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I Pracownia Fizyczna


website: julia.univ.gda.pl/~zfo/IPracownia/

Head-master:

prof. Janina Heldt
phone: (+48 58) 5232 269 wew. 2269
e-mail: fizjh@univ.gda.pl

Topics of scientific research:
• Studies of pure scientific character. To this branch belongs determination of physics - chemical constants and spectroscopic properties of following groups of derivatives: 9-acetoxyfenyloanthracene, benzanilide, naphtanilide, fluorenone, fluorene and methyl benzoate.
• Applied studies concern to use the fotoluminescence to study the solvatation processes of organic polar molecules to study the solvatation processes of organic molecules in neat and mixed solvents of organic polar molecules and how conformational changes of molecules in rigid and viscous solution influent on the electronic transition. This studies concern the inhomogeneous band broadening of the fluorescence and phosphorescence bands, the dual emission of fluorescence as well as the red edge effect shift of the fluorescence band maximum to red if the excitation is performed using λex from the red wing of the long wavelength absorption band.
• A separated project consists studies of radiationless electron energy transfer of donor-acceptor systems in homogeneous and inhomogeneous (lipids) solution of molecules showing TICT phenomenon in the S1 excited state. Such systems institute also a project of theoretical studies.

Staff:

 Name and title

 Room

 Contact

Basis Renata 107, 102 tel.: (+48 58) 5232 211 wew. 2211 email
mgr Grabowska Mariola 102 tel.: (+48 58) 5232 211 wew. 2211 email
prof. Heldt Janina 332 tel.: (+48 58) 5232 269 wew. 2269 email
dr Józefowicz Marek 331 tel.: (058) 5232 542 wew. 2542 email
mgr inz. Strugała Władysław 107, 102 tel.: (+48 58) 5232 211 wew. 2211 email

Publications:

 Articles

 Authors/title

 journal/year/number/pages

Józefowicz Marek, Heldt Janina
Preferential solvation of fluorenone and 4-hydroxyfluorenone in binary solvent mixtures.”
Chemical Physics 2003r. no. 294 pages: 105-116
Józefowicz Marek, Heldt Janina, J. Karolczak, Heldt Józef
Fluorescence Quenching and Solvation Processes of Fluorenone and 4-hydroxyfluorenone in binary solvents
Z. Naturforsch 2003r. no. 58a pages: 144-156
Józefowicz Marek, Heldt Janina, Heldt Józef, Kozyra Katarzyna
Effect of hydrogen bonding on the intramolecular charge transfer fluorescence of 6-dodecanoyl-2-dimethylaminonaphtalene
Chemical Physics 2005r. no. 320 pages: 45-53
Józefowicz Marek, Heldt Janina, Aleksiejew Marek
Photophysical properties of amino- and dimethylamino salicylates in neat and binary solvent mixtures
Zeitschrift für Naturforschung 2005r. no. 60a pages: 655-666
Heldt Janina, Józefowicz Marek, Heldt Józef, Kamiński Jerzy
Spectroscopic studies of fluorenone derivatives
Journals of Fluorescence. 2001r. no. Vol.11 No. pages: 65-73
Józefowicz Marek, Heldt Janina, Heldt Józef
The Red-edge Effect in the Spectra of Fluorenone and 4-Hydroxyfluorenone Alkohol Solutions
Zeischrift fur Naturforschung 2002r. no. 57a pages: 787-796
Józefowicz Marek, Heldt Janina, Józef Heldt
Solvent effects on electronic transitions of fluorenone and 4-hydroxyfluorenone
Chemical Physics 2006r. no. 323 pages: 617-621
Józefowicz Marek, Heldt Janina, Heldt Józef
Solvent effects on electronic transitions of fluorenone and 4-hydroxyfluorenone
Chemical Physics 2006r. no. 323 pages: 617-621
Józefowicz Marek
Determination of reorganization energy of fluorenone and 4-hydroxyfluorenone in neat and binary solvent mixture
Spectrochimica Acta Part A 2007r. no. 67 pages: 444-449
Józefowicz Marek, Heldt Janina
Dipole moments studies of fluorenone and 4-hydroxyfluorenone
Spectrochimica Acta Part A 2007r. no. 67 pages: 316-320
Józefowicz Marek, Heldt Janina, A. Bajorek, J. P±czkowski, J. Heldt
Spectroscopic properties of ethyl 5(4-aminophenyl)-3-amono-2,4-dicyanobenzoate
Chemical Physics 2007r. no. 338 pages: 53-61
Józefowicz Marek, Heldt Janina, Heldt Józef, Kozyra K. A.
Electronic excitation energy transfer of Prodan-ORB and Laurdan-ORB systems in model phospholipids membranes
Zeitschrift für. Naturforschung 2008r. no. 63a pages: 1-11
Józefowicz Marek, Heldt Janina, A. Bojarek, J. P±czkowski
Red-edge and inhomogeneous broadening effects of the electronic spectra of ethyl 5-(4-aminophenyl)-3-amino-2,4-dicyanobenzoate
Journal of Photochemisty and Photobiology A. Chem 2008r. no. 196 pages: 38-43
Józefowicz Marek
Spectroscopic determination of salvation shell composition of fluorenone and 4-hydroxyfluorenone in binary solvent mixtures
Spectrochimica Acta Part A 2008r. no. 71 pages: 537
Józefowicz Marek, Heldt Janina, A.M. Iwulska, J. P±czkowski, Aleksiejew Marek , Heldt Józef
Determination of first-order molecular hyperpolarizability of EAADCy and EDMAADCy using steady-state spectroscopic data and quantum-chemical calculations
Optical Materials 2009r. no. 31 pages: 1894-1897
Józefowicz Marek, Heldt Janina, A. Bajorek, J. P±czkowski
Spectroscopic properties of ethyl 5-(4-dimethylaminophenyl)-3-amino-2,4-dicyanobenzoate
Chemical Physics 2009r. no. 363 pages: 88-99
Józefowicz Marek, P. Milart, J.R. Heldt
Determination of ground and excited state dipole moments of 4,5'-diamino[1,1':3',1''-terphenyl]-4',6'-dicarbonitrile using solvatochromic method and quantum-chemical calculations
Spectrochimica Acta Part A 2009r. no. 74 pages: 959-963
Heldt Janina, M. Engelke; H.A. Diehl, Heldt Józef, Kozyra Katarzyna
Concentration and temperaturee dependence of LAURDAN fluorescence in glycerol.
Z. Naturforsch 2003r. no. 58a pages: 581-588
Redzimski T. , Heldt Janina
Spectroscopic Study of Solvatochromic effects in Solution of Amino and Hydroxy Derivatives of Fluorene
2003r. no. 13 no 5 pages: 393-401
Heldt Janina, M. Engelke, H. A. Diehl, Kozyra Katarzyna
Phase transition affects energy transfer efficiency in phospholipid vesicles
Spectrochimica Acta Part A 2005r. no. 61 pages: 1153-1161
Redzimski T. , Heldt Janina
Spectral and photophysical properties of the bi-chromophoric fluorene derivatives
Journal of Molecular Structure 2005r. no. 734 pages: 197-204
Redzimski T. , Heldt Janina
Influence of conformational effects on spectroscopic properties of 2-dimethylamino-9(4’-dimethylamino)phenyl-9-fluorenol
Journal of Fluorescence 2004r. no. 14 pages: 723-731
Heldt Janina, Kwiek Piotr, Heldt Józef, Kozyra Katarzyna, Gondek Grzegorz
Influence of DPPC Liposome Concentration on the Fluorescence Properties of PRODAN and LAURDAN
Zeischrift fur Naturforschung 2004r. no. 59a pages: 809-818
Heldt Janina, Redzimski Tomasz
Spectral and photophysical properties of the bi-chromophoric fluorene derivatives
Journal of Molecular Structure 2004r. no. 734 pages: 197-204
Heldt Janina, M. Obarowska, B. Milewska, Heldt Józef, Kamiński Jerzy
Spectroscopic and laser studies of mixed rhodamine 6G and 10-henyl-9-acetoxyanthracene solutions
Journal of Fluorescence 2001r. no. Vol. 11.No pages: 335-342
Heldt Janina, M. Brozis, Heldt Józef
Experimental and theoretical determination of elektronic state energies of naphthanilides
Zeischrift fur Naturforschung 2001r. no. 56a pages: 841-848
Heldt Janina, H. A. Diehl, J. Heldt, Kozyra Katarzyna
Electronic energy transfer efficiency of mixed solutions of the donor-acceptor pairs: coumarin derivatives-acridine orange
Journal of Photochemistry and Photobiology A: Chemistry 2002r. no. 152 pages: 199-205
Heldt Janina, M. Obarowska, B. Milewska, Heldt Józef, Kamiński Jerzy
Spectroscopic and Laser Studies of Mixed Rhodamine 6G and 10-Phenyl-9acetoxyanthracene Solutions
Journal of Fluorescence 2002r. no. Vol. 11.No pages: 335-342
Heldt Janina, Katarzyna A. Kozyra, Heldt Józef, Kozyra Katarzyna
Influence of spectral heterogeneity of prodan and laurdan solutions on the transfer of electronic energy to octadecyl rhodamine B
Biophysical Chemistry 2006r. no. 121 pages: 57-64
Heldt Janina, Aleksiejew Marek
Ezperimental and theoretical studies of electronic energy states of methyl benzoate derivatives
Journal of Luminescence 2007r. no. 126 pages: 665-676
Heldt Janina, Aleksiejew Marek , Heldt Józef
Luminescence studies of o-hydroxy p-amino and p-dimethylamino methyl benzoate
Journal of Luminescence 2008r. no. 128 pages: 1307-1316
Heldt Janina, Aleksiejew Marek , Heldt Józef
Experimental and theoretical spectroscopic studies of ortho derivatives of methyl p-dimethylaminobenzoate
Journal of Luminescence 2008r. no. pages:
Heldt Janina, Aleksiejew Marek , Heldt Józef
Experimental and theoretical spectroscopic studies of ortho derivatives of methyl p-dimethylaminobenzoate
Journal of Luminescence 2009r. no. 129 pages: 208-220

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