About us

A Szentágothai János Kutatóközpont a PTE korszerű, nemzetközi tudományszervezési és menedzsment normák szerint kialakított új intézménye, amely az élettudományi, élettelen természettudományi, valamint környezettudományi oktatás...



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Spectroscopy Research Group

  • Research concept
  • Members
  • Publications
  • R and D results
  • Services
  • Laboratories, instruments
  • Galéria

Spectrofluorimetry characterization of fluorescent materials useful in several fields of biology and biomedicine. Developing of nanoprobes of high stability and high fluorescence intensity.

Study of: (1) Cavitands; (2) Luminescent quantum dots; (3) Single-wall carbon nanotubes (SWCN); (4)

Lanthanide complexes capable of two-photon NIR-to-VIS conversion.

Intra- and intermolecular energy transfer in lanthanide complexes.

Nano- and picosecond study of protein dynamics.

Dielectric relaxation of small fluorophores in the time range of femto- and picoseconds.

Numerical spectral analysis and data mining in complex samples

Time-resolved and steady-state fluorescence spectroscopy analysis of different liquid and solid samples.

Developing of integrating spheres for determination of real spectra and exact concentration of scattering and/or low concentration solutions.

Tibor Zoltán Jánosi
assistant research fellow
  1. Tibor Zoltan Janosi, Jouko Korppi-Tommola, Zsolt Csok, Laszlo Kollar, Pasi Myllyperkio, Janos Erostyak:
    Anthracene Fluorescence Quenching by a Tetrakis (Ketocarboxamide) Cavitand. Journal of Spectroscopy, (Volume 2014), Article ID 708739, 8 pages
  2. G. Makkai, J. Erostyák, Á. Mesterházy:
    Identification of Fusarium graminearum Infection Severity of Wheat Grains by Digitally Aided Spectroscopy.
    Opt. Eng. 52 (5), 057004 (May 09, 2013); doi: 10.1117/1.OE.52.5.057004. I: 0,96
  3. G. Makkai, J. Erostyák:
    Quick Multicomponent Analysis Based on Matrix Isopotential Synchronous Fluorimetry.
    ISRN Spectroscopy, (Volume 2012), Article ID 917879, 6 pages, doi:10.5402/2012/917879.
  4. Habre W, Albu G, Janosi TZ, Fontao F, von Ungern-Sternberg BS, Beghetti M, Petak F.:
    Prevention of bronchial hyperreactivity in a rat model of precapillary pulmonary hypertension.
    Respir Res. (2011) 27;12:58.
  5. G. Makkai, A. Buzády, J. Erostyák:
    Sensitivity Test of Derivative Matrix Isopotential Synchronous Fluorimetry and Least Squares Fitting Methods.
    J. Fluoresc. (2010) 20:87–94 http://dx.doi.org/10.1007/s10895-009-0526-3
  6. Porra L, Peták F, Strengell S, Neitola K, Janosi TZ, Suhonen H, Suortti P, Sovijärvi AR, Habre W, Bayat S.:
    Acute cigarette smoke inhalation blunts lung responsiveness to methacholine and allergen in rabbit: differentiation of central and peripheral effects.
    Am J Physiol Lung Cell Mol Physiol. (2010) 299(2):L242-51.
  7. von Ungern-Sternberg BS, Habre W, Regli A, Pache JC, Fontao F, Janosi TZ, Beghetti M, Peták F.:
    Precapillary pulmonary hypertension leads to reversible bronchial hyperreactivity in rats.
    Exp Lung Res. (2010) 36(3):129-39.
  8. Habre W, Jánosi TZ, Fontao F, Meyers C, Albu G, Pache JC, Peták F.:
    Mechanisms for lung function impairment and airway hyperresponsiveness following chronic hypoxia in rats.
    Am J Physiol Lung Cell Mol Physiol. (2010) 298(4):L607-14.
  9. Peták F, Janosi TZ, Myers C, Fontao F, Habre W.:
    Impact of elevated pulmonary blood flow and capillary pressure on lung responsiveness.
    J Appl Physiol. (2009) 107(3):780-6.
  10. Bayat S, Strengell S, Porra L, Janosi TZ, Petak F, Suhonen H, Suortti P, Hantos Z, Sovijärvi AR, Habre W.:
    Methacholine and ovalbumin challenges assessed by forced oscillations and synchrotron lung imaging.
    Am J Respir Crit Care Med. (2009) 15;180(4):296-303.
  11. J. Erostyák, P. Myllyperkiö, A. Buzády, J. Korppi-Tommola:
    Sub-Picosecond Transient Signal Spectroscopy of Prodan in Dimethylformamide Solution.
    Ann. N.Y. Acad. Sci. 1130: 52-55 (2008). doi: 10.1196/annals.1430.025 S.
  12. Ndao, A. Buzády, J. Erostyák , I. Hornyák:
    Sensitized Luminescence of Trivalent Lanthanide Complexes Eu3+/Quinaldinic Acid and Eu3+/1,4-Dihydro-Oxo-Chinoline-3-Carboxilic Acid.
    J. Fluoresc. 18 (3-4) May-Jul (2008) 649-54. http://dx.doi.org/10.1007/s10895-008-0333-2
  13. Hantos Z, Adamicza A, Jánosi TZ, Szabari MV, Tolnai J, Suki B:
    Lung volumes and respiratory mechanics in elastase-induced emphysema in mice
    J Appl Physiol. (2008) 105(6):1864-72
  14. Zosky GR, Janosi TZ, Adamicza A, Bozanich EM, Cannizzaro V, Larcombe AN, Turner DJ, Sly PD, Hantos Z:
    The bimodal quasi-static and dynamic elastance of the murine lung
    J Appl Physiol. (2008) 105(2):685-92
  15. Zosky GR, Larcombe AN, White OJ, Burchell JT, Janosi TZ, Hantos Z, Holt PG, Sly PD, Turner DJ:
    Ovalbumin-sensitized mice are good models for airway hyperresponsiveness but not acute physiological responses to allergen inhalation
    Clin Exp Allergy. (2008) 38(5):829-38
  16. Bozanich EM, Jánosi TZ, Collins RA, Thamrin C, Turner DJ, Hantos Z, Sly PD:
    Methacholine responsiveness in mice from 2 to 8 wk of age
    J Appl Physiol. (2007) 103(2):542-6

Engineering Sciences, Natural Sciences

  • Determination of real spectra and exact concentration of scattering and/or low concentration solutions.
  • Spectral measurements for material studies, light source checking etc. In the 200 – 1600 nm spectral range. Measurements of excitation, emission, synchronous excitation spectra and decay curves. Vary fast analysis of complex samples using Matrix Isopotential Synchronous Fluorimetry (MISF).
  • Optical planning of indoor and outdoor displays of very high contrast and good visibility for environment of high luminosity using LED sources.
  • Jobin-Yvon Nanolog spectrofluorometer. Spectral range: 200-1600 nm (UV-VIS-NIR), Time range: 50 ps – 100 ns;
  • Jobin-Yvon Fluorolog Tau3 spectrofluorometer. Spectral range: 200-1000 nm. Time range: 0,1 ns – 100 ns;
  • Perkin-Elmer LS50B luminescence spectrometer for steady-state and phosphorescence studies;
  • Spectrophotometers for absorption and transmission measurements.

Spectroscopy Research Group

Dr. János Erostyák
Research Group Leader
 +36 72 501500 /29151, 29222