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  1. Quintes, T.; Weber, S.; Richert, S.* Teacups, a python package for the simulation of time-resolved EPR spectra of spin-polarized multi-spin systems. J. Phys. Chem. A 2025, 129, 3375-3388. (corresponding author)
  2. Khariushin, I. V.;† Thielert, P.;† Zöllner, E.; Mayländer, M.; Quintes, T.; Richert, S.;* Vargas Jentzsch, A.* Supramolecular dyads as photogenerated qubit candidates. Nat. Chem. 2025, 17, 493-499. (corresponding author) read-only access
  3. Quintes, T.; Franz, M.; Thielert, P.; Redman, A. J.; Richert, S.* Determination of exchange coupling constants in the electronic ground and excited states of molecular multi-spin systems. Chem. Phys. Rev. 2024, 5, 041312. (corresponding author)
  4. Euringer, L.; Holzapfel, M.; Krummenacher, I.; Franz, M.; Richert, S.; Braunschweig, H.; Lambert, C.* Tuning electron transfer coupling and exchange interaction in bis-triarylamine radical cations and dications by bridge electron density. J. Am. Chem. Soc. 2024, 146, 27679-27689.
  5. Franz, M.; Neese, F.;* Richert, S.* Elucidation of the exchange interaction in photoexcited three-spin systems – a second-order perturbational approach. Phys. Chem. Chem. Phys. 2024, 26, 25005-25020. (corresponding author)
  6. Bruyers, D. K. F.; Richert, S.* Design of an electrochemical cell for continuous wave EPR measurements of radical ions. Chem. Eur. J. 2024, 30, e202402719. (corresponding author)
  7. Arnold, M. E.; Roß, L.; Thielert, P.; Bartley, F.; Zolg, J.; Bartsch, F.; Kibler, L. A.; Richert, S.; Bannwarth, C.;* Kuehne, A. J. C.* On the effect of donor strength on the photoluminescence performance in mono-substituted N-donor triarylmethyl radicals. Adv. Opt. Mater. 2024, 12, 2400697.
  8. Mayländer, M.; Khariushin, I. V.; Vargas Jentzsch, A.;* Richert, S.* Correlation between radical and quartet state coherence times in photogenerated triplet–radical conjugates. J. Phys. Chem. Lett. 2024, 15, 5935-5938. (corresponding author)
  9. Thielert, P.;† El Bitar Nehme, M.;† Mayländer, M.; Franz, M.; Zimmermann, S. L.; Fisch, F.; Gilch, P.; Vargas Jentzsch, A.; Rickhaus, M.;* Richert, S.* Influence of the substitution position on spin communication in photoexcited perylene-nitroxide dyads. Chem. Sci. 2024, 15, 7515-7523. (corresponding author)
  10. Rall, J. M.; Nork, L.; Engesser, T. A.;* Mayländer, M.; Weber, S.; Richert, S.;* Krossing, I.* From the iron pentacarbonyl cation to heteroleptic η6-arene carbonyls and bis-η6-arene cations. Chem. Eur. J. 2024, 30, e202400105. (corresponding author)
  11. Bernhardt, A.; Čavlović, D.; Mayländer, M.; Blacque, O.; Cruz, C. M.;* Richert, S.;* Juríček, M.* π-Radical cascade to a chiral saddle-shaped peropyrene. Angew. Chem. Int. Ed. 2024, 63, e202318254. (corresponding author)
  12. Kopp, K.; Westhofen, L.; Hett, T.; Schwering-Sohnrey, M. F.; Mayländer, M.; Richert, S.; Schiemann, O.* Synthesis and dark state EPR properties of PDI–trityl dyads and triads. Chem. Eur. J. 2023, 30, e202303635.
  13. Mayländer, M.; Kopp, K.; Nolden, O.; Franz, M.; Thielert, P.; Vargas Jentzsch, A.; Gilch, P.; Schiemann, O.; Richert, S.* PDI–trityl dyads as photogenerated molecular spin qubit candidates. Chem. Sci. 2023, 14, 10727-10735. (corresponding author)
  14. Moise, G.; Redman, A. J.; Richert, S.; Myers, W. K.; Bulut, I.; Bolls, P. S.; Rickhaus, M.; Sun, J.; Anderson, H. L.;* Timmel, C. R.* The impact of spin–orbit coupling on fine-structure and spin polarisation in photoexcited porphyrin triplet states. J. Magn. Reson. 2023, 355, 107546.
  15. Sellin, M.; Seiler, M.; Mayländer, M.; Kloiber, K.; Radtke, V.; Weber, S.; Richert, S.; Krossing, I.* Isolation, structural and physical characterization as well as reactivity of stable acenium radical cation salts. Chem. Eur. J. 2023, 29, e202300909.
  16. Mayländer, M.;† Thielert, P.;† Quintes, T; Vargas Jentzsch, A.;* Richert, S.* Room temperature electron spin coherence in photogenerated molecular spin qubit candidates. J. Am. Chem. Soc. 2023, 145, 14064-14069. (corresponding author)
  17. Schmitt, M.; Mayländer, M.; Radtke, V.; Heizmann, T.; Richert, S.; Krossing, I.* [Ni(CO)4]+ as NiI synthon: synthesis and characterization of NiI half-sandwich and sandwich cations. Chem. Eur. J. 2023, 29, e202301419.
  18. Mayländer, M.; Quintes, T.; Franz, M; Allonas, X.; Vargas Jentzsch, A.;* Richert, S.* Distance dependence of enhanced intersystem crossing in BODIPY–nitroxide dyads. Chem. Sci. 2023, 14, 5361-5368. (corresponding author)
  19. Quintes, T.; Mayländer, M.; Richert, S.* Properties and applications of photoexcited chromophore-radical systems. Nat. Rev. Chem. 2023, 7, 75-90. (corresponding author) read-only access
  20. Abdullin, D.; Hett, T.; Fleck, N.; Kopp, K.; Cassidy, S.; Richert, S.; Schiemann, O.* Magneto-structural correlations in a mixed porphyrin(Cu2+)/trityl spin system: magnitude, sign and distribution of the exchange coupling constant. Chem. Eur. J. 2023, 29, e202203148.
  21. Schmitt, M.; Mayländer, M.; Heizmann, T.; Richert, S.; Bülow, C.; Hirsch, K.; Zamudio-Bayer, V.; Lau, J. T.; Krossing, I.* Isolation and characterization of the homoleptic Ni(I) and Ni(II) bis-benzene sandwich cations. Angew. Chem. Int. Ed. 2022, 61, e202211555.
  22. Franz, M.; Neese, F.; Richert, S.* Calculation of exchange couplings in the electronically excited state of molecular three-spin systems. Chem. Sci. 2022, 13, 12358-12366. (corresponding author)
  23. Sellin, M.; Friedmann, C.; Mayländer, M.; Richert, S.; Krossing, I.* Towards clustered carbonyl cations [M3(CO)14]2+ (M = Ru, Os): The need for innocent deelectronation. Chem. Sci. 2022, 13, 9147-9158.
  24. Rall, J. M.; Schorpp, M.; Keilwerth, M.; Mayländer, M.; Friedmann, C.; Daub, M.; Richert, S.; Meyer, K.; Krossing, I.* Synthesis and characterization of a stable iron pentacarbonyl radical cation salt. Angew. Chem. Int. Ed. 2022, 61, e202204080.
  25. Mayländer, M.; Nolden, O.; Franz, M.; Chen, S.; Bancroft, L.; Qiu, Y.; Wasielewski, M. R.; Gilch, P.; Richert, S.* Accessing the triplet state of perylenediimide by radical-enhanced intersystem crossing. Chem. Sci. 2022, 13, 6732-6743. (corresponding author)
  26. Valenta, L.; Mayländer, M.; Kappeler, P.; Blacque, O.; Šolomek, T.;* Richert, S.;* Juríček, M.* Trimesityltriangulene: A persistent derivative of Clar's hydrocarbon. Chem. Commun. 2022, 58, 3019-3022. (corresponding author)
  27. Xu, J.; Jarocha, L. E.; Zollitsch, T.; Konowalczyk, M.; Henbest, K. B.; Richert, S.; [...] Solov'yov, I. A.;* Xie, C.;* Mackenzie, S. R.;* Timmel, C. R.;* Mouritsen, H.;* Hore, P. J.* Magnetic sensitivity of cryptochrome 4 from a migratory songbird. Nature 2021, 594, 535-540.
  28. Redman, A. J.; Moise, G.; Richert, S.; Viere, E. J.; Myers, W. K.; Therien, M. J.; Timmel, C.R.* EPR of photoexcited triplet-state acceptor porphyrins. J. Phys. Chem. C 2021, 125, 11782-11790.
  29. Mayländer, M.; Chen, S.; Lorenzo, E. R.; Wasielewski, M. R.;* Richert, S.* Exploring photogenerated molecular quartet states as spin qubits and qudits. J. Am. Chem. Soc. 2021, 143, 7050-7058. (corresponding author)
  30. Schmitt, M.; Mayländer, M.; Goost, J.; Richert, S.; Krossing, I.* Chasing the Mond cation: Synthesis and characterization of the homoleptic nickel tetracarbonyl cation and its tricarbonyl-nitrosyl analogue. Angew. Chem. Int. Ed. 2021, 60, 14800-14805.
  31. Hermann, M.; Böttcher, T.; Schorpp, M.; Richert, S.; Wassy, D.; Krossing, I.; Esser, B.* Cations and anions of dibenzo[a,e]pentalene and reduction of a dibenzo[a,e]pentalenophane. Chem. Eur. J. 2021, 27, 4964-4970.
  32. Nolden, O.; Fleck, N.; Lorenzo, E. R.; Wasielewski, M. R.; Schiemann, O.; Gilch, P.; Richert, S.* Excitation energy transfer and exchange-mediated quartet state formation in porphyrin-trityl systems. Chem. Eur. J. 2021, 27, 2683-2691. (corresponding author)
  33. Ma, J.; Ripp, A.; Wassy, D.; Dürr, T.; Qui, D.; Häner, M.; Haas, T.; Popp, C.; Bezold, D.; Richert, S.; Esser, B.; Jessen, H. J.* Thiocoumarin caged nucleotides: synthetic access and their photophysical properties. Molecules 2020, 25, 5325.
  34. Avalos, C. E.; Richert, S.; Socie, E.; Karthikeyan, G.; Casano, G.; Stevanato, G.; Kubicki, D. J.; Moser, J.-E.; Timmel, C. R.; Lelli, M.; Rossini, A. J.; Ouari, O.;* Emsley, L.* Enhanced intersystem crossing and transient electron spin polarization in a photoexcited pentacene-trityl radical. J. Phys. Chem. A 2020, 124, 6068-6075.
  35. Richert, S.;* Chen, J.; Pompe, N.; Radtke, V.; Illarionov, B.; Fischer, M.; Bacher, A.; Weber, S.* Influence of the cofactor structure on the photophysical processes initiating signal transduction in a phototropin-derived LOV domain. J. Chem. Phys. 2019, 151, 235102. (corresponding author)
  36. Wili, N.; Richert, S.; Limburg, B.; Clarke, S. J.; Anderson, H. L.; Timmel, C. R.; Jeschke, G.* ELDOR-detected NMR beyond hyperfine couplings: A case study with Cu(II)-porphyrin dimers. Phys. Chem. Chem. Phys. 2019, 21, 11676–11688.
  37. Kerpal, C.;† Richert, S.;† Storey, J. G.; Pillai, S.; Liddell, P. A.; Gust, D.; Mackenzie, S. R.; Hore, P. J.; Timmel, C. R.* Chemical compass behaviour at microtesla magnetic fields strengthens the radical pair hypothesis of avian magnetoreception. Nat. Commun. 2019, 10, 3707. (shared first authorship)
  38. Dal Farra, M. G.; Richert, S.; Martin, C.; Larminie, C.; Gobbo, M.; Bergantino, E.; Timmel, C. R.; Bowen, A. M.;* Di Valentin, M.* Light-induced pulsed EPR dipolar spectroscopy on a paradigmatic hemeprotein. ChemPhysChem 2019, 20, 931–935.
  39. Fleck, N.; Hett, T.; Brode, J.; Meyer, A.; Richert, S.; Schiemann, O.* C-C cross coupling reactions of trityl radicals: spin density delocalization, exchange coupling and a spin label. J. Org. Chem. 2019, 84, 3293–3303.
  40. Schröder, J.; Himmel, D.; Kratzert, D.; Radtke, V.; Richert, S.; Weber, S.; Böttcher, T.* Isolation of a stable pyridine radical anion. Chem. Commun. 2019, 55, 1322–1325.
  41. Richert, S.;* Anderson, H. L.; Peeks, M. D.; Timmel, C. R.* Probing the orientation of porphyrin oligomers in a liquid crystal solvent – a triplet state electron paramagnetic resonance study. Mol. Phys. 2019, 117, 2700–2708. (corresponding author)
  42. Lewis, A. M.; Fay, T. P.; Manolopoulos, D. E.;* Kerpal, C.; Richert, S.; Timmel, C. R.* On the low magnetic field effect in radical pair reactions. J. Chem. Phys. 2018, 149, 034103.
  43. Nançoz, C.; Licari, G.; Beckwith, J. S.; Soederberg, M.; Dereka, B.; Rosspeintner, A.; Yushchenko, O.; Letrun, R.; Richert, S.; Lang, B.; Vauthey, E.* Influence of the hydrogen-bond interactions on the excited-state dynamics of a push-pull azobenzene dye: the case of methyl orange. Phys. Chem. Chem. Phys. 2018, 20, 7254–7264.
  44. Richert, S.;* Limburg, B.; Anderson, H. L.; Timmel, C. R.* On the influence of the bridge on triplet state delocalization in linear porphyrin oligomers. J. Am. Chem. Soc. 2017, 139, 12003–12008. (corresponding author)
  45. Richert, S.;* Kuprov, I.; Peeks, M. D.; Suturina, E. A.; Cremers, J.; Anderson, H. L.; Timmel, C. R.* Quantifying the exchange coupling in linear copper porphyrin oligomers. Phys. Chem. Chem. Phys. 2017, 19, 16057–16061. (corresponding author)
  46. Richert, S.; Bullard, G.; Rawson, J.; Angiolillo, P. J.; Therien, M. J.;* Timmel, C. R.* On the importance of electronic symmetry for triplet state delocalization. J. Am. Chem. Soc. 2017, 139, 5301–5304.
  47. Richert, S.;* Tait, C. E.;* Timmel, C. R.* Delocalisation of photoexcited triplet states probed by transient EPR and hyperfine spectroscopy. J. Magn. Reson. 2017, 280, 103–116. (corresponding author)
  48. Richert, S.;† Cremers, J.;† Kuprov, I.; Peeks, M. D.; Anderson, H. L.;* Timmel, C. R.* Constructive quantum interference in a bis-copper six-porphyrin nanoring. Nat. Commun. 2017, 8, 14842.
  49. Richert, S.; Peeks, M. D.; Tait, C. E.; Anderson, H. L.;* Timmel, C. R.* Photogenerated triplet states in supramolecular porphyrin ladder assemblies: An EPR study. Phys. Chem. Chem. Phys. 2016, 18, 24171–24175.
  50. Cremers, J.; Richert, S.; Kondratuk, D. V.; Claridge, T. D. W.; Timmel, C. R.; Anderson, H. L.* Nanorings with copper(II) and zinc(II) centers: Forcing copper porphyrins to bind axial ligands in heterometallated oligomers. Chem. Sci. 2016, 7, 6961–6968.
  51. Richert, S.; Cremers, J.; Anderson, H. L.; Timmel, C. R.* Exploring template-bound dinuclear copper porphyrin nanorings by EPR spectroscopy. Chem. Sci. 2016, 7, 6952–6960.
  52. Richert, S.; Mosquera Vázquez, S.; Grzybowski, M.; Gryko, D. T.; Kyrychenko, A.; Vauthey, E.* Excited-state dynamics of an environment-sensitive push-pull diketopyrrolopyrrole: Major differences between the bulk solution phase and the dodecane/water interface. J. Phys. Chem. B 2014, 118, 9952–9963.
  53. Richert, S.; Rosspeintner, A.; Landgraf, S.; Grampp, G.; Vauthey, E.; Kattnig, D. R.* Time-resolved magnetic field effects distinguish loose ion pairs from exciplexes. J. Am. Chem. Soc. 2013, 135, 15144–15152.
  54. Colvin, M. T.; Carmieli, R.; Miura, T.; Richert, S.; Gardner, D. M.; Smeigh, A. L.; Dyar, S. M.; Conron, S. M.; Ratner, M. A.; Wasielewski, M. R.* Electron spin polarization transfer from photogenerated spin-correlated radical pairs to a stable radical observer spin. J. Phys. Chem. A 2013, 117, 5314–5325.
  55. Fedoseeva, M.; Richert, S.; Vauthey, E.* Excited-state dynamics of organic dyes at liquid/liquid interfaces. Langmuir 2012, 28, 11291–11301.
  56. Richert, S.; Fedoseeva, M.; Vauthey, E.* Ultrafast photoinduced dynamics at air/liquid and liquid/liquid interfaces. J. Phys. Chem. Lett. 2012, 3, 1635–1642.
  57. Moran, A. C.; Lebedeva, N. V.; Richert, S.; Forbes, M. D. E.* Spin trapping studies of amine-stabilized trialkylborane free radical initiator systems: Kinetics and mechanism. Appl. Magn. Reson. 2011, 41, 295–303.
  58. Fedoseeva, M.; Grilj, J.; Kel, O.; Koch, M.; Letrun, R.; Markovic, V.; Petkova, I.; Richert, S.; Rosspeintner, A.; Sherin, P. S.; Villamaina, D.; Lang, B.; Vauthey, E.* Photoinduced electron transfer reactions: From the elucidation of old problems in bulk solutions towards the exploration of interfaces. Chimia 2011, 65, 350–352.
  59. Jahjah, R.; Gassama, A.; Dumur, F.; Marinkovic, S.; Richert, S.; Landgraf, S.; Lebrun, A.; Cadiou, C.; Sèlles, P.; Hoffmann, N.* Photochemical electron transfer mediated addition of naphthylamine derivatives to electron-deficient alkenes. J. Org. Chem. 2011, 76, 7104–7118.