Faculty of Life Sciences TU Braunschweig Institute of
Physical and Theoretical Chemistry
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Publications in Peer Reviewed Journals

57 Precious-Metal-Free CO2 Photoreduction Boosted by Dynamic Coordinative Interaction between Pyridine-Tethered Cu(I) Sensitizers and a Co(II) Catalyst
J.-W. Wang, X. Zhang, L. Velasco, M. Karnahl, Z. Li, Z.-M. Luo, Y. Huang, J. Yu, W. Hu, X. Zhang, K. Yamauchi, K. Sakai, D. Moonshiram, G. Ouyang

JACS Au, 2023, 3, 1984-1997.
Abstract & Link to article

56 Rich or poor: the impact of electron donation and withdrawal on the photophysical and photocatalytic properties of copper(I) complexes
F. Doettinger, C. Kleeberg, C. Queffélec, S. Tschierlei, Y. Pellegrin, M. Karnahl

Catal. Sci. Technol., 2023, 13, 4092-4106.
Abstract & Link to article

55 Bright or Dark: Unexpected Photocatalytic Behavior of Closely Related Phenanthroline-based Copper(I) Photosensitizers
F. Doettinger, M. Obermeier, V. Caliskanyürek, L. E. Burmeister, C. Kleeberg, M. Karnahl, M. Schwalbe, S. Tschierlei

ChemCatChem, 2023, 15, e202300452.
Abstract & Link to article

54 Bichromophoric Photosensitizers: How and Where to Attach Pyrene Moieties to Phenanthroline to Generate Copper(I) Complexes
F. Doettinger, Y. Yang, M. Karnahl, S. Tschierlei

Inorg. Chem., 2023, 62, 8166–8178.
Abstract & Link to article

53 Homoleptic Al(III) Photosensitizers for Durable CO2 Photoreduction
J.-W. Wang, F. Ma, T. Jin, P. He, Z.-M. Luo, S. Kupfer, M. Karnahl, F. Zhao, Z. Xu, T. Jin, T. Lian, Y.-L. Huang, L. Jiang, L.-Z. Fu, G. Ouyang, X.-Y. Yi

J. Am. Chem. Soc., 2023, 145, 676-688.
Abstract & Link to article

52 Unexpected Boost in Activity of a Cu(I) Photosensitizer by Stabilizing a Transient Excited State
M. Rentschler, P. J. Boden, M. A. A. Cordero, S. T. Steiger, M.-A. Schmid, Y. Yang, G. Niedner-Schatteburg, M. Karnahl, S. Lochbrunner, S. Tschierlei

Inorg. Chem., 2022, 61, 12249-12261.
Abstract & Link to article

51 How the Way a Naphthalimide Unit is Implemented Affects the Photophysical and -catalytic Properties of Cu(I) Photosensitizers
Y. Yang, F. Doettinger, C. Kleeberg, W. Frey, M. Karnahl, S. Tschierlei

Front. Chem., 2022, 10, 936863.
Abstract & Link to article

50 Merging of a Perylene Moiety Enables a RuII Photosensitizer with Long-Lived Excited States and the Efficient Production of Singlet Oxygen
M.-A. Schmid, J. Brückmann, J. Bösking, D. Nauroozi, M. Karnahl, S. Rau, S. Tschierlei

Chem. Eur. J., 2022, , e202103609.
Abstract & Link to article

49 Comprehensive Picture of the Excited State Dynamics of Cu(I)- and Ru(II)-Based Photosensitizers with Long-Lived Triplet States
M. A. Argüello Cordero, P. J. Boden, M. Rentschler, P. Di Martino-Fumo, W. Frey, Y. Yang, M. Gerhards, M. Karnahl, S. Lochbrunner, S. Tschierlei

Inorg. Chem., 2022, 61, 214-226.
Abstract & Link to article

48 Cross-Coupled Phenyl- and Alkynyl-Based Phenanthrolines and Their Effect on the Photophysical and Electrochemical Properties of Heteroleptic Cu(I) Photosensitizers
F. Doettinger, Y. Yang, M.-A. Schmid, W. Frey, M. Karnahl, S. Tschierlei

Inorg. Chem., 2021, 60, 5391-5401.
Abstract & Link to article

47 Exploring the full potential of photocatalytic CO2 reduction using a dinuclear Re2Cl2 complex assisted by various photosensitizers
R. Giereth, M. Obermeier, L. Forschner, M. Karnahl, M. Schwalbe, S. Tschierlei

ChemPhotoChem, 2021, 5, 644-653.
Abstract & Link to article

46 Electron storage capability and singlet oxygen productivity of a Ru(II) photosensitizer containing a fused naphthaloylenebenzene moiety at the 1,10-phenanthroline ligand
Y. Yang, J. Brückmann, W. Frey, S. Rau, M. Karnahl, S. Tschierlei

Chem. Eur. J., 2020, 26, 17027-17034.
Abstract & Link to article

45 Multidentate Phenanthroline Ligands Containing Additional Donor Moieties and Their Resulting Cu(I) and Ru(II) Photosensitizers: A Comparative Study
M. Rentschler, M.-A. Schmid, W. Frey, S. Tschierlei, M. Karnahl

Inorg. Chem., 2020, 59, 14762−14771.
Abstract & Link to article

44 The coordination behaviour of Cu(I) photosensitizers bearing multidentate ligands investigated by X‐ray absorption spectroscopy
M. Rentschler, S. Iglesias, M.-A. Schmid, C. Liu, S. Tschierlei, W. Frey, X. Zhang, M. Karnahl, D. Moonshiram

Chem. Eur. J., 2020, 26, 9527-9536.
Abstract & Link to article

43 Copper(I) Phosphinooxazoline Complexes: Impact of the Ligand Substitution and Sterical Demand on the Electrochemical and Photophysical Properties
R. Giereth, A. K. Mengele, W. Frey, M. Kloß, A. Steffen, M. Karnahl, S. Tschierlei

Chem. Eur. J., 2020, 26, 2675-2684.
Abstract & Link to article

42 Excited-state dynamics of heteroleptic copper(I) photosensitizers and their electrochemically reduced forms containing a dipyridophenazine moiety - a spectroelectrochemical transient absorption study
Y. Zhang, L. Zedler, M. Karnahl, B. Dietzek

Phys. Chem. Chem. Phys., 2019, 21, 10716-10725.
Abstract & Link to article

41 Remarkably long-lived excited states of copper photosensitizers containing an extended π-system based on an anthracene moiety
R. Giereth, I. Reim, W. Frey, H. Junge, S. Tschierlei, M. Karnahl

Sustainable Energy Fuels, 2019, 3, 692-700.
Abstract & Link to article

40 Imidazo-Phenanthroline Ligands as a Convenient Modular Platform for the Preparation of Heteroleptic Cu(I) Photosensitizers
M.-A. Schmid, M. Rentschler, W. Frey, S. Tschierlei, M. Karnahl

Inorganics, 2018, 6(4), 134.
Abstract & Link to article

39 Cu(I) vs. Ru(II) photosensitizers: elucidation of electron transfer processes within a series of structurally related complexes containing an extended π-system
Y. Zhang, P. Traber, L. Zedler, S. Kupfer, S. Gräfe, M. Schulz, W. Frey, M. Karnahl, B. Dietzek

Phys. Chem. Chem. Phys., 2018, 20, 24843-24857.
Abstract & Link to article

38 Morphology, Optical Properties and Photocatalytic Activity of Photo- and Plasma-Deposited Au and Au/Ag Core/Shell Nanoparticles on Titania Layers
A. Müller, S. Peglow, M. Karnahl, A. Kruth, H. Junge, V. Brüser, C. Scheu

Nanomaterials, 2018, 8(7), 502.
Abstract & Link to article

37 Impact of the Type of Reactor and the Catalytic Conditions on the Photocatalytic Production of Hydrogen Using a Fully Noble‐Metal‐Free System
I. Reim, B. Wriedt, Ü. Tastan, D. Ziegenbalg, M. Karnahl

ChemistrySelect, 2018, 3, 2905-2911.
Abstract & Link to article

36 Elucidating the Nature of the Excited State of a Heteroleptic Copper Photosensitizer Using Time-Resolved X-ray Absorption Spectroscopy
D. Moonshiram, P. Garrido-Barros, C. Gimbert-Suriñach, A. Picon, C. Liu, X. Zhang, M. Karnahl, A. Llobet

Chem. Eur. J., 2018, 24, 6464-6472.
Abstract & Link to article

35 Heteroleptic diimine–diphosphine Cu(I) complexes as an alternative towards noble-metal based photosensitizers: Design strategies, photophysical properties and perspective applications
Y. Zhang, M. Schulz, M. Wächtler, M. Karnahl, B. Dietzek

Coord. Chem. Rev., 2018, 356, 127-146.
Abstract & Link to article

34 Copper photosensitizers containing P^N ligands and their influence on photoactivity and stability
R. Giereth, W. Frey, H. Junge, S. Tschierlei, M. Karnahl

Chem. Eur. J., 2017, 23, 17432-17437.
Abstract & Link to article

33 Electronic and molecular structure relations in diiron compounds mimicking the [FeFe] hydrogenase active site studied by X-ray spectroscopy and quantum chemistry
R. Kositzki, S. Mebs, N. Schuth, N. Leidel, L. Schwartz, M. Karnahl, F. Wittkamp, D. Daunke, A. Grohmann, U.-P. Apfel, F. Gloaguen, S. Ott, M. Haumann

Dalton Trans., 2017, 46, 12544-12557.
Abstract & Link to article

32 Heteroleptic Copper Photosensitizers: Why an extended &pi-system does not automatically lead to an enhanced hydrogen production
M.Heberle, S. Tschierlei, N. Rockstroh, M. Ringenberg, W. Frey, H. Junge, M. Beller S. Lochbrunner, M. Karnahl

Chem. Eur. J., 2017, 2, 312-319.
Abstract & Link to article

31 Determination of side products in the photocatalytic generation of hydrogen with copper photosensitizers by resonance Raman spectroelectrochemistry
Y. Zhang, M.Heberle, M. Wächtler, M. Karnahl, B. Dietzek

RSC Adv., 2016, 6, 105801-105805.
Abstract & Link to article

30 Ultrafast Excited State Dynamics of Iridium(III) Complexes and their Changes upon Immobilisation onto Titanium Dioxide Layers
S. Tschierlei, A. Neubauer, N. Rockstroh, M. Karnahl, H. Junge, M. Beller, S. Lochbrunner

Phys. Chem. Chem. Phys., 2016, 18, 10682-10687.
Abstract & Link to article

29 Solar Hydrogen Production by Plasmonic Au-TiO2 Catalysts: Impact of Synthesis Protocol and TiO2 Phase on Charge Transfer Efficiency and H2 Evolution Rates
J. B Priebe, J. Radnik, A.J.J. Lennox, M.-M. Pohl, M. Karnahl, D. Hollmann, K. Grabow, U. Bentrup, H. Junge, M. Beller, A. Brückner

ACS Catalysis, 2015, 5, 2137-2148.
Abstract & Link to article

28 Design of multicomponent aerogels and their performance in photocatalytic hydrogen production
R. O. da Silva, F. J. Heiligtag, M. Karnahl, H. Junge, M. Niederberger, S. Wohlrab

Catalysis Today, 2015, 246, 101-107.
Abstract & Link to article

27 Copper-based water reduction catalysts for efficient light-driven hydrogen generation
H. Junge, Z. Codolà , A. Kammer, N. Rockstroh, M. Karnahl, S.-P. Luo, M.-M. Pohl, J. Radnik, S. Gatla, S. Wohlrab, J. Lloret, M. Costas, M. Beller

Journal of Molecular Catalysis A: Chemical, 2014, 395, 449-456.
Abstract & Link to article

26 Substitution-Controlled Excited State Processes in Heteroleptic Copper(I) Photosensitizers Used in Hydrogen Evolving Systems
S. Tschierlei, M. Karnahl, N. Rockstroh, H. Junge, M. Beller, S. Lochbrunner

ChemPhysChem, 2014, 15 (17), 3709-3713.
Abstract & Link to article

25 Death and Rebirth: Photocatalytic Hydrogen Production by a Self-Organizing Copper-Iron System
S. Fischer, D. Hollmann, S. Tschierlei, M. Karnahl, N. Rockstroh, E. Barsch, P. Schwarzbach, S.-P. Luo, H. Junge, M. Beller, S. Lochbrunner, R. Ludwig, A. Brückner

ACS Catal., 2014, 4, 1845-1849.
Abstract & Link to article

24 Structure-Activity Relationships in Bulk Polymeric and Sol-Gel-Derived Carbon Nitrides during Photocatalytic Hydrogen Production
D. Hollmann, M. Karnahl, S. Tschierlei, K. Kailasam, M. Schneider, J. Radnik, K. Grabow, U. Bentrup, H. Junge, M. Beller, S. Lochbrunner, A. Thomas, A. Brückner

Chem. Mater., 2014, 26, 1727-1733.
Abstract & Link to article

23 Coordination and conformational isomers in mononuclear iron complexes with pertinence to the [FeFe] hydrogenase active site
A. Orthaber, M. Karnahl, S. Tschierlei, D. Streich, M. Stein, S. Ott

Dalton Trans., 2014, 43, 4537-4549.
Abstract & Link to article

22 Photocatalytic Hydrogen Production with Copper Photosensitizer-Titanium Dioxide Composites
M. Karnahl, E. Mejía, N. Rockstroh, S. Tschierlei, S.-P. Luo, K. Grabow, A. Kruth, V. Brüser, H. Junge, S. Lochbrunner, M. Beller

ChemCatChem, 2014, 6, 82-86.
Abstract & Link to article

21 A Noble-Metal-Free System for Photocatalytic Hydrogen Production from Water
E. Mejía, S.-P. Luo, M. Karnahl, A. Friedrich, S. Tschierlei, A.-E. Surkus, H. Junge, S. Gladiali, S. Lochbrunner, M. Beller

Chem. Eur. J., 2013, 19, 15972-15978.
Abstract & Link to article

20 Water Reduction with Visible Light: Synergy between Optical Transitions and Electron Transfer in Au-TiO2 Catalysts Visualized by In-situ EPR Spectroscopy
J. B. Priebe, M. Karnahl, H. Junge, M. Beller, D. Hollmann, A. Brückner

Angew. Chem. Int. Ed., 2013, 52, 11420-11424.
Abstract & Link to article

19 Light-Driven Electron Transfer between a Photosensitizer and a Proton-Reducing Catalyst Co-adsorbed to NiO
J. M. Gardner, M. Beyler, M. Karnahl, S. Tschierlei, S. Ott, L. Hammarström

J. Am. Chem. Soc., 2012, 134, 19322-19325.
Abstract & Link to article

18 Mixed-valence [FeIFeII] hydrogenase active site model complexes stabilized by a bidentate carborane bis-phosphine ligand
M. Karnahl, S. Tschierlei, O. F. Erdem, S. Pullen, M.-P. Santoni, E. J. Reijerse, W. Lubitz, S. Ott

Dalton Trans., 2012, 41, 12468-12477.
Abstract & Link to article

17 Structural and spectroscopic characterization of tetranuclear iron complexes containing a bridge
M. Karnahl, A. Orthaber, S. Tschierlei, L. Nagarajan, S. Ott

J. Coord. Chem., 2012, 65, 2713-2723.
Abstract & Link to article

16 The role of the bridging ligand in photocatalytic supramolecular assemblies for the reduction of protons and carbon dioxide
M. Schulz, M. Karnahl, M. Schwalbe, J. G. Vos

Coord. Chem. Rev., 2012, 256, 1682-1705.
Abstract & Link to article

15 Synthesis and photophysics of a novel photocatalyst for hydrogen production based on a tetrapyridoacridine bridging ligand
M. Karnahl, C. Kuhnt, F. W. Heinemann, M. Schmitt, S. Rau, J. Popp, B. Dietzek

Chemical Physics, 2012, 393, 65-73.
Abstract & Link to article

14 Pentacoordinate iron complexes as functional models of the distal iron in [FeFe] hydrogenases
M. Beyler, S. Ezzaher, M. Karnahl, M.-P. Santoni, R. Lomoth, S. Ott

Chem. Commun., 2011, 47, 11662-11664.
Abstract & Link to article

13 The impact of bromine substitution on the photophysical properties of a homodinuclear Ru-tpphz-Ru complex
C. Kuhnt, M. Karnahl, S. Rau, M. Schmitt, B. Dietzek, J. Popp

Chemical Physics Letters, 2011, 516, 45-50.
Abstract & Link to article

12 Tuning of Photocatalytic Hydrogen Production and Photoinduced Intramolecular Electron Transfer Rates by Regioselective Bridging Ligand Substitution
M. Karnahl, C. Kuhnt, F. Ma, A. Yartsev, M. Schmitt, B. Dietzek, S. Rau, J. Popp

ChemPhysChem, 2011, 12, 2101-2109.
Abstract & Link to article

11 Excited-state annihilation in a homodinuclear ruthenium complex
C. Kuhnt, M. Karnahl, M. Schmitt, S. Rau, B. Dietzek, J. Popp

Chem. Commun., 2011, 47, 3820-3821.
Abstract & Link to article

10 Comparing the Reactivity of Benzenedithiolate- versus Alkyldithiolate-Bridged Fe2(CO)6 Complexes with Competing Ligands
D. Streich, M. Karnahl, Y. Astuti, C. W. Cady, L. Hammarström, R. Lomoth, S. Ott

Eur. J. Inorg. Chem., 2011, 2011, 1106-1111.
Abstract & Link to article

9 Photochemical Fate: The First Step Determines Efficiency of H2 Formation with a Supramolecular Photocatalyst
S. Tschierlei, M. Karnahl, M. Presselt, B. Dietzek, J. Guthmuller, L. González, M. Schmitt, S. Rau, J. Popp

Angew. Chem. Int. Ed., 2010, 49, 3981-3984.
Abstract & Link to article

8 The switch that wouldn't switch - unexpected luminescence from a ruthenium(II)-dppz-complex in water
M. Schwalbe, M. Karnahl, S. Tschierlei, U. Uhlemann, M. Schmitt, B. Dietzek, J. Popp, R. Groake, J. G. Vos, S. Rau

Dalton Trans., 2010, 39, 2768-2771.
Abstract & Link to article

7 Substitution-controlled ultrafast excited-state processes in Ru-dppz-derivatives
C. Kuhnt, M. Karnahl, S. Tschierlei, K. Griebenow, M. Schmitt, B. Schäfer, S. Krieck, H. Görls, S. Rau, B. Dietzek, J. Popp

Phys. Chem. Chem. Phys., 2010, 12, 1357-1368.
Abstract & Link to article

6 Synthesis and characterization of regioselective substituted tetrapyridophenazine ligands and their Ru(II) complexes
M. Karnahl, S. Tschierlei, C. Kuhnt, B. Dietzek, M. Schmitt, J. Popp, M. Schwalbe, S. Krieck, H. Görls, F. W. Heinemann, S. Rau

Dalton Trans., 2010, 39, 2359-2370.
Abstract & Link to article

5 Investigation of substitution effects on novel Ru-dppz complexes by Raman spectroscopy in combination with DFT methods
C. Kuhnt, S. Tschierlei, M. Karnahl, S. Rau, B. Dietzek, M. Schmitt, J. Popp

J. Raman Spectrosc., 2010, 41, 922-932.
Abstract & Link to article

4 Synthesis and Photophysical Properties of 3,8-Disubstituted 1,10-Phenanthrolines and Their Ruthenium(II) Complexes
M. Karnahl, S. Krieck, H. Görls, S. Tschierlei, M. Schmitt, J. Popp, D. Chartrand, G. S. Hanan, R. Groarke, J. G. Vos, S. Rau

Eur. J. Inorg. Chem., 2009, 2009, 4962-4971.
Abstract & Link to article

3 Photophysics of an Intramolecular Hydrogen-Evolving Ru-Pd Photocatalyst
S. Tschierlei, M. Presselt, C. Kuhnt, A. Yartsev, T. Pascher, V. Sundström, M. Karnahl, M. Schwalbe, B. Schäfer, S. Rau, M. Schmitt, B. Dietzek, J. Popp

Chem. Eur. J., 2009, 15, 7678-7688.
Abstract & Link to article

2 Ruthenium polypyridine complexes of tris-(2-pyridyl)-1,3,5-triazine-unusual building blocks for the synthesis of photochemical molecular devices
M. Schwalbe, M. Karnahl, H. Görls, D. Chartrand, F. Laverdiere, G. S. Hanan, S. Tschierlei, B. Dietzek, M. Schmitt, J. Popp, J. G. Vos, S. Rau

Dalton Trans., 2009, , 4012-4022.
Abstract & Link to article

1 Resonance Raman studies of photochemical molecular devices for multielectron storage
S. Tschierlei, B. Dietzek, M. Karnahl, S. Rau, F. M. MacDonnell, M. Schmitt, J. Popp

J. Raman Spectrosc., 2008, 39, 557-559.
Abstract & Link to article

Other Publications

02 Design of Heteroleptic Copper Photosensitizers and their Photophysical Properties with Respect to Light-driven Hydrogen Production
M. Karnahl

Bunsen-Magazin, 2015, 17, 232-238.

01 Localization Of The 1MLCT State Of Novel Ruthenium Polypyridine Complexes Via Resonance Raman Spectroscopy
M. Schmitt, S. Tschierlei, M. Karnahl, B. Dietzek, S. Rau, J. Popp

AIP Conference Proceedings, 2010, 1267, 881-882.

Last change: 30 Aug, 2023