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Orszulak L, Lamrani T, Bernat R, Tarnacka M, Żakowiecki D, Jurkiewicz K, Zioła P, Mrozek-Wilczkiewicz A, Zięba A, Kamiński K, Kamińska E. The Influence of PVP Polymer Topology on the Liquid Crystalline Order of Itraconazole in Binary Systems. Mol Pharm 2024; 21:3027-3039. [PMID: 38755753 DOI: 10.1021/acs.molpharmaceut.4c00215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
This study presents a novel approach by utilizing poly(vinylpyrrolidone)s (PVPs) with various topologies as potential matrices for the liquid crystalline (LC) active pharmaceutical ingredient itraconazole (ITZ). We examined amorphous solid dispersions (ASDs) composed of ITZ and (i) self-synthesized linear PVP, (ii) self-synthesized star-shaped PVP, and (iii) commercial linear PVP K30. Differential scanning calorimetry, X-ray diffraction, and broad-band dielectric spectroscopy were employed to get a comprehensive insight into the thermal and structural properties, as well as global and local molecular dynamics of ITZ-PVP systems. The primary objective was to assess the influence of PVPs' topology and the composition of ASD on the LC ordering, changes in the temperature of transitions between mesophases, the rate of their restoration, and finally the solubility of ITZ in the prepared ASDs. Our research clearly showed that regardless of the PVP type, both LC transitions, from smectic (Sm) to nematic (N) and from N to isotropic (I) phases, are effectively suppressed. Moreover, a significant difference in the miscibility of different PVPs with the investigated API was found. This phenomenon also affected the solubility of API, which was the greatest, up to 100 μg/mL in the case of starPVP 85:15 w/w mixture in comparison to neat crystalline API (5 μg/mL). Obtained data emphasize the crucial role of the polymer's topology in designing new pharmaceutical formulations.
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Affiliation(s)
- Luiza Orszulak
- Institute of Chemistry, Faculty of Science and Technology, University of Silesia in Katowice, Szkolna 9, 40-007 Katowice, Poland
| | - Taoufik Lamrani
- Institute of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Roksana Bernat
- Department of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellonska 4, 41-200 Sosnowiec, Poland
- Institute of Materials Engineering, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Magdalena Tarnacka
- Institute of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Daniel Żakowiecki
- Chemische Fabrik Budenheim KG, Rheinstrasse 27, 55257 Budenheim, Germany
| | - Karolina Jurkiewicz
- Institute of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Patryk Zioła
- Institute of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Anna Mrozek-Wilczkiewicz
- Institute of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
- Biotechnology Centre, Silesian University of Technology, Boleslawa Krzywoustego 8, 44-100 Gliwice, Poland
| | - Andrzej Zięba
- Department of Organic Chemistry, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia in Katowice, Jagiellonska 4, 41-200 Sosnowiec, Poland
| | - Kamil Kamiński
- Institute of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Ewa Kamińska
- Department of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellonska 4, 41-200 Sosnowiec, Poland
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Hellwig H, Nowok A, Peksa P, Dulski M, Musioł R, Pawlus S, Kuś P. Molecular Dynamics and Near- Tg Phenomena of Cyclic Thioethers. Int J Mol Sci 2023; 24:17166. [PMID: 38138995 PMCID: PMC10742681 DOI: 10.3390/ijms242417166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/20/2023] [Accepted: 12/02/2023] [Indexed: 12/24/2023] Open
Abstract
This article presents the synthesis and molecular dynamics investigation of three novel cyclic thioethers: 2,3-(4'-methylbenzo)-1,4,7,10-tetrathiacyclododeca-2-ene (compound 1), 2,3,14,15-bis(4',4″(5″)-methylbenzo)-1,4,7,10,13,16,19,22,25-octathiacyclotetracosa-2,14-diene (compound 2), and 2,3,8,9-bis(4',4″(5″)-methylbenzo)-1,4,7,10-tetrathiacyclododeca-2,8-diene (compound 3). The compounds exhibit relatively high glass transition temperatures (Tg), which range between 254 and 283 K. This characteristic positions them within the so-far limited category of crown-like glass-formers. We demonstrate that cyclic thioethers may span both the realms of ordinary and sizeable molecular glass-formers, each featuring distinct physical properties. Furthermore, we show that the Tg follows a sublinear power law as a function of the molar mass within this class of compounds. We also reveal multiple dielectric relaxation processes of the novel cyclic thioethers. Above the Tg, their dielectric loss spectra are dominated by a structural relaxation, which originates from the cooperative reorientation of entire molecules and exhibits an excess wing on its high-frequency slope. This feature has been attributed to the Johari-Goldstein (JG) process. Each investigated compound exhibits also at least one intramolecular secondary non-JG relaxation stemming from conformational changes. Their activation energies range from approximately 19 kJ/mol to roughly 40 kJ/mol. Finally, we analyze the high-pressure molecular dynamics of compound 1, revealing a pressure-induced increase in its Tg with a dTg/dp coefficient equal to 197 ± 8 K/GPa.
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Affiliation(s)
- Hubert Hellwig
- Center for Integrated Technology and Organic Synthesis (CiTOS), MolSys Research Unit, University of Liège, B6a, Room 3/19, Allée du Six Août 13, 4000 Liege, Belgium;
| | - Andrzej Nowok
- Department of Experimental Physics, Wrocław University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland; (A.N.); (P.P.)
| | - Paulina Peksa
- Department of Experimental Physics, Wrocław University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland; (A.N.); (P.P.)
| | - Mateusz Dulski
- Faculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland;
| | - Robert Musioł
- Institute of Chemistry, University of Silesia in Katowice, Szkolna 9, 40-003 Katowice, Poland;
| | - Sebastian Pawlus
- August Chełkowski Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland;
| | - Piotr Kuś
- Institute of Chemistry, University of Silesia in Katowice, Szkolna 9, 40-003 Katowice, Poland;
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Simple Rules for Complex Near-Glass-Transition Phenomena in Medium-Sized Schiff Bases. Int J Mol Sci 2022; 23:ijms23095185. [PMID: 35563574 PMCID: PMC9103181 DOI: 10.3390/ijms23095185] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/01/2022] [Accepted: 05/03/2022] [Indexed: 02/04/2023] Open
Abstract
Glass-forming ability is one of the most desired properties of organic compounds dedicated to optoelectronic applications. Therefore, finding general structure–property relationships and other rules governing vitrification and related near-glass-transition phenomena is a burning issue for numerous compound families, such as Schiff bases. Hence, we employ differential scanning calorimetry, broadband dielectric spectroscopy, X-ray diffraction and quantum density functional theory calculations to investigate near-glass-transition phenomena, as well as ambient- and high-pressure molecular dynamics for two structurally related Schiff bases belonging to the family of glycine imino esters. Firstly, the surprising great stability of the supercooled liquid phase is shown for these compounds, also under high-pressure conditions. Secondly, atypical self-organization via bifurcated hydrogen bonds into lasting centrosymmetric dimers is proven. Finally, by comparing the obtained results with the previous report, some general rules that govern ambient- and high-pressure molecular dynamics and near-glass transition phenomena are derived for the family of glycine imino esters. Particularly, we derive a mathematical formula to predict and tune their glass transition temperature (Tg) and its pressure coefficient (dTg/dp). We also show that, surprisingly, despite the presence of intra- and intermolecular hydrogen bonds, van der Waals and dipole–dipole interactions are the main forces governing molecular dynamics and dielectric properties of glycine imino esters.
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Rams-Baron M, Musial M, Kramarczyk D, Paluch M. Insight from high-pressure dielectric studies into molecular dynamics of the itraconazole-glycerol mixture in smectic and isotropic phases. J Chem Phys 2022; 156:154501. [DOI: 10.1063/5.0080726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present here the results of high-pressure broadband dielectric spectroscopy (BDS) measurements for a mixture of liquid-crystalline drug itraconazole (ITZ) and glycerol (GLY) at a critical concentration of 5% w/w in which the nematic order is eliminated. In the investigated system, smectic-A to isotropic phase transition leaves a clear fingerprint on the dielectric response allowing a phase diagram creation using BDS data. By following the α-relaxation dynamics under different thermodynamic conditions, we provide insight into the effect of pressure on temperature and the phenomenology of the smectic-A to the isotropic phase transition. Additional measurements of specific volume as a function of pressure and temperature provide us with deeper insight into material properties that could be analyzed comprehensively via the equation of state. We proved the validity of the density scaling concept showing that the mixture's complexity does not exclude thermodynamic scaling of dynamic properties related to the α-process in the smectic-A phase. The low value of scaling exponent γ = 2.00 {plus minus} 0.02 and a high ratio of the activation energy at constant volume, EV, to the activation enthalpy at constant pressure, HP, indicate that temperature is a dominant variable controlling α-relaxation dynamics in the ordered smectic-A phase of ITZ-GLY mixture.
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Affiliation(s)
- Marzena Rams-Baron
- Institute of Physics, University of Silesia in Katowice Institute of Physics, Poland
| | | | - Daniel Kramarczyk
- University of Silesia in Katowice Institute of Physics named after August Chelkowski, Poland
| | - Marian Paluch
- Biophysics and Molecular Physics Department, Silesian Center for Education and Interdisciplinary Research, Poland
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Heczko D, Kamińska E, Tarnacka M, Jurkiewicz K, Dulski M, Bębenek A, Garbacz G, Kamiński K, Paluch M. Varying thermodynamic conditions as a new way to tune the molecular order in glassy itraconazole. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.110920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Koperwas K, Grzybowski A, Tripathy SN, Masiewicz E, Paluch M. Thermodynamic consequences of the kinetic nature of the glass transition. Sci Rep 2015; 5:17782. [PMID: 26657017 PMCID: PMC4674716 DOI: 10.1038/srep17782] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 11/03/2015] [Indexed: 01/18/2023] Open
Abstract
In this paper, we consider the glass transition as a kinetic process and establish one universal equation for the pressure coefficient of the glass transition temperature, dTg/dp, which is a thermodynamic characteristic of this process. Our findings challenge the common previous expectations concerning key characteristics of the transformation from the liquid to the glassy state, because it suggests that without employing an additional condition, met in the glass transition, derivation of the two independent equations for dTg/dp is not possible. Hence, the relation among the thermodynamic coefficients, which could be equivalent to the well-known Prigogine-Defay ratio for the process under consideration, cannot be obtained. Besides, by comparing the predictions of our universal equation for dTg/dp and Ehrenfest equations, we find the aforementioned supplementary restriction, which must be met to use the Prigogine-Defay ratio for the glass transition.
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Affiliation(s)
- Kajetan Koperwas
- Institute of Physics, University of Silesia, Uniwersytecka
4, 40-007
Katowice, Poland
- Silesian Center for Education and Interdisciplinary
Research, 75 Pulku Piechoty 1A, 41-500
Chorzow, Poland
| | - Andrzej Grzybowski
- Institute of Physics, University of Silesia, Uniwersytecka
4, 40-007
Katowice, Poland
- Silesian Center for Education and Interdisciplinary
Research, 75 Pulku Piechoty 1A, 41-500
Chorzow, Poland
| | - Satya N. Tripathy
- Institute of Physics, University of Silesia, Uniwersytecka
4, 40-007
Katowice, Poland
- Silesian Center for Education and Interdisciplinary
Research, 75 Pulku Piechoty 1A, 41-500
Chorzow, Poland
| | - Elzbieta Masiewicz
- Institute of Physics, University of Silesia, Uniwersytecka
4, 40-007
Katowice, Poland
- Silesian Center for Education and Interdisciplinary
Research, 75 Pulku Piechoty 1A, 41-500
Chorzow, Poland
| | - Marian Paluch
- Institute of Physics, University of Silesia, Uniwersytecka
4, 40-007
Katowice, Poland
- Silesian Center for Education and Interdisciplinary
Research, 75 Pulku Piechoty 1A, 41-500
Chorzow, Poland
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