Total impact factor: 89.241

Number of publications: 38

1. Szemik-Hojniak Anna, Deperasińska Irena, Erez Yuval, Gawłowska Monika, Jerzykiewicz Lucjan
Ultrafast excited state dynamics of pyridine N-oxide derivative in solution; femtosecond fluorescence up-conversion and theoretical calculations
Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 2023, 285, 121896/1-121896/13
IF: 4.4
10.1016/j.saa.2022.121896

2. Szemik-Hojniak Anna, Deperasińska Irena, Nizhnik Yakov P., Jerzykiewicz Lucjan
Luminescent properties of chameleon-like metal-organic framework between zinc(II) dichloride and two quinoline-N-oxide molecules.
Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 2020, 239, 118464/1-118464/8
IF: 4.098
10.1016/j.saa.2020.118464

3. Szemik-Hojniak Anna, Deperasińska Irena, Nizhnik Yakov P.
Photophysical behavior of a potential drug candidate, trans-[2-(4-methoxystyryl)]quinoline-1-oxide tuned by environment effects.
Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 2017, 187, 198-206
IF: 2.88
10.1016/j.saa.2017.06.024

4. Jankowski Andrzej, Jankowski Adam, Kluczyk Alicja, Szemik-Hojniak Anna
Effect of neutral salts on the excited state proton transfer in the fluorescent probe anchored to the uncharged micelles.
Journal of Photochemistry and Photobiology A-Chemistry, 2016, 329, 203-212
IF: 2.625
10.1016/j.jphotochem.2016.06.028

5. Szemik-Hojniak Anna, Oberda Krzysztof, Deperasińska Irena, Nizhnik Yakov P., Jerzykiewicz Lucjan
A negligible CT character of the lowest excited state of a novel complex of zinc tetraphenylporphyrin with axially bonded 2-(4-methoxy-trans-styryl)quinoline-1-oxide ligand : experimental studies and TD DFT/CAM B3LYP [6-31 G(d,p)] calculations.
Polyhedron, 2015, 88, 190-198
IF: 2.108
10.1016/j.poly.2014.12.025

6. Balkowski Grzegorz, Szemik-Hojniak Anna, Buma Wybren Jan, Zhang Hong, Deperasińska Irena, Poisson Lionell, Mestdagh Jean Michel, Piani Giovanni, Oberda Krzysztof
Ultrafast excited-state dynamics of a cyano-substituted "Proton sponge".
Journal of Physical Chemistry A, 2015, 119, 11233-11240
IF: 2.883
10.1021/acs.jpca.5b06631

7. Oberda Krzysztof, Deperasińska Irena, Nizhnik Yakov P., Szemik-Hojniak Anna
A novel complex of zinc tetraphenylporphyrin with two dioxane molecules in a rare attachment. Crystal structure, spectroscopy and theoretical calculations.
Polyhedron, 2013, 51, 61-69
IF: 2.047
10.1016/j.poly.2012.12.014

8. Szemik-Hojniak Anna, Deperasińska Irena, Oberda Krzysztof, Erez Yuval, Huppert Dan, Nizhnik Yakov P.
Ultrafast excited state dynamics of trans-[4-(4'-dimethylaminostyryl)] pyridine N-oxide in solution : femtosecond fluorescence up-conversion and theoretical calculations.
Physical Chemistry Chemical Physics, 2013, 15, 9914-9923
IF: 4.198
10.1039/c3cp50527h

9. Szemik-Hojniak Anna, Wiśniewski Łukasz, Deperasińska Irena, Makarewicz A., Jerzykiewicz Lucjan, Puszko Aniela, Erez Yuval, Huppert Dan
The impact of solvent polarity on intramolecular proton and electron transfer in 2-alkylamino-4-nitro-5-methyl pyridine N-oxides.
Physical Chemistry Chemical Physics, 2012, 14, 8147-8159
IF: 3.829
10.1039/C2CP40591A

10. Wiśniewski Łukasz, Deperasińska Irena, Żurowska Bogumiła, Szemik-Hojniak Anna
Effect of solvent polarity on photophysical parameters of 3-aminoflavone.
Journal of Photochemistry and Photobiology A-Chemistry, 2011, 224, 62-67
IF: 2.421
10.1016/j.jphotochem.2011.09.007

11. Jankowski Andrzej, Wiśniewski Łukasz, Jankowski Adam, Kluczyk Alicja, Chmielewski Piotr J., Szemik-Hojniak Anna
Impact of micelle ionic electrical double layer structure on the excited state protolytic reaction in the fluorescent probe bound to the colloidal nanoparticles.
Journal of Physical Chemistry B, 2011, 115, 8078-8087
IF: 3.696
10.1021/jp110670j

12. Oberda Krzysztof, Deperasińska Irena, Nizhnik Yakov P., Jerzykiewicz Lucjan, Szemik-Hojniak Anna
Photoinduced electron transfer in pentacoordinated complex of zinc tetraphenylporphyrin and isoquinoline N-oxide : crystal structure, spectroscopy and DFT studies.
Polyhedron, 2011, 30, 2391-2399
IF: 2.057
10.1016/j.poly.2011.06.009

13. Deperasińska Irena, Szemik-Hojniak Anna, Osowska Karolina, Rode M. F., Szczepanik A., Wiśniewski Łukasz, Lis Tadeusz, Szafert Sławomir
Synthesis, photophysics and excited state structure of 1,8-di(p-tolyl)-1,3,5,7-octatetrayne.
Journal of Photochemistry and Photobiology A-Chemistry, 2011, 217, 299-307
IF: 2.421
10.1016/j.jphotochem.2010.10.023

14. De Klerk J. S., Van Stokkum I. H. M., Szemik-Hojniak Anna, Deperasińska Irena, Gooijer C., Zhang Hong, Buma Wybren Jan, Ariese F.
Excited state processes of 2-butylamino-6-methyl-4-nitropyridine Noxide in nonpolar solvents. A transient absorption spectroscopy study.
Journal of Physical Chemistry A, 2010, 114, 4045-4050
IF: 2.732
10.1021/jp909468h

15. Wiśniewski Łukasz, Deperasińska Irena, Staszewska Anna, Stefanowicz Piotr, Berski Sławomir, Lipkowski Paweł, Szewczuk Zbigniew, Szemik-Hojniak Anna
Photophysical properties of dipeptides containing substituted 3-(quinoxalin-6-yl) alanine. Spectroscopic studies and theoretical calculations.
Journal of Physical Chemistry A, 2010, 114, 9405-9412
IF: 2.732
10.1021/jp911285u

16. De Klerk J. S., Szemik-Hojniak Anna, Ariese F., Gooijer C.
Cryogenic fluorescience and absorption spectroscopy studies on monomeric and dimeric species of 2-butylamino-6-methyl-4-nitropyridine N -oxide.
Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 2009, 72, 144-150
IF: 1.566
10.1016/j.saa.2008.09.003

17. Wiśniewski Łukasz, Urbanowicz Agnieszka, Jerzykiewicz Lucjan, Makarewicz A., Deperasińska Irena, Van der Zwan G., Haraszkiewicz N., Puszko Aniela, Szemik-Hojniak Anna
Crystal structure, spectroscopic, and theoretical studies of 2-methylamino-6-methyl-4-nitropyridine N-oxide.
Journal of Molecular Structure, 2009, 920, 45-51
IF: 1.551
10.1016/j.molstruc.2008.10.029

18. Makarewicz A., Szemik-Hojniak Anna, Van der Zwan G., Deperasińska Irena
Excited-state forms of 2-methylamino-6-methyl-4-nitropyridineN-oxide and 2-butylamino-6-methyl-4-nitropyridineNoxide.
Journal of Physical Chemistry A, 2009, 113, 3438-3446
IF: 2.899
10.1021/jp8073927

19. Zych Eugeniusz, Walasek Adam, Szemik-Hojniak Anna
Variation of emission color of Y₃Al₅O₁₂:Ce induced by thermal treatment at reducing atmosphere.
Journal of Alloys and Compounds, 2008, 451, 582-585
IF: 1.51
10.1016/j.jallcom.2007.04.116

20. Nizhnik Yakov P., Szemik-Hojniak Anna, Deperasińska Irena, Jerzykiewicz Lucjan B., Korabik Maria, Hojniak Marek, Andreev V. P.
X-ray crystal structure and magnetic and photophysical properties of novel copper(II) N-oxide adduct [(4-MPyO)₂(CuCl₂)₂(H₂O)(C₂H₅OH)] (4-MPyO = 4-(4-methoxystyryl)pyridine N-oxide).
Inorganic Chemistry, 2008, 47, 2103-2112
IF: 4.147
10.1021/ic701413m

21. De Klerk J. S., Szemik-Hojniak Anna, Ariese F., Gooijer C.
Intramolecular proton-transfer processes starting at higher excited states: a fluorescence study on 2-butylamino-6-methyl-4-nitropyridineN-oxide in nonpolar solutions.
Journal of Physical Chemistry A, 2007, 111, 5828-5832
IF: 2.918

22. Deperasińska Irena, Makarewicz A., Szemik-Hojniak Anna
Theoretical analysis of the electronic ground and excited Franck-Condon state of 2-alkylamino-(3,5, or 6)-methyl-4-nitropyridine N-oxides.
Acta Physica Polonica A, 2007, 112, 71-84
IF: 0.34

23. Szemik-Hojniak Anna, Deperasińska Irena, Jerzykiewicz Lucjan B., Sobota Piotr, Hojniak Marek, Puszko Aniela, Haraszkiewicz N., Van der Zwan G., Jacques P.
Crystal structure, spectroscopic, and theoretical investigations of excited-state proton transfer in the doubly hydrogen-bonded dimer of 2-butylamino-6-methyl-4-nitropyridyneN-oxide.
Journal of Physical Chemistry A, 2006, 110, 10690-10698
IF: 3.047
10.1021/jp062405x

24. Poór B., Michniewicz Natalia, Kállay M., Buma Wybren Jan, Kubínyí M., Szemik-Hojniak Anna, Deperasińska Irena, Puszko Aniela, Zhang Hong
Femtosecond studies of charge-transfer mediated proton transfer in 2-butylamino-6-methyl-4-nitropyridineNoxide.
Journal of Physical Chemistry A, 2006, 110, 7086-7091
IF: 3.047

25. Balkowski Grzegorz, Szemik-Hojniak Anna, Van Stokkum I. H. M., Zhang Hong, Buma Wybren Jan
Femtosecond excited state studies of the two-center three-electron bond driven twisted internal charge transfer dynamics in 1,8-bis(dimethylamino)naphthalene.
Journal of Physical Chemistry A, 2005, 109, 3535-3541
IF: 2.898

26. Szemik-Hojniak Anna, Deperasińska Irena, Buma Wybren Jan, Balkowski Grzegorz, Pozharskii Alexander F., Vistorobskii N. V., Allonas X.
The asymmetric nature of charge transfer states of the cyano-substituted proton sponge.
Chemical Physics Letters, 2005, 401, 189-195
IF: 2.438

27. Szemik-Hojniak Anna, Deperasińska Irena, Buma Wybren Jan, Balkowski Grzegorz, Pozharsky Alexander F., Vistorobskii N. V.
Two excited state structures of donor-acceptor substituted "proton sponge".
Key Engineering Materials, 2005, 277-279, 1060-1065
IF: 0.224

28. Szemik-Hojniak Anna, Balkowski Grzegorz, Wurpel G. W. H., Herbich J., Van der Waals J. H., Buma Wybren Jan
Photophysics of 1,8-bis(dimethylamino)naphthalene in solution: internal charge transfer with a twist.
Journal of Physical Chemistry A, 2004, 108, 10623-10631
IF: 2.639

29. Szemik-Hojniak Anna, Głowiak Tadeusz, Deperasińska Irena, Puszko Aniela, Talik Z.
Molecular crystals of nitraminopyridine N-oxides.
Nonlinear Optics. Quantum Optics, 2003, 30, 215-231

30. Szemik-Hojniak Anna, Głowiak Tadeusz, Deperasińska Irena, Puszko Aniela
Crystal structure and spectral considerations of 5-methyl-2-nitraminopyridine N-oxide.
Canadian Journal of Chemistry, 2002, 80, 1242-1251
IF: 1.26

31. Szemik-Hojniak Anna, Głowiak Tadeusz, Deperasińska Irena, Puszko Aniela
Structural and spectral analysis of 3- and 4-methylated nitraminopyridine N-oxides.
Journal of Molecular Structure, 2001, 597, 279-291
IF: 0.907

32. Michalski J., Hanuza Jerzy, Mączka Mirosław, Talik Z., Głowiak Tadeusz, Szemik-Hojniak Anna, Van der Maas J. H.
Structural and vibrational data obtained from experimental (X-ray, IR and Raman) and AM1, PM3 and MNDO semi-empirical methods for ortho meta and para nitraminopyridine N-oxides.
Journal of Molecular Structure, 2001, 596, 109-121
IF: 0.907

33. Szemik-Hojniak Anna, Rettig W., Deperasińska Irena
The forbidden emission of protonated proton sponge.
Chemical Physics Letters, 2001, 343, 404-412
IF: 2.364

34. Szemik-Hojniak Anna, Deperasińska Irena, Allonas X., Jacques P.
Inversion of states in two conformers od 1,8-bis(dimethylamino)naphthalene-the proton sponge.
Journal of Molecular Structure, 2000, 526, 219-225
IF: 0.849

35. Szemik-Hojniak Anna, Głowiak Tadeusz, Puszko Aniela, Talik Z.
Structural and special analysis of ortho- and meta-substituted nitraminopyridine N-oxides.
Journal of Molecular Structure, 1998, 449, 77-90
IF: 0.807

36. Szemik-Hojniak Anna, Zwier J. M., Buma Wybren Jan, Bursi R., Van der Waals J. H.
Two ground state conformers of the proton sponge 1,8-bis(dimethylamino)naphthalene revealed by fluorescence spectroscopy and ab initio calculations. .
Journal of the American Chemical Society, 1998, 120, 4840-4844
IF: 5.725

37. Filarowski Aleksander, Szemik-Hojniak Anna, Głowiak Tadeusz, Koll Aleksander
Anomalous strengthening of the intramolecular hydrogen bond by steric repulsion.
Journal of Molecular Structure, 1997, 404, 67-74
IF: 0.884
10.1016/S0022-2860(96)09363-5

38. Szemik-Hojniak Anna, Koll Aleksander
Intramolecular excited state proton transfer in Mannich base - 3,5,6-trimethyl-2(N,N'-diethylaminomethyl) phenol.
Journal of Photochemistry and Photobiology A-Chemistry, 1993, 72, 123-132
IF: 1.187
10.1016/1010-6030(93)85019-5