1
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Liu X, Li X, Wang J, Feng S, Wang LM. Unveiling the strong dependence of the α-relaxation dispersion on mixing thermodynamics in binary glass-forming liquids. Phys Chem Chem Phys 2021; 23:5644-5651. [PMID: 33656027 DOI: 10.1039/d0cp06358d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structural α-relaxation dispersion in binary molecular glass forming mixtures with distinct mixing enthalpy ΔHmix was investigated using enthalpic and dielectric relaxation measurements across the entire composition range. This study focused on the dependence of the relaxation dispersion on the mixing thermodynamics by determining the non-exponential exponent β, and its composition dependence. The β values determined by the enthalpic and dielectric relaxations agree well. Remarkably, it is found that the systems with positive enthalpy of mixing (exothermic, ΔHmix >0) have positive deviations in the composition dependence of β from the linear averaging of the two β values of the pure components, while negative deviations are observed for the systems with negative enthalpy of mixing (endothermic, ΔHmix <0). Furthermore, the relation between the non-exponential behaviors and entropy of mixing is discussed, revealing that the positive or negative deviation of β in its composition dependence on mixing is accompanied by the same sign of the excess entropy of mixing relative to the ideal one.
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Affiliation(s)
- Xin Liu
- State Key Lab of Metastable Materials Science and Technology, and School of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China.
| | - Xudong Li
- State Key Lab of Metastable Materials Science and Technology, and School of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China.
| | - Ji Wang
- State Key Lab of Metastable Materials Science and Technology, and School of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China.
| | - Shidong Feng
- State Key Lab of Metastable Materials Science and Technology, and School of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China.
| | - Li-Min Wang
- State Key Lab of Metastable Materials Science and Technology, and School of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China.
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2
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Guo Y, Jin X, Wang LM. Unusual Debye relaxation in 4-methyl-2-pentanol evidenced by high-pressure dielectric studies. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:025401. [PMID: 33052889 DOI: 10.1088/1361-648x/abb742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The Debye relaxation is the main signal in the dielectric measurements of monoalcohols arising from the hydrogen-bonded superstructures, but its physics remains to be cleared. In this work, a monoalcohol of 4-methyl-2-pentanol is studied using dielectric spectroscopies recorded at high pressures. The dynamic parameters of the Debye and structural relaxations are extracted. The calculation of the Kirkwood factor of the Debye relaxation indicates chain-like H-bond molecular configurations. Remarkably, we found that both ratios of the relaxation strength and relaxation time between the Debye and structural dynamics, Δε D/Δε α and τ D/τ α , decreases upon compression, indicating a positive correlation. This is different from the results reported in primary 2-ethyl-1-hexanol and secondary 4-methyl-3-heptanol, where the two ratios are inversely correlated. The discussion and interpretation of these different results are provided.
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Affiliation(s)
- Yuxing Guo
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei, 066004 People's Republic of China
| | - Xiao Jin
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei, 066004 People's Republic of China
| | - Li-Min Wang
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei, 066004 People's Republic of China
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3
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Ruiz GN, Combarro-Palacios I, McLain SE, Schwartz GA, Pardo LC, Cerveny S, Macovez R. Tuning molecular dynamics by hydration and confinement: antiplasticizing effect of water in hydrated prilocaine nanoclusters. Phys Chem Chem Phys 2019; 21:15576-15583. [PMID: 31267115 DOI: 10.1039/c9cp01771b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In glass-forming substances, the addition of water tends to produce the effect of lowering the glass transition temperature, Tg. In a previous work by some of us (Ruiz et al., Sci. Rep., 2017, 7, 7470) we reported on a rare anti-plasticizing effect of water on the molecular dynamics of a simple molecular system, the pharmaceutically active prilocaine molecule, for which the addition of water leads to an increase of Tg. In the present work, we study pure and hydrated prilocaine confined in 0.5 nm and 1 nm pore size molecular sieves, and carry out a comparison with the bulk compounds in order to gain a better understanding of the microscopic mechanisms that result in this rare effect. We find that the Tg of the drug under nanometric confinement can be lower than the bulk value by as much as 17 K. Through the concurrent use of differential scanning calorimetry and broadband dielectric spectroscopy we are able to observe the antiplasticizing effect of water in prilocaine also under nanometric confinement, finding an increase of Tg of up to almost 6 K upon hydration. The extension of our analysis to nanoconfined systems provides a plausible explanation for the very uncommon antiplasticizing effect, based on the formation of water-prilocaine molecular complexes. Moreover, this study deepens the understanding of the behavior of drugs under confinement, which is of relevance not only from a fundamental point of view, but also for practical applications such as drug delivery.
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Affiliation(s)
- G N Ruiz
- Grup de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain. and Centro de Física de Materiales, (CSIC-UPV/EHU)-Material Physics Centre (MPC), Paseo Manuel de Lardizabal 5 (20018), San Sebastián, Spain
| | - I Combarro-Palacios
- Centro de Física de Materiales, (CSIC-UPV/EHU)-Material Physics Centre (MPC), Paseo Manuel de Lardizabal 5 (20018), San Sebastián, Spain
| | - S E McLain
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK and Department of Chemistry, University of Sussex, Falmer, Brighton BN1 9RH, UK
| | - G A Schwartz
- Centro de Física de Materiales, (CSIC-UPV/EHU)-Material Physics Centre (MPC), Paseo Manuel de Lardizabal 5 (20018), San Sebastián, Spain
| | - L C Pardo
- Grup de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain.
| | - S Cerveny
- Centro de Física de Materiales, (CSIC-UPV/EHU)-Material Physics Centre (MPC), Paseo Manuel de Lardizabal 5 (20018), San Sebastián, Spain
| | - R Macovez
- Grup de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain.
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4
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Honorio G, Bierwirth SP, Gainaru C, Böhmer R. Nonlinear electrical and rheological spectroscopies identify structural and supramolecular relaxations in a model peptide. SOFT MATTER 2019; 15:4334-4345. [PMID: 31073564 DOI: 10.1039/c9sm00434c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Supercooled liquid secondary amides display an electrical absorption peak characterized by an almost Debye-like shape, indicative of a close-to-exponential polarization response. This response, believed to be supramolecular in nature, is so enormously intense that the amide's structural process, contributing only a few percent to the total relaxation strength, is hard to resolve reliably using standard dielectric spectroscopy. To overcome this issue, nonlinear dielectric spectroscopy involving field-induced structural recovery and temperature-induced physical aging, was applied near the calorimetric glass transition of a mixture of N-methylformamide and N-ethylacetamide. Without the need to rely on cumbersome deconvolution procedures, it is thus demonstrated that the supramolecular response is by a factor of 6 slower than the structural relaxation. Conversely, in linear rheological experiments only the structural relaxation could be resolved, but not the supramolecular one. However, medium-amplitude oscillatory shear experiments carried out at 160 K do reveal the supramolecular process. Hence, the combination of linear and nonlinear mechanical measurements corroborates the dielectrically uncovered spectral separation of the two processes.
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Affiliation(s)
- Gabriel Honorio
- Fakultät Physik, Technische Universität Dortmund, 44221 Dortmund, Germany
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5
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Beasley MS, Tylinski M, Chua YZ, Schick C, Ediger MD. Glasses of three alkyl phosphates show a range of kinetic stabilities when prepared by physical vapor deposition. J Chem Phys 2018; 148:174503. [DOI: 10.1063/1.5026505] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M. S. Beasley
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - M. Tylinski
- Department of Chemistry, Widener University, Chester, Pennsylvania 19013, USA
| | - Y. Z. Chua
- Institute of Physics, University of Rostock, Albert-Einstein-Str. 23-24, 18051 Rostock, Germany and Competence Center CALOR, Faculty of Interdisciplinary Research, University of Rostock, Albert-Einstein-Str. 25, 18051 Rostock, Germany
| | - C. Schick
- Institute of Physics, University of Rostock, Albert-Einstein-Str. 23-24, 18051 Rostock, Germany and Competence Center CALOR, Faculty of Interdisciplinary Research, University of Rostock, Albert-Einstein-Str. 25, 18051 Rostock, Germany
| | - M. D. Ediger
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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6
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Wu T, Jin X, Saini MK, Liu YD, Ngai KL, Wang LM. Presence of global and local α-relaxations in an alkyl phosphate glass former. J Chem Phys 2017; 147:134501. [DOI: 10.1063/1.4994868] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Tao Wu
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004 China
| | - Xiao Jin
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004 China
| | - Manoj K. Saini
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004 China
| | - Ying Dan Liu
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004 China
| | - K. L. Ngai
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004 China
- CNR-IPCF, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - Li-Min Wang
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004 China
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7
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Ruiz GN, Romanini M, Hauptmann A, Loerting T, Shalaev E, Tamarit JL, Pardo LC, Macovez R. Genuine antiplasticizing effect of water on a glass-former drug. Sci Rep 2017; 7:7470. [PMID: 28785030 PMCID: PMC5547059 DOI: 10.1038/s41598-017-07643-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 06/30/2017] [Indexed: 01/04/2023] Open
Abstract
Water is the most important plasticizer of biological and organic hydrophilic materials, which generally exhibit enhanced mechanical softness and molecular mobility upon hydration. The enhancement of the molecular dynamics upon mixing with water, which in glass-forming systems implies a lower glass transition temperature (Tg), is considered a universal result of hydration. In fact, even in the cases where hydration or humidification of an organic glass-forming sample result in stiffer mechanical properties, the molecular mobility of the sample almost always increases with increasing water content, and its Tg decreases correspondingly. Here, we present an experimental report of a genuine antiplasticizing effect of water on the molecular dynamics of a small-molecule glass former. In detail, we show that addition of water to prilocaine, an active pharmaceutical ingredient, has the same effect as that of an applied pressure, namely, a decrease in mobility and an increase of Tg. We assign the antiplasticizing effect to the formation of prilocaine-H2O dimers or complexes with enhanced hydrogen bonding interactions.
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Affiliation(s)
- Guadalupe N Ruiz
- Grup de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, E-08019, Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Av. Eduard Maristany 10-14, E-08019, Barcelona, Spain
| | - Michela Romanini
- Grup de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, E-08019, Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Av. Eduard Maristany 10-14, E-08019, Barcelona, Spain
| | - Astrid Hauptmann
- Institute of Physical Chemistry, University of Innsbruck, Innrain 52c, 6020, Innsbruck, Austria
| | - Thomas Loerting
- Institute of Physical Chemistry, University of Innsbruck, Innrain 52c, 6020, Innsbruck, Austria
| | | | - Josep Ll Tamarit
- Grup de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, E-08019, Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Av. Eduard Maristany 10-14, E-08019, Barcelona, Spain
| | - Luis C Pardo
- Grup de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, E-08019, Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Av. Eduard Maristany 10-14, E-08019, Barcelona, Spain
| | - Roberto Macovez
- Grup de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, E-08019, Barcelona, Spain. .,Barcelona Research Center in Multiscale Science and Engineering, Av. Eduard Maristany 10-14, E-08019, Barcelona, Spain.
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8
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Wang M, Li X, Guo Y, Wu T, Liu YD, Ngai KL, Wang LM. A new secondary relaxation in the rigid and planar 1-methylindole: Evidence from binary mixture studies. J Chem Phys 2016; 145:214501. [DOI: 10.1063/1.4968564] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Meng Wang
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Xiangqian Li
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Yuxing Guo
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Tao Wu
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Ying Dan Liu
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - K. L. Ngai
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
- CNR-IPCF, Largo B. Pontecorvo 3, Pisa I-56127, Italy
| | - Li-Min Wang
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
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9
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Tu W, Li X, Chen Z, Liu YD, Labardi M, Capaccioli S, Paluch M, Wang LM. Glass formability in medium-sized molecular systems/pharmaceuticals. I. Thermodynamics vs. kinetics. J Chem Phys 2016; 144:174502. [PMID: 27155640 DOI: 10.1063/1.4947476] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Scrutinizing critical thermodynamic and kinetic factors for glass formation and the glass stability of materials would benefit the screening of the glass formers for the industry of glassy materials. The present work aims at elucidating the factors that contribute to the glass formation by investigating medium-sized molecules of pharmaceuticals. Glass transition related thermodynamics and kinetics are performed on the pharmaceuticals using calorimetric, dielectric, and viscosity measurements. The characteristic thermodynamic and kinetic parameters of glass transition are found to reproduce the relations established for small-molecule glass formers. The systematic comparison of the thermodynamic and kinetic contributions to glass formation reveals that the melting-point viscosity is the crucial quantity for the glass formation. Of more interest is the finding of a rough correlation between the melting-point viscosity and the entropy of fusion normalized by the number of beads of the pharmaceuticals, suggesting the thermodynamics can partly manifest its contribution to glass formation via kinetics.
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Affiliation(s)
- Wenkang Tu
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Xiangqian Li
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Zeming Chen
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Ying Dan Liu
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | | | - Simone Capaccioli
- CNR-IPCF, Sede Secondaria Pisa, Largo Pontecorvo 3, I-56127 Pisa, Italy
| | - M Paluch
- Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
| | - Li-Min Wang
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
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10
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Gainaru C, Bauer S, Vynokur E, Wittkamp H, Hiller W, Richert R, Böhmer R. Dynamics in Supercooled Secondary Amide Mixtures: Dielectric and Hydrogen Bond Specific Spectroscopies. J Phys Chem B 2015; 119:15769-79. [DOI: 10.1021/acs.jpcb.5b10034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C. Gainaru
- Fakultät
Physik, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - S. Bauer
- Fakultät
Physik, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - E. Vynokur
- Fakultät
Physik, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - H. Wittkamp
- Fakultät
Physik, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - W. Hiller
- Fakultät
für Chemie und Chemische Biologie, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - R. Richert
- School
of Molecular Sciences, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - R. Böhmer
- Fakultät
Physik, Technische Universität Dortmund, 44221 Dortmund, Germany
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11
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Adrjanowicz K, Jakobsen B, Hecksher T, Kaminski K, Dulski M, Paluch M, Niss K. Communication: Slow supramolecular mode in amine and thiol derivatives of 2-ethyl-1-hexanol revealed by combined dielectric and shear-mechanical studies. J Chem Phys 2015; 143:181102. [DOI: 10.1063/1.4935510] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- K. Adrjanowicz
- Department of Sciences, DNRF Centre “Glass and Time,” IMFUFA, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
- NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61-614 Poznan, Poland
| | - B. Jakobsen
- Department of Sciences, DNRF Centre “Glass and Time,” IMFUFA, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
| | - T. Hecksher
- Department of Sciences, DNRF Centre “Glass and Time,” IMFUFA, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
| | - K. Kaminski
- Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - M. Dulski
- Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - M. Paluch
- Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - K. Niss
- Department of Sciences, DNRF Centre “Glass and Time,” IMFUFA, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
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