Dr
Malgorzata Jasiurkowska-Delaporte
(NanoBioMedical Center, Adam Mickiewicz University, Poznań, Poland)
07/07/2015, 18:30
soft matter and glassformers
Dielectric properties and morphology of nanocomposites based on poly(2-vinylpyridine-co-styrene) (P2V-S) as a matrix and multiwall carbon nanoubes (MWCNTs) as nanofillers are investigated. Nanotube-polymer interactions are evaluated by Raman and Fourier Transform Infrared Spectroscopy (FTIR). The molecular dynamics is investigated in the wide frequency (10-2-10-6 Hz) and temperature range by...
Ms
Dominika Kuźma
(Institute of Nuclear Physics PAN, Kraków)
07/07/2015, 18:30
Surfaces and interfaces are waveguides for some kinds of waves. The Stoneley wave occurs on the interface of perfectly bonded isotropic elastic materials [1]. The kind of waves are of importance e.g in geoscience [2] and in the design of delay lines in acoustical waveguides [3]. Whereas the surface Rayleigh wave exists on all free surfaces of elastic media, the range of existence of the...
Dr
Łukasz Kolek
(Department of Materials Sciences, Rzeszów University of Technology, Poland)
07/07/2015, 18:30
For 1-[3-fluoro-4-(1-methylheptyloxycarbonyl)phenyl]-2-[4’-2,2,3,3,4,4,4-heptafluoro butoxybutoxy)biphenyl -4-yl]ethane (1F7) built of chiral molecules, intra- and intermolecular dynamics is presented. Intermolecular dynamics was studied by dielectric spectroscopy while intramolecular dynamics by nuclear magnetic resonance and infrared spectroscopy. In ferroelectric SmC*, antiferroelectric...
Marta Podruczna
(Faculty of Chemistry, University of Wroclaw)
07/07/2015, 18:30
Contemporary LCD industry is still looking for new materials with very specific physical properties. The azobenzene moiety is very comfortable fragment in designing and synthesis of new structures, giving stable mesophase often with very interesting polymorphism. Additional useful property of azobenzenes for modern optics is their photosensitivity, which allows to design materials...
Mr
Marcin Majka
(Institute of Nuclear Physics PAN, Kraków)
07/07/2015, 18:30
Any acoustic signal extinguishes progressively due to multiple reflections from the walls and different objects in the room. The effect is called reverberation. The reverberation time may affect significantly the intelligibility of speech and music [1]. Numerical and electronic sound synthesis allows one to model the reverberation by the convolution of the signal with the appropriate impulse...
Ms
Izabela Niezgoda
(Faculty of Chemistry, University of Wroclaw, Poland)
07/07/2015, 18:30
Liquid crystals containing azo moiety are extensively studied group of compounds. Main reason of this situation are their interesting physicochemical as well as optical properties. An important role in the azobenzene derivatives studies plays the photosensitivity [1], through which the trans-cis-trans isomerization of -N=N- group is possible. Highly developed optoelectronic industry is looking...
Ms
Liya Khadeeva
(Insitute of Physics of Rennes, University of Rennes 1)
07/07/2015, 18:30
multifunctional materials
By means of visible absorption spectroscopy and X-Ray diffraction the photo-switching between the ground state nitrosyl (GS), isonitrosyl (SI) and side-on (SII) configurations under continuous light irradiation is studied in the [Ru(py)4Cl(NO)](PF6)2∙1/2H2O system [1]. It is a remarkable model compound in the family of systems containing...
Dr
Claudia Forte
(ICCOM-CNR, Pisa)
07/07/2015, 18:30
Polymer nano-composites represent a class of materials of great interest for many practical applications. In particular, polyvinyl butyral (PVB) is used in automotive and architectural applications for laminated safety glasses thanks to its high binding efficiency, optical clarity, and good adhesion to several different surfaces. Furthermore, its use as a polymer matrix in nanocomposite...
Dr
Ewa Juszyńska-Gałązka
(Institute of Nuclear Physics PAN, Kraków)
07/07/2015, 18:30
4-n-heptyl-2’,3’-difluoro-4’-undecyloxybiphenyl (4HFDB) and 4-n-heptyl-2’,3’-difluoro-4’-nonyloxybiphenyl (4HFNB) are liquid crystalline compounds of chemical formula C7H15-C6H4-C6H2F2-O-C11H23 and...
Dr
Ewa Juszyńska-Gałązka
(Institute of Nuclear Physics PAN, Kraków)
07/07/2015, 18:30
3,3-dimethylbutan-2-ol, 2,3-dimethylbutan-2-ol, are two of seventeen isomers of hexanol of the same chemical formula C6H13OH differing in physical properties. These are interesting representatives of a class of soft matter functional materials being isomeric varieties. The structure of hexanol globular molecule, strongly influencing their intermolecular interactions,...
Mr
Paweł Sobieszczyk
(Institute of Nuclear Physics PAN, Kraków)
07/07/2015, 18:30
When encountering a mismatch of characteristic impedance a bulk acoustic wave transforms into up to three reflected and refracted waves of different polarizations. The effect is known as mode conversion [1]. The lack of the specularly reflected wave is called total mode conversion because then all the outgoing waves propagate at speeds different than that of the incident one. Conversely, if...
Aleksandra Deptuch
(Institute of Physics, Jagiellonian University, Kraków)
07/07/2015, 18:30
Compounds from the homologous series of 4-n-pentylphenyl-4’-n-alkiloxybenzoates CnH2n+1-O-C6H6-COS-C6H6-C5H11, denoted as nOS5, known of creating liquid crystalline phases, are the subject of our recent studies. Some results for crystalline and liquid crystalline phases of...
Ms
Anna Hoczek
(Faculty of Chemistry, Jagiellonian University, Kraków)
07/07/2015, 20:30
Ligands decide about crystal structure of the coordination materials and in many cases could be a key factor in achieving, tuning and controlling the target properties. Several important features of their molecular structure and electronic structure can be preprogrammed at the very first stage of synthetic procedure. This can be done by the selection of (i) type, number, and spatial...
Mr
Mateusz Reczyński
(Faculty of Chemistry, Jagiellonian University, Kraków)
07/07/2015, 20:30
The [NiII(cyclam)]2+ complex (cyclam = 1,4,8,11-tetraazacyclotetradecane) has been widely employed as a building block in the construction of bimetallic assemblies and afforded several structurally dynamic guest-sensitive CN-bridged molecular magnets [1,2]. This complex can be easily oxidised to the relatively stable [NiIII(cyclam)]3+ unit (s = ½)...
Mr
Mirosław Arczyński
(Faculty of Chemistry, Jagiellonian University, Kraków)
07/07/2015, 20:30
Since their discovery Prussian Blue Analogs (PBAs) have become a driving force for many fruitful discoveries on the route to control the quantum nanoworld [1]. For example study of CoII-FeIII(CN)6 PBAs resulted in the burst of interest because of its nonmagnetic to magnetic photo-induced transition. Along with the miniaturization tendencies and in connection...
Ms
Gabriela Handzlik
(Faculty of Chemistry, Jagiellonian University, Kraków)
07/07/2015, 20:30
In our contribution we describe syntheses, single-crystal X-ray crystallographic structures and magnetic properties of a new family of cyanide-bridged coordination polymers {(NH4)[(H2O)MnII-(μ-L)-MnII(H2O)] [NbIV(CN)8].xH2O}n MnNbL with supporting ligands L = cyanide, formate, acetate and...
Mr
Michał Magott
(Faculty of Chemistry, Jagiellonian University, Kraków)
07/07/2015, 20:30
We have synthesized two new coordination chain compounds consisting of manganese(II), 2,2'-bipyridyl and octacyanoniobate(IV), both of them exhibiting ferromagnetic ordering. The first one [MnII(bpy)(H2O)2]2[Nb(CN)8]•5H2O 1 is isostructural with the manganese-octacyanotungstate vertex-sharing squares chain already...
Mr
Ryo Yoshimoto
(Department of Chemistry, Graduate School of Science, Osaka University)
07/07/2015, 20:30
In this work, we measured heat capacities of bi-layer Mott insulators X[Ni(dmit)2]2 (X = Et-4BrT, Et-2I-5BrP, Et-2,5-DBrP) under magnetic fields in order to clarify the low temperature magnetic properties. X[Ni(dmit)2]2 forms low dimensional electronic structure based on the segregated stacking of Ni(dmit)2 molecules and their counter...
Prof.
Maria Bałanda
(Institute of Nuclear Physics PAN, Kraków)
07/07/2015, 20:30
molecular magnets and nanomagnets
poster presentation
One of the possible applications of magnetic molecular clusters is using them for magnetic refrigeration in the low and ultra-low temperature range. Due to the high spin values S shown by some molecules, the total molar magnetic entropy Smax=Rln(2S+1) (R is a gas constant) is large and the isothermal entropy change ∆S on the change of...
Mr
Marcin Gajewski
(Institute of Nuclear Physics PAN, Kraków)
07/07/2015, 20:30
poster presentation
One of the strategies to obtain new magnetic materials displaying substantial magnetocaloric effect is to tailor molecular magnetic materials with high spin ground state. Following this course of research a new family of coordination compounds based on Ni(II) and W(V) ions with a general formula Ni[Ni(L)(solv)]8[W(CN)8]6, where L=2,2’-bipyridine (1),...
Dr
Robert PEŁKA
(Institute of Nuclear Physics PAN, Kraków)
07/07/2015, 20:30
Magnetocaloric effect for {[Mn(II)(pyrazole)4]2[Nb(IV)(CN)8]∙4H2O}n1), {Mn(II)2(imH)2(H2O)4[Nb(IV)(CN)8] ∙4H2O}n (2) and [Nb(IV){(μ-CN)4Mn(II)(H2O)2}2∙4H2O]n (3) is reported....
Dr
Lukasz Laskowski
(Czestochowa University of Technology, Poland)
07/07/2015, 20:30
The paper considers mesoporous silica SBA-15 containing propyl-iron phosphate groups. This compound has been studied to examine efficiency of the synthesis route. Mössbauer spectroscopy has shown that iron has been successfully connected to propyl-phosphate groups incorporated in the silica matrix. Nevertheless Energy Disspersive X-Ray analysis (EDX) has indicated that amount of the iron ions...
Mr
Michał Heczko
(Faculty of Chemistry, Jagiellonian University, Kraków)
07/07/2015, 20:30
molecular magnets and nanomagnets
poster presentation
The combination of [Ni(cyclam)]2+ (cyclam = 1,4,8,11-tetraazacyclotetradecane) with [Nb(CN)8]4- has been described earlier [1]. The compound exhibits 3D diamond-like network topology and long range magnetic ordering, whose characteristics depend on the amount of crystallisation water. The experiments has shown that after dehydration the original phase cannot be...
Dr
Tomasz Korzeniak
(Faculty of Chemistry, Jagiellonian University, Kraków)
07/07/2015, 20:30
The molecular systems based on [MV(CN)8]3–/4– (M=Mo, W) have attracted great attention over last years, mainly due to the formation of many interesting magnetic systems [1]. The charge-transfer phenomena in cyanido-bridged molecular systems allows for the control of magnetic bistability, leading to potential functional materials. The diamagnetic...
Prof.
Zbigniew Tomkowicz
(Institute of Physics, Jagiellonian University, Kraków)
07/07/2015, 20:30
In the crystal structure of [Co(NCS)2(4-(4-chlorobenzyl) pyridine)2]n (abbr. ClBP) the Co(II) cations are octahedrally coordinated by two terminal ClBP ligands and four thiocyanato anions and are linked into ferromagnetic chains by pairs of µ-1,3-bridging thiocyanato anions. Due to small antiferromagnetic interchain interactions the compound is antiferromagnet...
Dr
Sujit Sasmal
(Faculty of Chemistry, Jagiellonian University, Kraków)
07/07/2015, 20:30
In molecular magnetism, the use of [M(CN)8]n– (M= Mo, W; n=3, 4) ions as building block for the generation of cyanido bridged coordination polymers is growing rapidly due to their potential functionalities [1]. In the paramagnetic [M(CN)8]n– (M= Mo, W; n=3] ions the metal centre provides more diffuse single occupied orbital which causes stronger...
Mr
Shusaku Imajo
(Department of Chemistry, Graduate School of Science, Osaka University)
07/07/2015, 20:30
molecular magnets and nanomagnets
Unconventional superconductivity has been a challenging subject to study in condensed matter science. The pairing of electrons in conventional superconductors can be explained by a weak attractive force by means of the electron-phonon coupling known as the BCS mechanism. However the mechanisms of many unconventional superconductors are still open questions. In this study, we investigated an...
Ms
Yuki Kawata
(Department of Chemistry, University of Tsukuba ; Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST))
07/07/2015, 20:30
soft matter and glassformers
A liquid-crystalline physical gel formed by the fibrous aggregation of gelators in liquid crystals (LCs) have been recognized as a new class of soft materials and extensively investigated.1 A particle/LC composite gel is a kind of liquid-crystalline physical gels in which particles act as the gelator. Recently, we have reported the viscoelastic properties and photoinduced gel–sol...
Mr
Wojciech Nogaś
(Faculty of Chemistry, Jagiellonian University, Kraków)
07/07/2015, 20:30
Pentadecanuclear {MII9[M’V(CN)8]6Lx(solv)y} (M - paramagnetic 3d cation, M’ – paramagnetic Mo, W centers, L – chelating and bridging ligands) high-spin clusters are of scientific interest because of magnetic properties, notably slow magnetic relaxation and single molecule magnet behavior, magnetocaloric effect, and...
Mr
Bernard Czarnecki
(Faculty of Chemistry, Jagiellonian University, Kraków)
07/07/2015, 20:30
Over the recent years an intensive research provided examples of synthesis of heterometalic molecular materials with paramagnetic [M(CN)8]n− (M = NbIV, MoIV,V, WIV,V) ions, 3d metal ions and organic ligands. Such assemblies [1,2] proves the great potential for applications of cyano-bridged coordination networks and in the future this...
