Staff
Head of group
Prof. Dr. hab. Jadwiga Tritt-Goc
phone: +48 61 86 95 226, room: 325, 31
e-mail: jadwiga.tritt-goc@ifmpan.poznan.pl
www: home page
The group
Dr. hab. Michał Bielejewski, Prof. IFM PAN
phone: +48 61 86 95 216, room: 211, 8, 9
Dr. hab. Adam Rachocki, Prof. IFM PAN
phone: +48 61 86 95 241, room: 321, 31, 4
e-mail: adam.rachocki@ifmpan.poznan.pl
Dr. hab. Joanna Kowalczuk
phone: +48 61 86 95 212, room: 212, 31
Dr. Eng. Iga Jankowska
phone: +48 61 86 95 219, room: 210
e-mail: iga.jankowska@ifmpan.poznan.pl
Dr. Eng. Magdalena Knapkiewicz
phone: +48 61 86 95 261, room: 205
Dr. Eng. Łukasz Lindner
phone: +48 61 86 95 207, room: 205
e-mail: lukasz.lindner@ifmpan.poznan.pl
Notable former group members
Prof. Dr. hab. Stanisław Hoffmann
Prof. Dr. hab. Narcyz Piślewski
Dr. Janina Goslar
Research
- Nuclear Magnetic and Dielectric Relaxation in Polymers
- Magnetic Resonance Imaging
- Diffusion Processes in Polymer Gels
- Structure and Molecular Dynamics in Solids
- NMR cryoporometry
- Pore size and distributions in porous materials
- NMR relaxation and phase transition in new organogelators
Equipment
Bruker ASCEND spectrometer coupled to a vertical wide-bore (89-mm) magnet operating at 11.74 T (500 MHz for 1H). The console of the spectrometer equipped with three high power radio-frequency (RF) channels of 1000, 1000, and 500 W is configured for solid-state NMR experiments. The spectrometer is provided with the following accessories:
- 5 mm triple resonance (1H/X/Y) magic angle spinning (MAS) probe with different X/Y frequency combinations (realized with various RF inserts) including 13C, 15N, 31P, 11B, 69Ga, or 2H allows to perform high-resolution solid-state NMR experiments in the temperature range from -70 to 80 °C.
- 4 mm double resonance (X/Y) MAS probe covered the frequency range of 15N - 31P allows to perform high-resolution solid-state NMR experiments in the temperature range from -120 to 150 °
- low-temperature wideline probe with four coils (10 mm for 15N, 5 mm and 10 mm for 2H - 139La, and 5 mm for 59Co - 69Ga) allows to perform static NMR experiments down to 7 K.
- gradient system and diffusion probe with two coils of 5 mm diameter dedicated to 1H and 2H allow to perform pulse field gradient (PFG) NMR diffusion experiments using maximal gradient strength in z direction of 3000 G/cm.
- additional equipment like high-pressure lines with nitrogen gas or dry air, heat exchangers, nitrogen evaporator, efficient gas refrigerator, dewars, pumps, etc. allow to obtain a broad range of experimental temperature conditions.
Bruker AVANCE spectrometer coupled to a vertical wide-bore (90-mm) magnet operating at 7.046 T (300 MHz for 1H). Special accessories like a gradient system, microimaging probehead, and the sophisticated imaging package allowed to performed the NMR imaging. The maximal gradient strength in x, y and z direction is 100 G/cm. The probehead for protons has four interchangeable coils of the diameter 5, 10, 15 and 25 mm. For small samples 1H imaging with 2D resolution of about 10 µm are obtained in our laboratory. The Para Vision software supports a variety of special processing functions including statistical analysis in regions of interest and 3D surface reconstruction. The following imaging methods are performed on our spectrometer:
- Gradient Echo Fast Imaging (GEFI)
- Multislice/Multiecho (MSME), T2 calculations
- Snapshot FLASH Method
- Contrast imaging
- Diffusion imaging (SEDIFFUSION, STEDIFFUSION)
- Constant time/ single point imaging (CTI/SPI)
- Localized spectroscopy (VOSY,VSEL)
- Chemical shift imaging (CSIND)
The system consist of the following units: 1 Tesla wide-bore electromagnet, double circuit magnet/power supply cooling system; 3 NMR probes working in different frequency range; variable temperature controller system for sample temperature control with 0.1 °C precision in the range of - 120 to + 140 °C; local magnetic field compensation system for low Field Relaxometry and Personal NMR Console with Software package: AcqNMR32.
The compact model of SPINMASTER FFC2000 with the electromagnet. The switching time between the polarization, relaxation and detection magnetic field can be 1 ms.
Publications
Publications: 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005
2015
- Proton-conducting Microcrystalline Cellulose Doped with Imidazole. Thermal and Electrical PropertiesElectrochimica Acta, 155, 38-44, 2015
- Thermal Properties, Conductivity, and Spin-lattice Relaxation of Gel Electrolyte Based on Low Molecular Weight Gelator and Solution of High Temperature Ionic LiquidElectrochimica Acta 165, 122–129, 2015
2014
- Properties of PVDF-MCM41 Nanocomposites Studied by Dielectric, Raman and NMR SpectroscopyFerroelectrics, 472, 64-76, 2014
- The solvent-gelator interaction as the origin of different diffusivity behavior of diols in gels formed with sugar-based low-molecular-mass gelatorJournal of Physical Chemistry 118, 4005-4015 (2014)
- Novel application of NMR relaxometry in studies of diffusion in virgin rape oilFood Chemistry, 152, 94-99, 2014
- Proton Conducting Compound of Benzimidazole with Sebacic Acid: Structure, Molecular Dynamics, and Proton ConductivityCrystal Growth & Design, 14, 1211-1220, 2014
- The solvent dynamics at pore surfaces in molecular gels studied by field-cycling magnetic resonance relaxometrySoft Matter 10, 7810-7818, 2014
2013
- Novel supramolecular organogels based on a hydrazide derivatives: non-polar solvent self-assembly, selective gelation properties, nanostructure, solvent dynamiceSoft Matter., 9, 7501 (2013)
- Structure, hydrogen bond network and proton conductivity of new benzimidazole compounds with dicarboxylic acidsCrystEngComm 15, 1950-1959, 2013
2012
- Segmental dynamics in poly(vinylidene fluoride) studied by dielectric, mechanical and nuclear magnetic resonance spectroscopiesPolymer Bulletin 68, 1121-1134, 2012
- Synthesis and characterization of a new proton-conducting material based on imidazole and selenic acidSolid State Ionics, 227, 96-101, 2012
- On the relation between the solvent parameters and the physical properties of methyl-4,6-O-benzylidene-α-D-glucopyranoside organogelsTetrahedron 68, 3803-3810, 2012
- Diffusive diffraction phenomenon observed by PGSE NMR technique in sugar-based low-molecular-mass gelLangmuir 28, 14039-14044, 2012
- Dynamic processes and chemical composition of Lepidium sativum seeds determined by means of field-cycling NMR relaxometry and NMR spectroscopyAnal Bioanal Chem 404, 3155–3164, 2012
2011
- Influence of solvent on the thermal stability and organization of self-assembling fibrillar networks in methyl-4,6-O-(p-nitrobenzylidene)-α-D-glucopyranoside gels.Tetrahedron 67, 7222-7230 (2011)
- Morphology, molecular dynamics and electric conductivity of carbohydrate polymer films based on alginic acid and benzimidazoleCarbohydrate Research 346, 2718-2726 (2011).
- A possible application of magnetic resonance imaging for pharmaceutical researchEuropean J. Pharm. Sciences 42, 354–364 (2011).
- Interaction of chlorobenzene with gelator in methyl-4,6-O-(p-nitrobenzylidene)-a-D-glucopyranoside gel probed by proton fast field cycling NMR relaxometryTetrahedron 67, 8170-8176 (2011).
- Effect of microwave irradiation on the hydroxypropyl methylcellulose powder and its hydrogel studied by Magnetic Resonance ImagingCarbohydrate Polymers 83, 166–170 (2011).
2010
- Electron spin resonance (ESR) and electron spin echo envelope modulation (ESEEM) studies on the ultramarine analogs obtained from zeolite A with various alkaline cations at different temperatures.Microporous and Mesoporous Materials 127, 205-212, 2010
- Evidence of Solvent-Gelator Interaction in Sugar-based Organogel Studied by Field-Cycling NMR Relaxometry.Langmuir, 26, 17459-17464, 2010. 32p
- Spectroscopic and photopolymerization studies of benzyl methacrylate/poly(benzyl methacrylate) two-component system.Journal of Polymer Science: part B-Polymer Physics, Vol. 48, 1336-1348, 2010
- Electronic structure and dynamics of low symmetry Cu2+ complexes in kainite-type crystal KZnClSO4: EPR and ESE studies.Journal of Magnetic Resonance 205, 293-202, 2010
- Electron spin relaxation of exchange coupled pairs of transition metal ions in solids. Ti2+ - Ti2+ pairs and single Ti2+ ions in SrF2 crystals.Journal of Magnetic Resonance 202, 14-23, 2010
- Sulfur pigments synthesized from zeolite LTA under vacuum and in air. XRD and spectroscopi (UV-vis, FTIR, Raman, ESR, ESE) characterization.Industrial and Engineering Chemistry Research 49, 8192-8199 (2010)
- Effect of microwave irradiation on the hydroxypropyl methylcellulose powder and its hydrogel studied by Magnetic Resonance Imaging, Carbohydrate Polymers.Carbohydrate Polymers 83, 166–170 (2010)
2009
- Characterization of 4,6-O-(p-nitrobenzylidene)-α-D-glucopyranoside hydrogels and water diffusion in their networks.Tetrahedron 65, 9801–9806 (2009)
- Spin-lattice relaxation study of the methyl proton dynamics in solid 9,10-dimethyltriptycene (DMT).Solid State Nuclear Magnetic Resonance 35, 194-200, 2009
- The crystal structure and evidence of the phase transition in D-amphetamine sulfate, as studied by X-ray crystallography, DSC and NMR spectroscopy.New Journal of Chemistry 33, 1894-1900, 2009
- Solvent effect on 1,2-O-(1-Ethylpropylidene)-α-D-glucofuranose organogel properties.Langmuir 25 (14), 8274-8279, 2009
- Structure and dynamics of S3- radicals in ultramarine-type pigment based on zeolite A: electron resonance and electron spin echo studies.The Journal of Chemical Physics 130, 204504, 2009
- 1H spin-lattice relaxation study of dynamical inequivalence of methyl groups in solod 1,2-0-(1-ethylpropylidene)-α-D-glucofuranose.Applied Magnetic Resonance 36, 61-68, 2009
2008
- 1,2-0-(1-Ethylpropylidene)-α-D-glucofuranose, a law molecular mass organogelator: benzene gel formation and their thermal stabilities.Tetrahedron Letters 49, 2008, 6685-6689
- Diffusive EPR line width behaviour in two-dimensional Cu(Hippurate)2∙4H2O single crystal.Solid State Communications 146, 372-375, 2008
- Electron spin relaxation and quantum localization in carbon nanoparticle: electron spin echo studies.Physical Review B 77, 014304, 2008
- Thermal properties of the gel made by low molecular weight gelator 1,2-0-(1-ethylpropylidene)-α-D-glucofuranose with toluene and molecular dynamics of solvent.Langmuir 24, 534-540, 2008
- The structural dynamics in the proton-conducting imidazolium oxalate.Journal of Physics: Condensed Matter 20, 505101, 2008
- Dynamics of CO2- radiation defects in natural calcite studied by ESR, electron spin echo and electron spin relaxation.Journal of Physics: Condensed Matter 20, 255237 (2008)
- Dynamical properties and instability of local fluorite BaF2 structure around doped Mn2+ ions – EPR and electron spin echo studies.Journal of Physics: Condensed Matter 20, 385208, 2008
- Fixation of copper(II)-protein formulation in wood: part 2. Molecular mechanism of fixation of copper(II) in cellulose, lignin and wood studied by EPR.Holzforschung Vol. 62, 300-308, 2008
- Fixation of copper(II)-protein formulation in wood: part 1. Influence of tannic acid on fixation of copper in wood.Holzforschung Vol. 62, 294-299, 2008
- Glass transition temperature and thermal decomposition of cellulose powder.Cellulose Vol. 15, N. 3, 445-451, 2008
- Molecular dynamics in a new solid glucofuranose-based low-molecular-weight organogelator as studied by 1H NMR.Applied Magnetic Resonance 34, 431-438, 2008
- 1H NMR relaxation studies of proton-conducting imidazolium salts of dicarboxylic acids.Applied Magnetic Resonance 34, 163-173, 2008
- Radiation-induced modification of P(VDF/TrFE) copolymers studied by ESR and vibrational spectroscopy.Applied Magnetic Resonance 34, 37-45, 2008
- NMR study of the molecular dynamics of D-amphetamine sulfate salt powder.Applied Magnetic Resonance 33, 439-446, 2008
2007
- Carbon mnoxide and oxygen interaction with Ru/MgF2 catalyst: IR and EPR studies.Research on Chemical Intermediates Vol. 33, No. 8-9, 841-851, 2007
- Molecular structure and dynamics of off-center Cu2+ ions and strongly coupled Cu2+-Cu2+ pairs in BaF2 crystals: electron paramagnetic resonance and electron spin relaxation studies.The Journal of Chemical Physics 127, 124705-1 do 124705-13, 2007
- Free radicals and their electron spin relaxation in cellobiose. X-band and W-band ESR and electron spin echo studies.Cellulose 14, 183-194, 2007
- The NMR study of the molecular dynamics of the D-Amphetamine sulfate salt powder.Applied Magnetic Resonance 33, 4, 439-446 (2007)
- Molecular dynamics in a new solid glucofuranose-based low molecular weight organogelator as studied by 1H NMR.Applied Magnetic Resonance 33, 4, 431-438 (2007)
2006
- How we can interpret the T1 dispersion of MC, HPMC and HPC polymers above glass temperature?Solid State Nucl. Magn. Reson. vol. 30, 3-4, 192-197, 2006
- Complex motion of X-ray induced NH+3 radical in Tutton salt (NH4)2Zn(SO4)2.6H2O single crystals observed by EPR and ESEEM spectroscopy.Molecular Physics, vol. 104, No. 15, 2006, 2423-2432
- The molecular origin of nuclear magnetic relaxation in methyl cellulose and hydroxypropylmethyl cellulose.Journal of Polymer Research 13, 201-206, 2006
- Electron spin echo of Cu2+ on the triglycine sulfate crystal family (TGS, TGSe, TGFB): electron spin-lattice relaxation, Debye temperature and spin-phonon coupling.Journal of Physics: Condensed Matter 18, 6159-6169, 2006
- Effects of lattice and local dynamics in EPR spectra and electron spin relaxation of vibronic Cu(imidazole)6 complexes in Zn(imidazole)6Cl2•4H20 crystals.Journal of Physics and Chemistry of Solids 76, 2614-2622, 2006
- Characterisation of the Ru/MgF2 catalyst with adsorbed O2, NO, CO probe molecules by EPR and IR spectroscopy.Journal of Physics ad Chemistry of Solids 67, 1387-1393, 2006
- Dielectric response of polymer relaxors.Journal of Materials Science 41, 117-127, 2006
- Effect of fast electron irradiation on the dielectric and pyroelectric response of radially-oriented PVDF film.IEEE Transations on Dielectrics and Electrical Insulation, vol. 13, No 5, 1155-1161 (2006)
- MRI study of Fickian, case II and anomalous diffusion of solvents ito hydroxypropylmethylcellulose.Applied Magnetic Resonance 29, 605-615, 2006
- Effect of Vibronic Dynamics of Cu(H2O)6 complex and electron spin relaxation in temperature dependence of EPR linewidh in diamagnetic Tutton salt single crystal.Acta Physica Polonica A, Vol. 110, No 6, 807-816, 2006
2005
- Copper monoethanolamine complexes with quaternary ammonium compounds in wood preservation, biological testing and EPR study.Wood Research 50 (2), 1-16, 2005
- Spatially Resolved Solvent Interaction with glassy HPMC polymers studied by magnetic resonance microscopy.Solid State Nucl. Magn. Resonance 28, 250-257, 2005
- The molecular origin of the nuclear magnetic relaxation in the methyl cellulose and hydroxypropylmethylcellulose.Journal of Polymer Research DOI: 1007/s10965-005-9026-6
- Crystal structure and EPR studies of (cinchonineH2)2(CdCl4)(Cd/CuCl4) crystals with thermochromic and Jahn-Teller effect.Journal of Molecular Structure 751, 109-120, 2005
- Magnetic resonance studies of cement based materials in inhomogeneous magnetic fields.Cement and Concrete Research 35, 2033-2040, 2005
- Temperature effects in ESR spectra of radical centres in dripstone calcite samples used for ESR dating.Acta Physica Polonica A Vol. 108, No. 3, 2005, 491-503
- EPR dating of hydroxyapatite from fossil bones. Transient effect after γ and UV irradiation.Acta Physica Polonica A, Vol. 108, No. 2, 331-337 (2005)
- Structure characterization and catalytic properties of Cr2O3 doped with MgO supported on MgF2.Acta Physica Polonica A, Vol. 108, No. 2, 323-330, 2005
- Binding of the trace elements: Cu(II) and Fe(III) to the native and modified nutritive potato starches studied by EPR.Acta Physica Polonica A, Vol. 108, No. 2, 303-310, 2005
- Hydration of hydroxypropylmethyl cellulose: effects of pH and molecular mass.Acta Physica Polonica A, Vol. 108, No. 1, 2005, 197-205
- Electron spin relaxation of Cu(II) ions in ZnGeF6·6H2O crystal with strong Jahn-Teller effect.Acta Physica Polonica A, Vol. 108, No. 1, 2005, 177-185
- Dielectric relaxation in cellulose and its derivatives.Acta Physica Polonica A, Vol. 108, No. 1, 2005, 137-145
- Melting behavior of water confined in nanopores of white cement studied by 1H NMR cryoporomentry: effect of antifreeze additive and temperature.Applied Magnetic Resonance 29, 639-653, 2005
- Influence of the grain size on polaron transport in nanostructured La2/3Ca1/3MnO3 evidenced by EPR.Acta Physica Polonica A, Vol. 108, No. 1, 2005, 113-118
- The role of ferric(III) oxide in poly-(1,4-Phenylene sulphide) curing. EPR and X-ray studies.Acta Physica Polonica A, Vol. 108, No. 1, 2005, 107-112
- ESR studies of fast electron irradiated ferroelectric poly (vinylidene fluoride)Acta Physica Polonica A, Vol. 108, No. 1, 2005, 89-94
- Gelation process of toluene-based bis-urea in cyclohexane studied with magnetic resonance imaging.Acta Physica Polonica A, Vol. 108, No. 1, 2005, 81-87