RESEARCH INTERESTS

At present

• Photophysics of organic molecules
• Processes in excited states of highly polarized molecules
• Water splitting, excited state hydrogen abstraction from water or methanol

REPRESENTATIVE PUBLICATIONS

39. Magnifying the ESIPT process in tris(salicylideneanilines) via the steric effect - a pathway to the molecules with panchromatic fluorescence
Paweł Gawryś, Olaf Morawski, Marzena Banasiewicz, Cristina A. Barboza,
Physical Chemistry Chemical Physics, 25 (2023) 12500-12514.

38. Strong Chiroptical Effects in the Absorption and Emission of Macrocycles Based on the 2,5-Diaminoterephthalate Minimal Fluorophore
K. Nowak, Olaf Morawski, F. Zinna, G. Pescitelli, L. Di Bari, M. Górecki, M. Grzybowski,
Chem. Eur. J., 29 (2023) e202300932, DOI10.1002/chem.202300932.

37. Harnessing Proton-Coupled Electron Transfer for Hydrogenation of Aza-Arenes: Photochemistry of Quinoxaline Derivatives in Methanol
Olaf W. Morawski, Paweł Gawryś, Andrzej L. Sobolewski,
J. Phys. Chem. A, 127 (2023) 8871-88881.

36. Photochemical Hydrogen Storage with Hexaazatrinaphthylene
Olaf Morawski,* Paweł Gawryś, Jarosław Sadło and Andrzej L. Sobolewski
ChemPhysChem, 23 (2022) e202200077. DOI10.1002/cphc.202200077

35. Hydrogen Storage with Hexaazatrinaphthylene
Olaf Morawski,*
ChemistryViews, (2022) https://www.chemistryviews.org/hydrogen-storage-with-hexaazatrinaphthylene/.

34. Photochemical Hydrogen Storage with Hexaazatrinaphthylene"
Olaf Morawski,* Paweł Gawryś, Jarosław Sadło and Andrzej L. Sobolewski
ChemPhysChem, 23 (2022) e202200077.

33. Polarized, V-Shaped, and Conjoined Biscoumarins: From Lack of Dipole Moment Alignment to High Brightness"
Łukasz Kielesiński, Irena Deperasińska,* Olaf Morawski, Kateryna V. Vygranenko, Erik T. Ouellette and Daniel T. Gryko*
J. Org. Chem., 87 (2022) 5961-5975.

32. Fluorene analogues of xanthenes - low molecular weight near-infrared dyes"
Marek Grzybowski,* Olaf Morawski, Krzysztof Nowak and Paula Garbacz
Chem. Commun., 58 (2022) 5455-5458.

31. Polarized Helical Coumarins: [1,5] Sigmatropic Rearrangement and Excited-State Intramolecular Proton Transfer
Łukasz Kielesiński, Olaf W. Morawski,* Cristina A. Barboza, and Daniel T. Gryko*
J. Org. Chem. 86 (2021) 6148-6159.

30. Spectra and nature of the electronic states of [1]Benzothieno[3,2?b][1]benzothiophene (BTBT): single crystal and the aggregates.
Irena Deperasińska, Marzena Banasiewicz, Paweł Gawryś, Olaf Morawski, Joanna Olas, Bolesław Kozankiewicz,
The Journal of Chemical Physics 155 (2021) 034504.

29. Unravelling the ambiguity of the emission pattern of donor-acceptor salicylaldimines.
C.A. Barboza, O. Morawski, J. Olas, P. Gawryś, M. Banasiewicz, K. Suwinska, S. Shova, B. Kozankiewicz, A.L. Sobolewski
Journal of Molecular Liquids, 343 (2021) 117532, DOI10.1016/j.molliq.2021.117532.

28. Aggregation controlled photoluminescence of hexaazatri-naphthylene (HATN) – an experimental and theoretical study
Olaf Morawski,* Jerzy Karpiuk, Paweł Gawryś and Andrzej L. Sobolewski
Phys. Chem. Chem. Phys. 22 (2020) 15437-15447.

27. Highly Polarized Coumarin Derivatives Revisited: Solvent-Controlled Competition Between Proton-Coupled ElectronTransfer and Twisted Intramolecular Charge Transfer
Olaf W. Morawski,* Łuksz Kielesiński, Daniel T. Gryko*, and Andrzej L. Sobolewski
Chem. Eur. J. 26 (2020) 7281–7291.

26. The Interplay between Solvation and Stacking of Aromatic Rings Governs Bright and Dark Sites of Benzo[g]coumarins
Łukasz Kielesiński, Daniel T. Gryko,* Andrzej L. Sobolewski* and Olaf Morawski*
Chem. Eur. J. 25 (2019) 15305–15314.

25. The synthesis and photophysical properties of tris-coumarins
Łuksz Kielesiński, Olaf W. Morawski,* Andrzej L. Sobolewski* and Daniel T. Gryko*
Phys. Chem. Chem. Phys. 21 (2019) 8314-8325.

24. Fluorescence of 4 (Diisopropylamino)benzonitrile (DIABN) Single Crystals from 300 K down to 5 K. Intramolecular Charge Transfer Disappears below 60 K
K.A. Zachariasse*, S.I. Druzhinin, Olaf Morawski, and Bolesław Kozankiewicz,
J. Phys. Chem. A 122 (2018) 6985-6996.

23. Effect of conformational flexibility on photophysics of bis-coumarins
Łukasz Kielesiński, Daniel T. Gryko*, Andrzej L. Sobolewski, and Olaf W. Morawski*,
Phys. Chem. Chem. Phys. 20 (2018) 14491-14503.

22. The Coumarin-Dimer Spring--The Struggle between Charge Transfer and Steric Interactions
Łukasz Kielesiński, Olaf Morawski,* L Dobrzycki, Andrzej L. Sobolewski*, and Daniel T. Gryko*
Chem. Eur. J. 23 (2017) 9174-9184.

21. Environment-sensitive behavior of DCNP in solvents with different viscosity and polarity
Olaf Morawski*, Bolesław Kozankiewicz, Andrzej L. Sobolewski and Andrzej Miniewicz
ChemPhysChem 16 (2015) 3500-3510.

20. Titanyl phthalocyanine as water photooxidation agent
Olaf Morawski*, K. Izdebska, Elena Karpiuk, Andrzej Suchocki, Y. Zhydachevskii, and Andrzej L. Sobolewski
J. Phys. Chem. C 119 (2015) 14085-14093.

19. Spontaneous crystalization and aggregation of DCNP pyrazoline-based organic dye as a way to tailor random lasers
K. Cyprych, L. Sznitko, Olaf Morawski, Andrzej Miniewicz, I Rau and J Myśliwiec*
J. Phys. D 48 (2015) 195101.

18. On the origin of fluorescence emission in optically non-linear DCNP crystals
Olaf Morawski*, Andrzej L. Sobolewski, Bolesław Kozankiewicz, L. Sznitko and Andrzej Miniewicz*
Phys. Chem. Chem. Phys. 16 (2014) 26887.

17. Photoinduced water splitting with oxotitanium tetraphenylporphyrin
Olaf Morawski, K. Izdebska, Elena Karpiuk, Jacek Nowacki, Andrzej Suchocki and Andrzej L. Sobolewski*
Phys. Chem. Chem. Phys. 16 (2014) 15256.

16. Purely electronic and vibronic fluorescence excitation of single terrylene molecules in a naphthalene crystal.
Marzena Banasiewicz, Józef Dresner, Olaf Morawski, D. Wiũcek, Bolesław Kozankiewicz
Acta Phys. Polonica A 112 (2007) S85-S94 (Supplement S).

15. Triplet population and depopulation rates of single terrylene molecules in p-terphenyl crystal.
Marzena Banasiewicz, Olaf Morawski, Dariusz Wiącek, Bolesław Kozankiewicz
Chem. Phys. Letters 414 (2005) 374-377.

14. Laser-induced emission spectroscopy of acridine cooled in a supersonic jet: the role of dimers and hydrogen-bonding in photophysics of acridine.
Jerzy Prochorow, Irena Deperasińnska, Olaf Morawski,
J. Mol. Struct., 555 (2000) 97-106.

13. Fluorescence excitation and fluorescence spectra of jet-cooled acridine molecules: acridine dimer formation and structure.
Jerzy Prochorow, Irena Deperasińnska, Olaf Morawski,
Chem. Phys. Lett., 316 (1999) 24-30.

12. Internal conversion in 1-aminonaphthalenes.: Influence of amino twist angle.
I. Rückert, A. Demeter, Olaf Morawski, W. Kühnle, E. Tauer, K.A. Zachariasse,
J. Phys. Chem. A, 103 (1999) 1958-1966.

11. Emission of acridine and its aggregates isolated in the neon matrix.
Jerzy Prochorow, Bolesław Kozankiewicz, B.B.G. Gemi, Olaf Morawski,
Acta Phys. Polonica A, 94 (1998) 746-760.

10. Cavity ring down measurement of the (1,0) B 2?u+-X 2?g+ absorption band of the N2+ cation.
Jan Fulara, Leszek Łapiński, Olaf Morawski, Jerzy Prochorow,
Acta Phys. Polonica A, 93 (1998) 723-730.

9. Erratum to "Intramolecular charge transfer in the excited state. Kinetics and configurational changes.
K. A. Zachariasse, M. Grobys, T. von der Haar, A. Hebecker, Y.V. Il'ichev, Y.B. Jiang, Olaf Morawski, W. Kuhnle,
J. Photochem. Photobiol. A, 115 (1998) 259-259.

8. Photoinduced intramolecular charge transfer and internal conversion in molecules with a small energy gap between S1 and S2. Dynamics and structure.
K. A. Zachariasse, M. Grobys, T. von der Haar, A. Hebecker, Y.V. Il'ichev, Olaf Morawski, I. Rückert, W. Kühnle,
J. Photochem. Photobiol. A, 105 (1997) 373-383.

7. Intramolecular electron transfer and dual fluorescence. Solvent-induced two-level coupling.
K. A. Zachariasse, M. Grobys, Th. von der Haar, A. Hebecker, Y. V. Il'itchev, W. Kühnle, Olaf Morawski,
J. Inf. Record. Mater., 22 (1996) 553-560.

6. Intramolecular charge transfer in the excited state. Kinetics and configurational changes.
K. A. Zachariasse, M. Grobys, T. von der Haar, A. Hebecker, Y.V. Il'ichev, Y.B. Jiang, Olaf Morawski, W. Kuhnle,
J. Photochem. Photobiol. A, 102 (1996) 59-70.

5. Fluorescence and phosphorescence emission and nonradiative relaxation of acridine in a crystalline matrix of 2,3-dimethylnaphthalene.
Olaf Morawski, Jerzy Prochorow,
Chem. Phys. Lett., 242 (1995) 253-258.

4. Triplet States and Triplet Excitons in Chemically Mixed Crystals of Acridine with Anthracene.
Olaf Morawski, Jerzy Prochorow,
Acta Phys. Polonica A, 88 (1995) 469-481.

3. Excited States of Acridine – Anthracene Mixed Crystals.
Olaf Morawski, Jerzy Prochorow, and R. Radomski,
Mol. Cryst. Liq. Cryst., 228 (1993) 665-670.

2. Aggregation-controlled fluorescence of acridine in a crystalline matrix of anthracene.
Olaf Morawski, Bolesław Kozankiewicz, Jerzy Prochorow, R. Radomski,
Chem. Phys. Lett., 173 (1990) 412-416.

1. Singlet states of chemically mixed anthracene-acridine crystals.
Olaf Morawski, Bolesław Kozankiewicz, Jerzy Prochorow, R. Radomski,
Chem. Phys. Lett., 150 (1988) 307-310.