Research focus

Cyclometallated Ni, Pd and Pt complexes with heavy ancillary ligands for enhanced triplet luminescence

Highly fluorinated aryl and alkyl Ni complexes

Methods
Quantum chemical calculations
Single crystal XRD
UV/Vis spectroscopy and spectroelectrochemistry
Cyclic voltammetry
NMR spectroscopy

Funding

PhD scholarship from Studienstiftung des deutschen Volkes e.V.

Publications

Synthesis and Photophysics of the Doubly Cyclometalated Pd(II) Complexes [Pd(C^∧N^∧C)(L)], L = PPh₃, AsPh₃, and SbPh₃. Jordan, R.*; Kler, S.; Maisuls, I.; Dietzek-Ivanšić, B.*; Strassert, C. A.*; Klein, A.* Inorg. Chem. 2025, 64, 6561–6574. DOI: 10.1021/acs.inorgchem.4c05436

Pyridine vs. Thiazole in Cyclometalated N^C^N Ni(II) Complexes. Kletsch, L.; Jordan, R.; Strippel, J.; Vicic, D. A.; Klein, A.* Inorganics 2025, 13, 41. DOI: 10.3390/inorganics13020041

Tuning the Terminal N* and C^ Moieties Toward Tailored Pt(II) Complexes with Thiazole-Based N*N^C Luminophores. Buss, S.; Geerkens, L.; Jordan, R.; Kletsch, L.; Hepp, A.; Kösters, J.; Klein, A.*; Strassert, C. A.*  Organometallics 2025, 44, 487-501. DOI: 10.1021/acs.organomet.4c00298

Assessing the Character of the C₆F₅ Ligand from the Electrochemical and Photophysical Properties of [Ni(C₆F₅)₂(N^N)] Complexes. Jordan, R.*; Schäfer, S. A.; Sander, N.; Maisuls, I.; Hamacher, C.; Friedel, J.; Strassert, C. A.*; Klein, A.* Inorg. Chem. 2024, 63, 11079-11091. DOI: 10.1021/acs.inorgchem.4c00649

Synthesis of Tris(trifluoromethyl)nickelates(II)—Coping with “The C₂F₅ Problem”. Schäfer, S. A.; Jordan, R.*; Klupsch, K. M.; Herwede, F. C.-H.; Klein, A.* Inorganics 2024, 12, 187. DOI: 10.3390/inorganics12070187

Luminescent Platinum(II) Complexes with a Tridentate Caffeine-Based NHC-Pincer Ligand: Synthesis, Electrochemistry and Photophysics. Bysewski, O.; Klosterhalfen, N.; Jordan, R.; Kletsch, L.; Winter, A.; Klein, A.; Dietzek-Ivanšić, B.; Schubert, U. S.* Eur. J. Inorg. Chem. 2024, 27, e202300620. DOI: 10.1002/ejic.202300620

Enhanced luminescence properties through heavy ancillary ligands in [Pt(C^N^C)(L)] complexes, L = AsPh₃ and SbPh₃. Jordan, R.; Maisuls, I.; Nair, S. S.; Dietzek-Ivanšić, B.*; Strassert, C. A.*; Klein, A.* Dalton Trans. 2023, 52, 18220-18232. DOI: 10.1039/D3DT03225F

Rhenium Tricarbonyl Complexes of Azodicarboxylate Ligands. Jordan, R.; Niazi, M.; Schäfer, S.; Kaim, W.; Klein, A.* Molecules 2022, 27, 8159. DOI: 10.3390/molecules27238159

Triplet Emitting C^N^C Cyclometalated Dibenzo[c,h]Acridine Pt(II) Complexes. Friedel, J. N.; Krause, M.; Jordan, R.; Maisuls, I.; Brünink, D.; Schwab, D.; Doltsinis, N. L.*; Strassert, C. A.*; Klein, A.* Molecules 2022, 27(22), 8054. DOI: 10.3390/molecules27228054

Photoluminescence of Ni(II), Pd(II), and Pt(II) complexes [M(Me₂dpb)Cl] obtained from C‒H activation of 1,5-di(2-pyridyl)-2,4-dimethylbenzene (Me₂dpbH). Kletsch, L.; Jordan, R.; Köcher, A.; Buss S.; Strassert, C. A.*; Klein, A.* Molecules 2021, 26, 5051. DOI: 10.3390/molecules26165051

Ni, Pd, and Pt complexes of a tetradentate dianionic thiosemicarbazone-based O^N^N^S ligand. Haseloer, A.; Denkler, L. M.; Jordan, R.; Reimer, M.; Olthof, S.; Schmidt, I.; Meerholz, K.; Hörner, G.*; Klein, A.* Dalton Trans. 2021, 50, 4311-4322. DOI: 10.1039/D1DT00272D

Master Thesis (June 2022)

Luminescent Ni, Pd and Pt C^N^C complexes with heavy phosphine analogues