity and the potential of anti-Kasha reactivity! pubs.acs.org/doi/10.1021/jac…

Excited Organic Radicals in Photoredox Catalysis

Abstract. Many important synthetic-oriented works have proposed excited organic radicals as photoactive species, yet mechanistic studies raised doubts abou

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Ken Lo@bhkenlo4 Aug 2022
Luminescent and Photofunctional Transition Metal Complexes: From Molecular Design to Diagnostic and Therapeutic Applications pubs.acs.org/doi/10.1021/jac… Lee & @bhkenlo @J_A_C_S #luminescence #photofunctions #uptake #phosphorogenic #bioorthogonal #bioimaging #PDT #photocatalytic #PACT
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Making Mo(0) a Competitive Alternative to Ir(III) in Phosphors and Photocatalysts - by @TaoJin14546841, @NarayanSinha01, @DorotheeSWagner, now published in @J_A_C_S pubs.acs.org/doi/10.1021/jac… You can also follow us on the other platform if you are interested
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Strain-Induced Photochemical Opening of Ferrocene[6]cycloparaphenylene: Uncaging of Fe2+ with Green Light | Journal of the American Chemical Society @uzh_irem @UZH_Science @PStacko @TomSolomek @HimsUva pubs.acs.org/doi/10.1021/jac…

Strain-Induced Photochemical Opening of Ferrocene[6]cycloparaphenylene: Uncaging of Fe2+ with Green...

Abstract. We present the synthesis, structural analysis, and remarkable reactivity of the first carbon nanohoop that fully incorporates ferrocene in the ma

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