Christoph Kerzig
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View article: At the “Peak” of Vis-to-UV Upconversion: Clear Advantages of TIPS Substituents for a Biphenyl Annihilator
At the “Peak” of Vis-to-UV Upconversion: Clear Advantages of TIPS Substituents for a Biphenyl Annihilator Open
Sensitized triplet-triplet annihilation systems enable the efficient conversion of two low-energy photons from a low-intensity, noncoherent light source into one high-energy photon, opening avenues for diverse applications. The attachment …
View article: Efficient Red Light–Driven Singlet Oxygen Photocatalysis with an Osmium‐Based Coulombic Dyad
Efficient Red Light–Driven Singlet Oxygen Photocatalysis with an Osmium‐Based Coulombic Dyad Open
Photoactive osmium complexes are widely used sensitizers for the generation of singlet oxygen because they can be excited directly into their triplet states with low‐energy red light. However, their short‐lived excited states reduce quench…
View article: Efficient Red Light–Driven Singlet Oxygen Photocatalysis with an Osmium‐Based Coulombic Dyad
Efficient Red Light–Driven Singlet Oxygen Photocatalysis with an Osmium‐Based Coulombic Dyad Open
Photoactive osmium complexes are widely used sensitizers for the generation of singlet oxygen because they can be excited directly into their triplet states with low‐energy red light. However, their short‐lived excited states reduce quench…
View article: Direct Observation of Triplet–Triplet Energy Transfer in DNA between Energy Donor and Acceptor C-Nucleotides
Direct Observation of Triplet–Triplet Energy Transfer in DNA between Energy Donor and Acceptor C-Nucleotides Open
Investigating the migration of excited-state energy in DNA is crucial for a deep understanding of protection mechanisms and light-induced DNA damage. While numerous reports focused on single electron transfer and Förster-type energy transf…
View article: Bichromophoric Ruthenium Complexes for Photocatalyzed Late-Stage Synthesis of Trifluoromethylated Indolizines
Bichromophoric Ruthenium Complexes for Photocatalyzed Late-Stage Synthesis of Trifluoromethylated Indolizines Open
Indolizines are a promising class of biologically active compounds. However, photocatalytic methods for their selective derivatization are scarce in the literature. Herein, a mild, simple, and chemoselective protocol for the synthesis of 3…
View article: Direct Observation of Triplet-Triplet Energy Transfer Between C-Nucleotides of Thioxanthone and Naphthalene in DNA
Direct Observation of Triplet-Triplet Energy Transfer Between C-Nucleotides of Thioxanthone and Naphthalene in DNA Open
Investigating the migration of excited-state energy in DNA is crucial for a deep understanding of protection mechanisms and light-induced DNA damage. While numerous reports focused on single electron transfer and Förster-type energy transf…
View article: π-Extended diphosphonium-bridged ladder stilbenes: water-soluble fluorophores with up to eight annulated rings
π-Extended diphosphonium-bridged ladder stilbenes: water-soluble fluorophores with up to eight annulated rings Open
Synthetic procedures accompanied by DFT-based mechanistic studies for the preparation of novel fluorophores with efficient red emission and attractive redox potentials are presented, paving the way for applications in optoelectronics and i…
View article: Pushing the limit of triplet–triplet annihilation photon upconversion towards the UVC range
Pushing the limit of triplet–triplet annihilation photon upconversion towards the UVC range Open
A benzene-based annihilator and a high triplet energy sensitizer were combined in an upconversion scheme, emitting photons with unprecedented energy.
View article: Triplet-sensitized cyclobutane pyrimidine dimer damage and crosslinks in DNA: filling the triplet energy gap between xanthone and thioxanthone
Triplet-sensitized cyclobutane pyrimidine dimer damage and crosslinks in DNA: filling the triplet energy gap between xanthone and thioxanthone Open
The amount of cyclobutane pyrimidine dimers formed, a well-known DNA photodamage, primarily depends on the triplet energy of the photosensitizers. This relationship was elucidated using two new thioxanthones as C-nucleotides in DNA.
View article: Extension of the π-system of monoaryl-substituted norbornadienes with acetylene bridges: influence on the photochemical conversion and storage of light energy
Extension of the π-system of monoaryl-substituted norbornadienes with acetylene bridges: influence on the photochemical conversion and storage of light energy Open
The photochromic norbornadiene/quadricyclane pair is a promising system for molecular solar thermal (MOST) energy storage, with which solar energy may be converted, stored, and released as heat in one integral molecular system. Herein, we …
View article: Arylthianthrenium Salts for Triplet Energy Transfer Catalysis
Arylthianthrenium Salts for Triplet Energy Transfer Catalysis Open
Sigma bond cleavage through electronically excited states allows synthetically useful transformations with two radical species. Direct excitation of simple aryl halides to form both aryl and halogen radicals necessitates UV-C light, so und…
View article: Triplet‐Sensitized Switching of High‐Energy‐Density Norbornadienes for Molecular Solar Thermal Energy Storage with Visible Light
Triplet‐Sensitized Switching of High‐Energy‐Density Norbornadienes for Molecular Solar Thermal Energy Storage with Visible Light Open
Norbornadiene‐based photoswitches have emerged as promising candidates for harnessing and storing solar energy, holding great promise as a viable solution to meet the growing energy demands. Despite their potential, the effectiveness of th…
View article: Triplet‐Sensitized Switching of High‐Energy‐Density Norbornadienes for Molecular Solar Thermal Energy Storage with Visible Light
Triplet‐Sensitized Switching of High‐Energy‐Density Norbornadienes for Molecular Solar Thermal Energy Storage with Visible Light Open
Norbornadiene‐based photoswitches have emerged as promising candidates for harnessing and storing solar energy, holding great promise as a viable solution to meet the growing energy demands. Despite their potential, the effectiveness of th…
View article: Challenges and Future Perspectives in Photocatalysis: Conclusions from an Interdisciplinary Workshop
Challenges and Future Perspectives in Photocatalysis: Conclusions from an Interdisciplinary Workshop Open
Photocatalysis is a versatile and rapidly developing field with applications spanning artificial photosynthesis, photo-biocatalysis, photoredox catalysis in solution or supramolecular structures, utilization of abundant metals and organoca…
View article: Arylthianthrenium salts for triplet energy transfer catalysis
Arylthianthrenium salts for triplet energy transfer catalysis Open
Sigma bond cleavage through electronically excited states allows synthetically useful transformations with two radical species. Direct excitation of simple aryl halides to form both aryl and halogen radicals necessitates UV-C light, so und…
View article: Mechanistic investigations of polyaza[7]helicene in photoredox and energy transfer catalysis
Mechanistic investigations of polyaza[7]helicene in photoredox and energy transfer catalysis Open
Organic photocatalysts frequently possess dual singlet and triplet photoreactivity and a thorough photochemical characterization is essential for efficient light-driven applications. In this article, the mode of action of a polyazahelicene…
View article: Efficient Energy and Electron Transfer Photocatalysis with a Coulombic Dyad
Efficient Energy and Electron Transfer Photocatalysis with a Coulombic Dyad Open
Photocatalysis holds great promise for changing the way how value-added molecules are currently prepared. However, many photocatalytic reactions suffer from lousy quantum yields, hampering the transition from lab-scale reactions to large-s…
View article: Chemical and photophysical properties of amine functionalized bis‐NHC‐pyridine‐Ru<sup>II</sup> complexes
Chemical and photophysical properties of amine functionalized bis‐NHC‐pyridine‐Ru<sup>II</sup> complexes Open
The effects of backbone amine functionalization in three new homoleptic C^N^C type ruthenium(II) complexes bearing a tridentate bis‐imidazole‐2‐ylidene pyridine ligand framework are characterized and studied by single crystal diffraction, …
View article: Dicationic Acridinium/Carbene Hybrids as Strongly Oxidizing Photocatalysts
Dicationic Acridinium/Carbene Hybrids as Strongly Oxidizing Photocatalysts Open
A new design concept for organic, strongly oxidizing photocatalysts is described based upon dicationic acridinium/carbene hybrids. A highly modular synthesis of such hybrids is presented and the dications are utilized as novel, tailor-made…
View article: CCDC 2224633: Experimental Crystal Structure Determination
CCDC 2224633: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2224634: Experimental Crystal Structure Determination
CCDC 2224634: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2251140: Experimental Crystal Structure Determination
CCDC 2251140: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2249215: Experimental Crystal Structure Determination
CCDC 2249215: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2249214: Experimental Crystal Structure Determination
CCDC 2249214: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2250334: Experimental Crystal Structure Determination
CCDC 2250334: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2249213: Experimental Crystal Structure Determination
CCDC 2249213: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Geometric Isomerisation of Bifunctional Alkenyl Fluoride Linchpins: Stereodivergence in Amide and Polyene Bioisostere Synthesis
Geometric Isomerisation of Bifunctional Alkenyl Fluoride Linchpins: Stereodivergence in Amide and Polyene Bioisostere Synthesis Open
Amide groups are pervasive across the chemical space continuum, where their structural and pharmacological importance, juxtaposed with the hydrolytic vulnerabilities, continues to fuel bioisostere development. Alkenyl fluorides have a vene…
View article: Geometric Isomerisation of Bifunctional Alkenyl Fluoride Linchpins: Stereodivergence in Amide and Polyene Bioisostere Synthesis
Geometric Isomerisation of Bifunctional Alkenyl Fluoride Linchpins: Stereodivergence in Amide and Polyene Bioisostere Synthesis Open
Amide groups are pervasive across the chemical space continuum, where their structural and pharmacological importance, juxtaposed with the hydrolytic vulnerabilities, continues to fuel bioisostere development. Alkenyl fluorides have a vene…
View article: CCDC 2236116: Experimental Crystal Structure Determination
CCDC 2236116: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2236113: Experimental Crystal Structure Determination
CCDC 2236113: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …