A5080758270- Electrocatalysts for Energy Conversion
- CO2 Reduction Techniques and Catalysts
- Advanced battery technologies research
- Advanced Photocatalysis Techniques
- Radical Photochemical Reactions
- Molecular Sensors and Ion Detection
- Porphyrin and Phthalocyanine Chemistry
- Catalytic C–H Functionalization Methods
- Advanced Chemical Physics Studies
- Organometallic Complex Synthesis and Catalysis
- Oxidative Organic Chemistry Reactions
- Lipid Membrane Structure and Behavior
- Lanthanide and Transition Metal Complexes
- Catalysis and Oxidation Reactions
- Photoreceptor and optogenetics research
- Sulfur-Based Synthesis Techniques
- Metal complexes synthesis and properties
Friedrich Schiller University Jena
2018-2024
Leibniz Institute of Photonic Technology
2023-2024
Helmholtz Institute Jena
2018-2024
The utilization of solar energy is restricted by the intermittent nature influx. We present novel noble-metal free complexes that can be photochemically charged in presence sacrificial electron donors and remain stable its form for over 14 h. This allows doubly reduced Cu(I) 4H-imidazolate complex to stored after photochemical charging used as a reagent dark reactions, such reduction methyl viologen or oxygen. Combined UV–vis/EPR spectroelectrochemistry indicates two-electron induced...
Aryl chlorides as substrates for arylations present a particular challenge photoredox catalytic activation due to their strong C(sp2 )-Cl bond and reduction potential. Electron-rich N-phenylphenothiazines, organophotoredox catalysts, are capable of cleaving aryl simply by photoinduced electron transfer without the need an additional electrochemical setup or any other advanced photocatalysis technique. Due extremely potential in excited state N-phenylphenothiazines substrate scope is high...
We present a method of enabling photochemical reactions in water by using biomimetic, water-soluble liposomes and specifically functionalized perylene diimide chromophore. Linking two flexible saturated C4-alkyl chains with terminal positively charged trimethylammonium groups to the rigid core yielded [1]2+ allowing for its co-assembly at lipid bilayer interface DOPG (DOPG = 1,2-dioleoyl-sn-glycero-3-phospho-(1'-rac-glycerol)) preferred orientation close proximity interface. According...
Abstract The use of organic molecules as photosensitizers in photoredox catalysis is an attractive research field it has the potential to replace conventionally used photosensitizers, which are based on rare metals. In context light‐driven hydrogen evolution catalysis, radical formation two perylene monoimide dyes (PMIs) was studied by means electron paramagnetic resonance (EPR) and UV/Vis spectroscopy. PMIs were reduced oxidized both photochemically electrochemically study changes...
Abstract Molecular charge accumulating systems that act as both, photosensitizer and electron storage unit, are of interest in the context multielectron redox processes, e. g. solar fuel production. To this end, photophysical properties RuL1 , a ruthenium tris‐diimine complex with an alloxazine‐based ligand bioinspired structural motif, were investigated. The study includes absorption, emission, resonance Raman transient absorption spectroscopy combination quantum chemical simulations to...
The diurnal day/night cycle is presently of great interest for harvesting solar energy aimed at rendering suitable storage schemes. To this end we present a noble-metal free system based on Cu(I) 4H-imidazolate complex, that efficiently photoreduced in the presence sacrificial donor. two-electron reduced species obtained can be stored dark more than 14 hours. In reaction, photoredox equivalents subsequently transferred to electron acceptors methyl viologen or oxygen, while starting complex...
The diurnal day/night cycle presently is a great challenge for the harvest of solar energy rendering suitable storage schemes inevitable. In described experiments Cu(I) 4H-imidazolate complex efficiently photoreduced in presence sacrificial donor. obtained two-electron reduced species stored more than 14 hours dark. dark reaction, photoredox equivalents can be transferred to an electron acceptor while starting almost completely regained. Repetition photoreduction/reoxidation revealed...
The diurnal day/night cycle is presently of great interest for harvesting solar energy aimed at rendering suitable storage schemes. To this end we present a noble-metal free system based on Cu(I) 4H-imidazolate complex, that efficiently photoreduced in the presence sacrificial donor. two-electron reduced species obtained can be stored dark more than 14 hours. In reaction, photoredox equivalents subsequently transferred to electron acceptors methyl viologen or oxygen, while starting complex...