David Schweinfurth


Postdoctoral fellow


HCI G-304


+41-44-633 4172


David Schweinfurth



Studies in chemistry at the Universität Stuttgart, Germany


BASF-Förderpreis for excellent studies in chemistry


Research Exchange with U. H. F. Bunz at the Georgia Institute of Technology, Atlanta, GA, USA


Diploma Thesis with W. Kaim and B. Sarkar at the Universität Stuttgart, Germany


Graduate Student with B. Sarkar at the Universität Stuttgart, Germany, and the Freie Universität Berlin, Germany, funded by a Chemiefonds scholarship


Artur-Fischer-Preis for excellent studies in chemistry


Research stay with J. Krzystek at the National High Magnetic Field Laboratory, Tallahassee, FL, USA, financed by a DAAD travel grant


Ph.D. in chemistry (Dr. rer. nat.) from the Freie Universität Berlin, Germany (summa cum laude)


Postdoctoral fellow with F. Diederich at the ETH Zürich, Switzerland, funded by the DAAD postdoc program

Switchable Helicenes

Helicenes have attracted the attention of chemists for decades, because of their fascinating shape and their interesting chiroptical properties. In the meanwhile, reliable synthetic routes for the generation of enantiopure helicenes have been established. This allows for the incorporation of helicenes into more sophisticated assemblies for switching applications. Compared to other polyaromatic compounds, the inherent chirality of helicenes adds another functionality, which can also be exploited for sensor devices.


42. Combining [Arene-Ru] with Azocarboxamide to generate Complexes with Cytotoxic Properties, M. G. Sommer, P. Kureljak, D. Urankar, D. Schweinfurth, N. Stojanović, M. Bubrin, M. Gazvoda, M. Osmak, B. Sarkar, J. Košmrlj, manuscript submitted.

41. Functional Metal Complexes Based on Bridging “Imino”-Quinonoid Ligands, B. Sarkar, D. Schweinfurth, N. Deibel, F. Weisser, manuscript submitted.

40. Helicene Quinones: Redox-Triggered Chiroptical Switching and Chiral Recognition of the Semiquinone Radical Anion Lithium Salt by Electron Nuclear Double Resonance Spectroscopy, D. Schweinfurth, M. Zalibera, M. Kathan, C. Shen, M. Mazzolini, N. Trapp, J. Crassous, G. Gescheidt, and F. Diederich, J. Am. Chem. Soc. 2014, DOI: 10.1021/ja5069323.

39. Three-way cooperativity in d8 metal complexes with ligands displaying chemical and redox non-innocence, N. Deibel, S. Hohloch, D. Schweinfurth, F. Weisser, A. Grupp, and B. Sarkar, Chem. Eur. J. 2014, DOI: 10.1002/chem.201403276.

38. Structure and Spectroelectrochemical Response of Arene-Ruthenium and Arene-Osmium Complexes with Potentially Hemilabile Noninnocent Ligands, M. Bubrin, D. Schweinfurth, F. Ehret, S. Záliš, H. Kvapilová, J. Fiedler, Q. Zeng, F. Hartl, and W. Kaim, Organometallics 2014, DOI: 10.1021/om5002815.

37. Dinuclear Quinonoid-Bridged d8 Metal Complexes with Redox-Active Azobenzene Stoppers: Electrochemical Properties and Electrochromic Behavior, N. Deibel, M. G. Sommer, S. Hohloch, J. Schwann, D. Schweinfurth, F. Ehret, and B. Sarkar, Organometallics 2014, DOI: 10.1021/om500035c.

36. Spin Crossover in Fe(II) and Co(II) Complexes with the Same Click-Derived Tripodal Ligand, D. Schweinfurth, S. Demeshko, S. Hohloch, M. Steinmetz, J. G. Brandenburg, S. Dechert, F. Meyer, S. Grimme, and B. Sarkar, Inorg. Chem. 2014, 53, 8203–8212.

35. Exploring the Noninnocent Character of Electron Rich π–Extended 8-Oxyquinolate Ligands in Ruthenium(II) Bipyridyl Complexes, S. Bellinger-Buckley, T.-C. Chang, S. Bag, D. Schweinfurth, W. Zhou, B. Torok, B. Sarkar, M.-K. Tsai, and J. Rochford, Inorg. Chem. 2014, 53, 5556–5567.

34. Tuning the Electronic Properties in Ruthenium-Quinone Complexes through Metal Coordination and Substitution at the Bridge, H. S. Das, D. Schweinfurth, J. Fiedler, M. M. Khusniyarov, S. M. Mobin, and B. Sarkar, Chem. Eur. J. 2014, 20, 43344346.

33. Redox-Induced Spin State Switching and Mixed Valency in Quinonoid-Bridged Dicobalt Complexes, D. Schweinfurth, Y. Reckhammer, S. Hohloch, N. Deibel, I. Peremykin, J. Fiedler, R. Marx, P. Neugebauer, J. van Slageren, and B. Sarkar, Chem. Eur. J. 2014, 20, 34753486.

32. Structural Chracterization, Solution Dynamics and Catalytic Properties of Palladium Complexes with Benzimidazolin-2-Ylidene Ligands, S. Hohloch, N. Deibel, D. Schweinfurth, W. Frey, and B. Sarkar, Eur. J. Inorg. Chem. 2014, 12, 21312139.

31. In-situ spectroelectrochemistry (EPR, UV-visible) and aggregation behavior of H2BDCP and Zn(II)BDCP [BDCP = {5,10,15,20-tetrakis[3,4-(1,4-dioxan)phenyl]porphyrin}2], W. Sinha, N. Deibel, A. Garai, D. Schweinfurth, S. Anwar, C. S. Purohit, B. Sarkar, and S. Kar, Dyes and Pigments 2014, 107, 29–37.

30. Synthesis, Spectral Characterization, Structures, and Oxidation State Distributions in [(corrolato)FeIII(NO)]n (n = 0, +1, 1) Complexes, W. Sinha, N. Deibel, H. Agarwala, A. Garai, D. Schweinfurth, C. S. Purohit, G. K. Lahiri, B. Sarkar, and S. Kar, Inorg. Chem. 2014, 53, 1417–1429.

29. Luminescent Dirhenium(I)-Double-Heterostranded Helicate and Mesocate, B. Shankar, S. Sahu, N. Deibel, D. Schweinfurth, B. Sarkar, P. Elumalai, D. Gupta, F. Hussain, G. Krishnamoorthy, and M. Sathiyendiran, Inorg. Chem. 2014, 53, 922–930.

28. Electrochemistry, Chemical Reactivity, and Time-Resolved Infrared Spectroscopy of Donor-Acceptor Systems [(Qy)Pt(papy)] (Q = Substituted o-Quinone or o-Iminoquinone; pap = Phenylazopyridine), N. Deibel, D. Schweinfurth, S. Hohloch, M. Delor, I. V. Sazanovich, M. Towrie, J. A. Weinstein, and B. Sarkar, Inorg. Chem. 2014, 53, 1021–1031.

27. Ruthenium Complexes of Tripodal Ligands with Pyridine and Triazole Arms: Subtle Tuning of Thermal, Electrochemical, and Photochemical Reactivity, F. Weisser, S. Hohloch, S. Plebst, D. Schweinfurth, and B. Sarkar, Chem. Eur. J. 2014, 20, 781–793.

26. The redox series [Ru(bpy)2(L)]n, n = +3, +2, +1, 0, with L = bipyridine, “click”derived pyridyl-trizaole or bis-triazole: a combined structural, electrochemical, spectroelectrochemical and DFT investigation, S. Hohloch, D. Schweinfurth, M. G. Sommer, F. Weisser, N. Deibel, F. Ehret, and B. Sarkar, Dalton Trans. 2014, 43, 4437–4450.

25. Electrochromic Platinum(II) Complexes Derived from Azobenzene and Zwitterionic Quinonoid Ligands: Electronic and Geometric Structures, N. Deibel, S. Hohloch, M. G. Sommer, D. Schweinfurth, F. Ehret, P. Braunstein, and B. Sarkar, Organometallics 2013, 32, 7366–7375.

24. Heterobimetallic Cu-dppf (dppf=1,1’-Bis(diphenylphosphino)ferrocene) Complexes with “Click” Derived Ligands: A Combined Structural, Electrochemical, Spectroelectrochemical, and Theoretical Study, D. Schweinfurth, N. Büttner, S. Hohloch, N. Deibel, J. Klein, and B. Sarkar, Organometallics 2013, 32, 5834–5842.

23. Tuning Spin-Spin Coupling in Quinonoid-Bridged Dicopper(II) Complexes through Rational Bridge Variation, D. Schweinfurth, M. M. Khusniyarov, D. Bubrin, S. Hohloch, C.-Y. Su, and B. Sarkar, Inorg. Chem. 2013, 52, 10332–10339.

22. Tuning Oxyquinolate Non-Innocence at the Ruthenium Polypyridyl Core, H. C. Zhao, B. L. Fu, D. Schweinfurth, J. P. Harney, B. Sarkar, M. K. Tsai, and J. Rochford, Eur. J. Inorg. Chem. 2013, 25, 4410–4420.

21. Eletronic Structures of Octahedral Ni(II) Complexes with “Click” Derived Triazole Ligands: A Combined Structural, Magnetometric, Spectroscopic, and Theoretical Study, D. Schweinfurth, J. Krzystek, I. Schapiro, S. Demeshko, J. Klein, J. Telser, A. Ozarowski, C.-Y. Su, F. Meyer, M. Atanasov, F. Neese, and B. Sarkar, Inorg. Chem. 2013, 52, 6880– 6892.

20. Substituent-Induced Reactivity in Quinonoid-Bridged Dinuclear Complexes: Comparison Between the Ruthenium and Osmium Systems, M. G. Sommer, D. Schweinfurth, F. Weisser, S. Hohloch, and B. Sarkar, Organometallics 2013, 32, 20692078.

19. Influencing the coordination mode of tbta (tbta = tris[(1-benzyl-1H-1,2,3-triazol-4-yl)methyl]amine) in dicobalt complexes through changes in metal oxidation states, D. Schweinfurth, J. Klein, S. Hohloch, S. Dechert, S. Demeshko, F. Meyer, and B. Sarkar, Dalton Trans. 2013, 42, 6944–6952.

18. Strong metal–metal coupling in mixed-valent intermediates [Cl(L)Ru(μ-tppz)Ru(L)Cl]+, L = β-diketonato ligands, tppz = 2,3,5,6-tetrakis(2-pyridyl)pyrazin, T. Kundu, D. Schweinfurth, B. Sarkar, T. K. Mondal, J. Fiedler, S. M. Mobin, V. G. Puranik, W. Kaim, and G. K. Lahiri, Dalton Trans. 2012, 41, 13429–13440.

17. Nickel complexes with “click”-derived pyridyl-triazole ligands: weak intermolecular interactions and catalytic ethylene oligomerisation, D. Schweinfurth, C.-Y. Su, S. C. Wie, P. Braunstein, and B. Sarkar, Dalton Trans. 2012, 41, 12984–12990.

16. Capped-Tetrahedrally Coordinated Fe(II) and Co(II) Complexes Using a “Click”-Derived Tripodal Ligand: Geometric and Electronic Structures, D. Schweinfurth, S. Demeshko, M. M. Khusniyarov, S. Dechert, V. Gurram, M. R. Buchmeiser, F. Meyer, and B. Sarkar, Inorg. Chem. 2012, 51, 7592–7597.

15. Filling Gaps in the Series of Noninnocent Hetero-1,3-diene Chelate Ligands: Ruthenium Complexes of Redox-Active α-Azocarbonyl and α-Azothiocarbonyl Ligands RNNC(R′)E, E = O or S, F. Ehret, M. Bubrin, R. Hübner, D. Schweinfurth, I. Hartenbach, S. Záliš, and W. Kaim, Inorg. Chem. 2012, 51, 6237–6244.

14. Paramagnetic Palladacycles with PdIII Centers Are Highly Active Catalysts for Asymmetric Aza-Claisen Rearrangements, S. H. Eitel, M. Bauer, D. Schweinfurth, N. Deibel, B. Sarkar, H. Kelm, H.-J. Krüger, W. Frey, and R. Peters, J. Am. Chem. Soc. 2012, 134, 4683–4693.

13. Donor–acceptor systems of Pt(II) and redox-induced reactivity towards small molecules, N. Deibel, D. Schweinfurth, S. Hohloch, J. Fiedler, and B. Sarkar, Chem. Commun. 2012, 48, 2388–2390.

12. Characterization of [Pd(pap)(NHC)I2]n (n = +1, 0, -1; pap = phenylazopyridine; NHC = N-heterocyclic carbene): Unusual coordination mode of pap and non-innocent behavior of NHC, N. Deibel, D. Schweinfurth, S. Hohloch, and B. Sarkar, Inorg. Chim. Acta 2012, 380, 269–273.

11. Isomeric separation in donor–acceptor systems of Pd(II) and Pt(II) and a combined structural, electrochemical and spectroelectrochemical study, N. Deibel, D. Schweinfurth, J. Fiedler, S. Zalis, and B. Sarkar, Dalton Trans. 2011, 40, 9925–9934.

10. Valence and spin situations in isomeric [(bpy)Ru(Q’)2]n (Q’ = 3,5-di-tert-butyl-N-aryl-1,2-benzoquinonemonoimine). An experimental and DFT analysis, D. Das, T. K. Mondal, A. D. Chowdhury, F. Weißer, D. Schweinfurth, B. Sarkar, S. M. Mobin. F. A. Urbanos, R. Jiménez-Aparicio, and G. K. Lahiri, Dalton Trans. 2011, 40, 8377–8390.

9. Cobalt Complexes with “Click”-Derived Functional Tripodal Ligands: Spin Crossover and Coordination Ambivalence, D. Schweinfurth, F. Weisser, D. Bubrin, L. Bogani, and B. Sarkar, Inorg. Chem. 2011, 50, 6114–6121.

8. Sensing external spins with nitrogen-vacancy diamond, B. Grotz, J. Beck, P. Neumann, B. Naydenov, R. Reuter, F. Reinhard, F. Jelezko, J. Wrachtrup, D. Schweinfurth, B. Sarkar, and P. Hemmer, New Journal of Physics 2011, 13, 055004.

7. Energy-Level Tailoring in a Series of Redox-Rich Quinonoid-Bridged Diruthenium Complexes Containing Tris(2-pyridylmethyl)amine as a Co-Ligand, F. Weisser, R. Hübner, D. Schweinfurth, and B. Sarkar, Chem. – Eur. J. 2011, 17, 5727–5736.

6. Expanding the scope of ‘Click’ derived 1,2,3-triazole ligands: New palladium and platinum complexes, D. Schweinfurth, S. Strobel, and B. Sarkar, Inorg. Chim. Acta 2011, 374, 253–260.

5. One-Pot Synthesis of Symmetric and Asymmetric p-Quinone Ligands and Unprecedented Substituent Induced Reactivity in Their Dinuclear Ruthenium Complexes, D. Schweinfurth, H. S. Das, F. Weisser, D. Bubrin, and B. Sarkar, Inorg. Chem. 2011, 50, 1150–1159.

4. ‘Double redox-activity’ in azobenzene-quinonoid palladium(II) complexes: a combined structural, electrochemical und spectroscopic study, N. Deibel, D. Schweinfurth, R. Hübner, P. Braunstein, and B. Sarkar, Dalton. Trans. 2011, 40, 431–436.

3. Straightforward Synthesis of Substituted p-Quinones: Isolation of a Key Intermediate and Use as a Bridging Ligand in a Diruthenium Complex, H. S. Das, F. Weisser, D. Schweinfurth, C. – Y. Su, L. Bogani, J. Fiedler, and B. Sarkar, Chem. – Eur. J. 2010, 16, 2977–2981.

2. New 1,2,3-triazole ligands through click reactions and their palladium and platinum complexes, D. Schweinfurth, R. Pattacini, S. Strobel, and B. Sarkar, Dalton Trans. 2009, 929 –9297.

1. 1,3-Dipolar cycloaddition of alkynes to azides. Construction of operationally functional metal responsive fluorophores, D. Schweinfurth, K. I. Hardcastle, and U. H. F. Bunz, Chem. Commun. 2008, 2203–2205.

Non-Peer-Review Articles

D. Schweinfurth, N. Deibel, F. Weisser, B. Sarkar, Nachr. d. Chem., 2011, 937–941. Towards New Ligands with a Click.

D. Schweinfurth, F. Weisser, B. Sarkar, Nachr. d. Chem., 2009, 862–866. Not pure: Chinonoid Ligands.

Last update: Oct 2014