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...

Tovább

Bejelentkezés

CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

Login


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
tzjanosi@gamma.ttk.pte.hu
  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
    http://dx.doi.org/10.1155/2014/708739
  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
CONTACT
Dr. János Erostyák
Research Group Leader
 erostyak@fizika.ttk.pte.hu
 +36 72 501500 /29151, 29222