47. Spring-Like Behavior in [8]Helicene Diimides: How Helical Pitch Governs Optical Anisotropy and Electronic Conjugation
Saal, F.; Brancaccio, V.; Radacki, K.; Braunschweig, H.; Ravat, P.*
Angew. Chem. Int. Ed. 2025.
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46. Synthesis and Chiroptical Properties of Biscarbazole-Embedded Diaza[7]helicenes
Upadhyay, G. M.; Swain, A.; Bhalodi, E. H.; Ravat, P.*; Bedekar, A. V.*
J. Org. Chem. 2025.
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45. Ultra-Narrowband Circularly Polarized Luminescence from Multiple 1,4-Azaborine-Embedded Helical Nanographenes
Zhang, F.; Brancaccio, V.; Saal, F.; Deori, U.; Radacki, K.; Braunschweig, H.; Rajamalli, P.; Ravat, P.*
J. Am. Chem. Soc. 2024.
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44. Helically twisted nanoribbons via stereospecific annulative π-extension reaction employing [7]helicene as a molecular wrench
Swain, A.; Radacki, K.; Braunschweig, H.; Ravat, P.*
Chem. Sci. 2024.
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43. Bis-[cyclic (alkyl)(amino)carbene]s derived diradicals
Nayak, M. K.; Elvers, B. J.; Mehta, S.; Krummenacher, I.; Mondal, A.*; Braunschweig, H.*; Schulzke, C.*; Ravat, P.*; Jana, A.*
Chem. Commun. 2024.
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42. Aza[7]helicene Functionalized Triphenylmethyl Radicals with Circularly Polarized Doublet Emission
Gross, M.; Zhang, F.; Arnold, M. E.; Ravat, P.*; Kuehne, A. J. C.*
Adv. Optical Mater. 2024.
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41. Push–pull [7]helicene diimide: excited-state charge transfer and solvatochromic circularly polarised luminescence
Saal, F.; Swain, A.; Schmiedel, A.; Holzapfel, M.; Lambert, C.; Ravat, P.*
Chem. Commun. 2023.
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40. Bis-Olefin Based Crystalline Schlenk Hydrocarbon Diradicals with a Triplet Ground State
Saha, P.; Chrysochos, N.; Elvers, B. J.; Pätsch, S.; Uddin, S. I.; Krummenacher, I.; Nandeshwar, M.; Mishra, A.; Raman, K. V.; Rajaraman, G.*; Prabusankar, G.*; Braunschweig, H.*; Ravat, P. *; Schulzke, C.*; Jana, A.*
Angew. Chem. Int. Ed., 2023, e202311868.
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39. Introducing an orthogonally polarized electron-rich alkene: synthesis of a zwitterionic boron-containing π-conjugated system
Chrysochos, N.; Pätsch, S.; Elvers, B. J.; Krummenacher, I.; Muneshwar, N.; Ganesan, P.*; Braunschweig, H.*; Schulzke, C.*; Ravat, P.*; Jana, A.*
Chem. Commun. 2023.
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38. Spring-Like Behavior in [8]Helicene Diimides: How Helical Pitch Governs Optical Anisotropy and Electronic Conjugation (copy 6)
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Swain, A.; Ravat, P.*
Org. Chem. Front., 2023.
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37. Dimethylnonacethrene – en route to a magnetic switch
Čavlović, D.; Blacque, O.; Krummenacher, I.; Braunschweig, H.; Ravat, P.*; Juríček, M.*
Chem. Commun., 2023.
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36. Efficient Narrowband Circularly Polarized Light Emitters Based on 1,4-B,N-embedded Rigid Donor–Acceptor Helicenes
Zhang, F.; Rauch, F.; Swain A.; Marder T.; Ravat, P.*
Angew. Chem. Int. Ed., 2023.
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35. A bis-NHC-CAAC dimer derived dicationic diradical
Nayak, M. K.; Sarkar, P.; Elvers, B. J.; Mehta, S.; Zhang, F. M.; Chrysochos, N. D.; Krummenacher, I.; Vijayakanth, T.; Narayanan, R. S.; Dolai, R.; Roy, B. M.; Malik, V. M.; Rawat, H.; Mondal, A.*; Boomishankar, R.*; Pati, S. K.*; Braunschweig, H.*; Schulzke, C.*; Ravat, P.*; Jana, A.*
Chem. Sci. 2022. Highlight in ChemistryViews.
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34. Nonacethrene Unchained: A Cascade to Chiral Contorted Conjugated Hydrocarbon with Two sp3-Defects
Čavlović D.; Häussinger D.; Blacque O.; ; Ravat, P.*; Juríček M.*
JACS Au, 2022, 2, 1616–1626. ACS Editors’ Choice
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33. Pyrene-Fused [7]Helicenes Connected via Hexagonal and Heptagonal Rings: Stereospecific Synthesis and Chiroptical Properties
Swain, A.; Radacki, K.; Holger Braunschweig, H.; Ravat, P.*
J. Org. Chem. 2022, 87, 993–1000.
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32. De Novo Synthesis of Free-Standing Flexible 2D Intercalated Nanofilm Uniform over Tens of cm2
Ravat, P.; Uchida, H.; Sekine, R.; Kamei, K.; Yamamoto, A.; Konovalov, O.; Tanaka, M.; Yamada, T.; Harano, K.; Nakamura, E.
Adv. Mater. 2022, 2106465. Special Issue: Organic Semiconductors
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31. Diamidocarbene-Based Thiele and Tschitschibabin Hydrocarbons: Carbonyl Functionalized Kekulé Diradicaloids
Maiti, A.; Sobottka, S.; Chandra, S.; Jana, D.; Ravat, P.*; Sarkar, B.*; Jana, A.*
J. Org. Chem. 2021, 86, 16464–16472.
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30. Zinc-[7]helicenocyanine and Its Discrete π-Stacked Homochiral Dimer
Zhang, F.; Radacki, K.; Braunschweig, H.; Lambert, C.; Ravat, P.*
Angew. Chem. Int. Ed. 2021, 60, 23656–23660.
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29. Imide-Functionalized Helical PAHs: A Step towards New Chiral Functional Materials
Saal, F.; Ravat, P.*
SynLett, 2021, 32, 1879–1890.
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28. Anionic Boron- and Carbon-Based Hetero-Diradicaloids Spanned by a p-Phenylene Bridge
Maiti, A.; Zhang, F.; Krummenacher, I.; Bhattacharyya, M.; Mehta, S.; Moos, M.; Lambert, C.; Engels, B.*; Mondal, A.*; Braunschweig, H.*; Ravat, P.*; Jana, A.*
J. Am. Chem. Soc. 2021, 143, 10, 3687–3692.
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27. Nano- and Microspheres Containing Inorganic and Biological Nanoparticles: Self-Assembly and Electron Tomographic Analysis
Sekine, R.; Ravat, P.; Yanagisawa, H.; Liu, C.; Kikkawa, M.; Harano, K.; Nakamura, E.
J. Am. Chem. Soc. 2021, 143, 2822–2828.
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26. C2- and C1-Symmetric Configurationally Stable Pyrene-Fused [5]Helicenes Connected via Hexagonal and Heptagonal Rings
Swain, A.; Kolanji, K.; Christoph, S.; Ravat, P.*
Org. Lett. 2021, 23, 1339–1343.
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25. Carbo[n]helicenes Restricted to Enantiomerize: An Insight into the Design Process of Configurationally Stable Functional Chiral PAHs
Ravat, P.*
Chem. Eur. J. 2021, 27, 3957–3967.
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24. [n]Helicene Diimides (n = 5, 6, and 7): Through-Bond versus Through-Space Conjugation
M.Saal, F.; Zhang, F.; Holzapfel, M.; Stolte, M.; Michail, E.; Moos, M.; Schmiedel, A.; Krause, A.-M.; Lambert, C.; Würthner, F.; Ravat, P.*
J. Am. Chem. Soc., 2020, 142, 21298–21303.
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23. Benzo[cd]triangulene: A Spin 1/2 Graphene Fragment
Ravat, P.*; Blacque, O.; Juríček, M.*
J. Org. Chem. 2020, 85, 92–100.
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22. Stereospecific Synthesis and Photophysical Properties of Propeller-Shaped C90H48 PAH
Zhang, F.; Michail, E.; Saal, F.; Krause, A.-M.; Ravat, P.*
Chem. Eur. J. 2019, 25, 16241–16245 .
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21. Forbidden Electrocyclizations of Diradicaloids
Šolomek, T.; Ravat, P.; Juríček, M.
Trends in Chemistry 2019, 7, 705-706.
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20. Helicenes as Chiroptical Photoswitches
Ravat, P.; Šolomek, T.; Juríček, M.
ChemPhotoChem 2019, 3, 180-186.
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19. Dimethylcethrene: A Chiroptical Diradicaloid Photoswitch
Ravat, P.; Šolomek, T.; Häussinger, D.; Olivier, B.; Juríček, M.
J. Am. Chem. Soc. 2018, 140, 10839-10847.
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18. Cethrene: The Chameleon of Woodward–Hoffmann Rules
Šolomek, T.; Ravat, P.; Mou, Z.; Kertesz, M.; Juríček, M.
J. Org. Chem. 2018, 83, 4769−4774.
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17. Configurational Stability of [5]Helicenes
Ravat, P.; Hinkelmann, R.; Steinebrunner, D.; Prescimone, A.; Bodoky, I.; Juríček, M.
Org. Lett. 2017, 19, 3707−3710.
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16. π-Extended and Curved Anti-Aromatic Polycyclic Hydrocarbons
Liu, J.; Ma, J.; Zhang, K.; Ravat, P.; Machata, P.; Avdoshenko, S. M.; Hennersdorf, F.; Komber, H.; Pisula, W.; Weigand, J. J.; Popov, A. A.; Berger, R.; Müllen, K.; Feng, X.
J. Am. Chem. Soc. 2017, 139, 7513−7521.
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15. Mixed Phenyl and Thiophene Oligomers for Bridging Nitronyl Nitroxides
Kolanji, K.; Ravat, P.; Bogomyakov, A.; Ovcharenko, V.; Schollmeyer, D.; Baumgarten, M.
J. Org. Chem. 2017, 82, 7764−7773.
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13. Biradicaloid with a Twist: Lowering the Singlet–Triplet Gap
Ravat, P.; Šolomek, T.; Ribar P.; Juríček, M.
Synlett 2016, 27, 1613−1617.
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Cover Article.
12. Cethrene: A Helically Chiral Biradicaloid Isomer of Heptazethrene
Ravat, P.; Šolomek, T.; Rickhaus, M.; Häussinger, D.; Neuburger, M.; Baumgarten, M.; Juríček, M.
Angew. Chem. Int. Ed. 2016, 55, 1183−1187.
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11. Unraveling the Mark of Surface Defects on a Spinterface: the Nitronyl Nitroxide/TiO2(110) interface
Kakavandi, R.; Calzolari, A.; Borozdina, Y. B.; Ravat, P.; Chassé, T.; Baumgarten, M.; Casu, M. B.
Nano Res. 2016, 9, 3515−3527.
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10. Positional Isomers of Tetramethoxypyrene-Based Mono- and Biradicals
Ravat, P.; Baumgarten, M.
J. Phys. Chem. B 2015, 119, 13649−13655.
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09. Tetrabenzo[a,f,j,o]perylene: A Polycyclic Aromatic Hydrocarbon With An Open-Shell Singlet Biradical Ground State
Liu, J.; Ravat, P.; Wegner, M.; Baumgarten, M; Feng, X.; Müllen, K.
Angew. Chem. Int. Ed. 2015, 54, 12442−12446.
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08. Equivalence of Ethylene and Azo-Bridges in the Modular Design of Molecular Complexes: The Role of Weak Interactions
Ravat, P.; SeethaLekshmi, S.; Biswas, S. N.; Nandy, P.; Varughese, S.
Cryst. Growth Des. 2015, 15, 2389−2401.
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07. Electronic Structure and Stability of Fluorophore-Nitroxide Radicals from Ultra High Vacuum to Air Exposure
Kakavandi, R.; Ravat, P.; Savu, S.; Borozdina, Y.; Baumgarten, M.; Casu, B.
ACS Appl. Mater. Interfaces 2015, 7, 1685−1692. DOI: 10.1021/am508854u
06. Tschitschibabin type Biradicals: Benzenoid or Quinoid?
Ravat, P.; Baumgarten, M.
Phys. Chem. Chem. Phys. 2015, 17, 983−991.
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05. Positive Magneto-LC Effect in Conjugated Spin-Bearing Hexabenzocoronene
Ravat, P.; Marszalek, T.; Pisula, W.; Müllen, K.; Baumgarten, M.
J. Am. Chem. Soc. 2014, 136, 12860−12863.
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04. Breaking the Semi-Quinoid Structure: Spin-Switching from Strongly Coupled Singlet to Polarized Triplet State
Ravat, P.; Teki, Y.; Ito, Y.; Gorelik, E.; Baumgarten, M.
Chem. Eur. J. 2014, 20, 12041−12045.
DOI: 10.1002/chem.201403338
03. Crystal Engineering of Tolane Bridged Nitronyl Nitroxide Biradicals: Candidates for Quantum Magnets
Ravat, P.; Borozdina, Y.; Ito, Y.; Enkelmann, V.; Baumgarten, M.
Cryst. Growth Des. 2014, 14, 5840−5846.
DOI: 10.1021/cg5010787
02. Synthesis of Nitrogen-Doped ZigZag-Edge Peripheries: Dibenzo-9a-azaphenalene as Repeating Unit
Berger, R.; Giannakopoulos, A.; Ravat, P.; Wagner, M.; Beljonne, D.; Feng, X.; Müllen, K.
Angew. Chem. Int. Ed. 2014, 53, 10520−10524.
DOI: 10.1002/anie.201403302
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01. Tetramethoxypyrene-Based Biradical Donors with Tunable Physical and Magnetic Properties
Ravat, P.; Ito, Y.; Gorelik, E.; Enkelmann, V.; Baumgarten, M.
Org. Lett. 2013, 15, 4280−4283.
DOI: 10.1021/ol4015859