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Song L, Gao Y, Zou P, Xu W, Gao M, Zhang Y, Huo J, Li F, Qiao J, Wang LM, Wang JQ. Detecting the exponential relaxation spectrum in glasses by high-precision nanocalorimetry. Proc Natl Acad Sci U S A 2023; 120:e2302776120. [PMID: 37155861 PMCID: PMC10193961 DOI: 10.1073/pnas.2302776120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 04/16/2023] [Indexed: 05/10/2023] Open
Abstract
Nonexponential relaxations are universal characteristics for glassy materials. There is a well-known hypothesis that nonexponential relaxation peaks are composed of a series of exponential events, which have not been verified. In this Letter, we discover the exponential relaxation events during the recovery process using a high-precision nanocalorimetry, which are universal for metallic glasses and organic glasses. The relaxation peaks can be well fitted by the exponential Debye function with a single activation energy. The activation energy covers a broad range from α relaxation to β relaxation and even the fast γ/β' relaxation. We obtain the complete spectrum of the exponential relaxation peaks over a wide temperature range from 0.63Tg to 1.03Tg, which provides solid evidence that nonexponential relaxation peaks can be decomposed into exponential relaxation units. Furthermore, the contribution of different relaxation modes in the nonequilibrium enthalpy space is measured. These results open a door for developing the thermodynamics of nonequilibrium physics and for precisely modulating the properties of glasses by controlling the relaxation modes.
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Affiliation(s)
- Lijian Song
- Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo315201, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
| | - Yurong Gao
- Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo315201, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
| | - Peng Zou
- Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo315201, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
| | - Wei Xu
- Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo315201, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
| | - Meng Gao
- Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo315201, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
| | - Yan Zhang
- Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo315201, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
| | - Juntao Huo
- Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo315201, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
| | - Fushan S. Li
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou450001, China
| | - Jichao C. Qiao
- School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xian710072, China
| | - Li-Min Wang
- State Key Laboratory of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei066004, China
| | - Jun-Qiang Wang
- Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo315201, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
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2
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Groёl S, Menzen T, Winter G. Calorimetric Investigation of the Relaxation Phenomena in Amorphous Lyophilized Solids. Pharmaceutics 2021; 13:1735. [PMID: 34684028 PMCID: PMC8538343 DOI: 10.3390/pharmaceutics13101735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 11/16/2022] Open
Abstract
Studying the thermal history and relaxation of solid amorphous drug product matrices by calorimetry is a well-known approach, particularly in the context of correlating the matrix parameters with the long-term stability of freeze-dried protein drug products. Such calorimetric investigations are even more relevant today, as the application of new process techniques in freeze-drying (which strongly influence the thermal history of the products) has recently gained more interest. To revive the application of calorimetric methods, the widely scattered knowledge on this matter is condensed into a review and completed with new experimental data. The calorimetric methods are applied to recent techniques in lyophilization, such as controlled nucleation and aggressive/collapse drying. Phenomena such as pre-Tg events in differential scanning calorimetry and aging shoulders in isothermal microcalorimetry are critically reviewed and supplemented with data of freeze-dried products that have not been characterized with these methods before.
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Affiliation(s)
- Sebastian Groёl
- Department of Pharmacy, Ludwig-Maximilians University Munich, 81377 Munich, Germany
| | - Tim Menzen
- Coriolis Pharma Research GmbH, 82152 Munich, Germany;
| | - Gerhard Winter
- Department of Pharmacy, Ludwig-Maximilians University Munich, 81377 Munich, Germany
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3
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Zheng Q, Zhang Y, Montazerian M, Gulbiten O, Mauro JC, Zanotto ED, Yue Y. Understanding Glass through Differential Scanning Calorimetry. Chem Rev 2019; 119:7848-7939. [DOI: 10.1021/acs.chemrev.8b00510] [Citation(s) in RCA: 154] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qiuju Zheng
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Yanfei Zhang
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Maziar Montazerian
- Vitreous Materials Laboratory (LaMaV), Department of Materials Engineering (DEMa), Federal University of São Carlos (UFSCar), 13.565-905 São Carlos, SP, Brazil
| | - Ozgur Gulbiten
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, United States
| | - John C. Mauro
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Edgar D. Zanotto
- Vitreous Materials Laboratory (LaMaV), Department of Materials Engineering (DEMa), Federal University of São Carlos (UFSCar), 13.565-905 São Carlos, SP, Brazil
| | - Yuanzheng Yue
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
- Department of Chemistry and Bioscience, Aalborg University, DK-9220 Aalborg, Denmark
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4
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Kissi EO, Kasten G, Löbmann K, Rades T, Grohganz H. The Role of Glass Transition Temperatures in Coamorphous Drug-Amino Acid Formulations. Mol Pharm 2018; 15:4247-4256. [PMID: 30020794 DOI: 10.1021/acs.molpharmaceut.8b00650] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The improved physical stability associated with coamorphous drug-amino acid (AA) formulations may indicate a decrease in mobility of the amorphous drug molecules, compared to the neat amorphous form of the drug. Since the characteristic glass transition temperatures ( Tgα and Tgβ) represent molecular mobility in amorphous systems, we aimed to characterize Tgα and Tgβ and to determine their role in physical stability as well as their potential usefulness to determine the presence of an excess component (either drug or AA) in coamorphous systems. Indomethacin (IND)-tryptophan (TRP) and carvedilol (CAR)-TRP were used as model coamorphous systems. The analytical techniques used were X-ray powder diffractometry (XRPD) to determine the solid-state form, dynamic mechanical analysis (DMA) to probe Tgα and Tgβ, and differential scanning calorimetry (DSC) to probe thermal behavior of the coamorphous systems. Tgα analysis showed a gradual monotonous increase in Tgα values with increasing AA concentration, and this increase in the Tgα value is not the cause of the improved physical stability. The Tgβ analysis for the IND-TRP sample with 10% drug had a Tgβ of 226.8 K, and samples with 20-90% drug had similar Tgβ values around 212.5 K. For CAR-TRP, samples with 10-40% drug had similar Tgβ values around 230.5 K, and samples with 50-90% drug had similar Tgβ values around 223.3 K. The similar Tgβ values in coamorphous systems at different drug ratios indicate that they in fact are the Tgβ of the component that is in excess to an ideal drug-AA coamorphous mixture. DSC and XRPD analysis showed that for IND-TRP, IND is in excess if the drug concentration is 30% or above and will eventually recrystallize. For CAR-TRP, CAR is in excess and recrystallizes when the drug concentration is 50% or above. We have proposed a means of estimating, on the basis of Tgβ, which drug to AA ratios will lead to optimally physically stable coamorphous systems that can be considered for further development.
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Affiliation(s)
- Eric Ofosu Kissi
- Department of Pharmacy , University of Copenhagen , DK-2100 Copenhagen Ø , Denmark
| | - Georgia Kasten
- Department of Pharmacy , University of Copenhagen , DK-2100 Copenhagen Ø , Denmark
| | - Korbinian Löbmann
- Department of Pharmacy , University of Copenhagen , DK-2100 Copenhagen Ø , Denmark
| | - Thomas Rades
- Department of Pharmacy , University of Copenhagen , DK-2100 Copenhagen Ø , Denmark
| | - Holger Grohganz
- Department of Pharmacy , University of Copenhagen , DK-2100 Copenhagen Ø , Denmark
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5
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Kissi EO, Grohganz H, Löbmann K, Ruggiero MT, Zeitler JA, Rades T. Glass-Transition Temperature of the β-Relaxation as the Major Predictive Parameter for Recrystallization of Neat Amorphous Drugs. J Phys Chem B 2018; 122:2803-2808. [DOI: 10.1021/acs.jpcb.7b10105] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eric Ofosu Kissi
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Holger Grohganz
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Korbinian Löbmann
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Michael T. Ruggiero
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge, CB3 0AS, United Kingdom
| | - J. Axel Zeitler
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge, CB3 0AS, United Kingdom
| | - Thomas Rades
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
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6
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Protein Internal Dynamics Associated With Pre-System Glass Transition Temperature Endothermic Events: Investigation of Insulin and Human Growth Hormone by Solid State Hydrogen/Deuterium Exchange. J Pharm Sci 2016; 105:3290-3295. [PMID: 27640753 DOI: 10.1016/j.xphs.2016.07.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 05/28/2016] [Accepted: 07/28/2016] [Indexed: 11/23/2022]
Abstract
Lyophilized proteins are generally stored below their glass transition temperature (Tg) to maintain long-term stability. Some proteins in the (pure) solid state showed a distinct endotherm at a temperature well below the glass transition, designated as a pre-Tg endotherm. The pre-Tg endothermic event has been linked with a transition in protein internal mobility. The aim of this study was to investigate the internal dynamics of 2 proteins, insulin and human growth hormone (hGH), both of which exhibit the pre-Tg endothermic event with onsets at 50°C-60°C. Solid state hydrogen/deuterium (H/D) exchange of both proteins was characterized by Fourier transform infrared spectroscopy over a temperature range from 30°C to 80°C. A distinct sigmoidal transition in the extent of H/D exchange had a midpoint of 56.1 ± 1.2°C for insulin and 61.7 ± 0.9°C for hGH, suggesting a transition to greater mobility in the protein molecules at these temperatures. The data support the hypothesis that the pre-Tg event is related to a transition in internal protein mobility associated with the protein dynamical temperature. Exceeding the protein dynamical temperature is expected to activate protein internal motion and therefore may have stability consequences.
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7
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Dulski M, Cecotka A, Tripathy SN, Sakalouski A, Wolnica K, Tarnacka M, Wrzalik R, Kamiński K, Paluch M. Experimental (FTIR, BDS) and theoretical analysis of mutarotation kinetics of d-fructose mixed with different alcohols in the supercooled region. RSC Adv 2016. [DOI: 10.1039/c6ra13266a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The mutarotation kinetics of pure molten d-fructose and its binary mixture with alcohols (i.e., sorbitol and maltitol) have been reported using Fourier transform infrared, broadband dielectric spectroscopy and density functional theory calculations.
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Affiliation(s)
- M. Dulski
- Institute of Material Science
- University of Silesia
- 41-500 Chorzow
- Poland
- Silesian Center for Education and Interdisciplinary Research
| | - A. Cecotka
- Silesian Center for Education and Interdisciplinary Research
- 41-500 Chorzow
- Poland
- A. Chelkowski Institute of Physics
- University of Silesia
| | - S. N. Tripathy
- Silesian Center for Education and Interdisciplinary Research
- 41-500 Chorzow
- Poland
- A. Chelkowski Institute of Physics
- University of Silesia
| | - A. Sakalouski
- Silesian Center for Education and Interdisciplinary Research
- 41-500 Chorzow
- Poland
- A. Chelkowski Institute of Physics
- University of Silesia
| | - K. Wolnica
- Silesian Center for Education and Interdisciplinary Research
- 41-500 Chorzow
- Poland
- A. Chelkowski Institute of Physics
- University of Silesia
| | - M. Tarnacka
- Silesian Center for Education and Interdisciplinary Research
- 41-500 Chorzow
- Poland
- A. Chelkowski Institute of Physics
- University of Silesia
| | - R. Wrzalik
- Silesian Center for Education and Interdisciplinary Research
- 41-500 Chorzow
- Poland
- A. Chelkowski Institute of Physics
- University of Silesia
| | - K. Kamiński
- Silesian Center for Education and Interdisciplinary Research
- 41-500 Chorzow
- Poland
- A. Chelkowski Institute of Physics
- University of Silesia
| | - M. Paluch
- Silesian Center for Education and Interdisciplinary Research
- 41-500 Chorzow
- Poland
- A. Chelkowski Institute of Physics
- University of Silesia
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8
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Ngai KL, Capaccioli S, Prevosto D, Wang LM. Coupling of Caged Molecule Dynamics to JG β-Relaxation II: Polymers. J Phys Chem B 2015; 119:12502-18. [DOI: 10.1021/acs.jpcb.5b07293] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K. L. Ngai
- CNR-IPCF, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy
- State
Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004 China
| | - S. Capaccioli
- CNR-IPCF, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy
- Dipartimento
di Fisica, Università di Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy
| | - D. Prevosto
- CNR-IPCF, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy
| | - Li-Min Wang
- State
Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004 China
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9
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Capaccioli S, Ngai KL, Thayyil MS, Prevosto D. Coupling of Caged Molecule Dynamics to JG β-Relaxation: I. J Phys Chem B 2015; 119:8800-8. [DOI: 10.1021/acs.jpcb.5b04408] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. Capaccioli
- Dipartimento
di Fisica, Università di Pisa, Largo Bruno Pontecorvo 3, I-56127, Pisa, Italy
- CNR-IPCF, Largo Bruno Pontecorvo 3, I-56127, Pisa, Italy
| | - K. L. Ngai
- CNR-IPCF, Largo Bruno Pontecorvo 3, I-56127, Pisa, Italy
- State
Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004 China
| | | | - D. Prevosto
- CNR-IPCF, Largo Bruno Pontecorvo 3, I-56127, Pisa, Italy
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10
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Smit FJ, van Biljon RA, Birkholtz LM, N'Da DD. Synthesis and in vitro biological evaluation of dihydroartemisinyl-chalcone esters. Eur J Med Chem 2015; 90:33-44. [DOI: 10.1016/j.ejmech.2014.11.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 10/21/2014] [Accepted: 11/06/2014] [Indexed: 10/24/2022]
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11
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Abstract
Abstract
Focusing on metallic glasses as model systems, we review the features and mechanisms of the β-relaxations, which are intrinsic and universal to supercooled liquids and glasses, and demonstrate their importance in understanding many crucial unresolved issues in glassy physics and materials science, including glass transition phenomena, mechanical properties, shear-banding dynamics and deformation mechanisms, diffusion and the breakdown of the Stokes–Einstein relation as well as crystallization and stability of glasses. We illustrate that it is an attractive prospect to incorporate these insights into the design of new glassy materials with extraordinary properties. We also outline important questions regarding the nature of β-relaxations and highlight some emerging research directions in this still-evolving field.
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Affiliation(s)
- Hai Bin Yu
- Physikalisches Institut, Universität Göttingen, D-37077 Göttingen, Germany
| | - Wei Hua Wang
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Hai Yang Bai
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Konrad Samwer
- Physikalisches Institut, Universität Göttingen, D-37077 Göttingen, Germany
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12
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Saha D, Joshi YM, Bandyopadhyay R. Investigation of the dynamical slowing down process in soft glassy colloidal suspensions: comparisons with supercooled liquids. SOFT MATTER 2014; 10:3292-3300. [PMID: 24637644 DOI: 10.1039/c4sm00187g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The primary and secondary relaxation timescales of aging colloidal suspensions of Laponite are estimated from intensity autocorrelation functions obtained in dynamic light scattering (DLS) experiments. The dynamical slowing down of these relaxation processes are compared with observations in fragile supercooled liquids by establishing a one-to-one mapping between the waiting time since filtration of a Laponite suspension and the inverse of the temperature of a supercooled liquid that is rapidly quenched towards its glass transition temperature. New timescales associated with primary and secondary relaxation processes, such as the characteristic timescale associated with the slowdown of the secondary relaxation process and the glass transition time, are extracted to describe the phenomenon of dynamical arrest in Laponite suspensions. In results that are strongly reminiscent of those extracted from supercooled liquids approaching their glass transitions, it is demonstrated that a strong coupling exists between the primary and secondary relaxation processes of aging Laponite suspensions in the cage-forming regime. Furthermore, the experimental data presented here clearly demonstrate the self-similar nature of the aging dynamics of Laponite suspensions within a range of sample concentrations.
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Affiliation(s)
- Debasish Saha
- Soft Condensed Matter Group, Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India.
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13
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Bhattacharya S, Bhardwaj SP, Suryanarayanan R. Molecular Motions in Sucrose-PVP and Sucrose-Sorbitol Dispersions—II. Implications of Annealing on Secondary Relaxations. Pharm Res 2014; 31:2822-8. [DOI: 10.1007/s11095-014-1379-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 04/07/2014] [Indexed: 11/29/2022]
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14
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Smit FJ, N’Da DD. Synthesis, in vitro antimalarial activity and cytotoxicity of novel 4-aminoquinolinyl-chalcone amides. Bioorg Med Chem 2014; 22:1128-38. [DOI: 10.1016/j.bmc.2013.12.032] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/02/2013] [Accepted: 12/12/2013] [Indexed: 11/25/2022]
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15
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Mizuno M, Pikal MJ. Is the pre-Tg DSC endotherm observed with solid state proteins associated with the protein internal dynamics? Investigation of bovine serum albumin by solid state hydrogen/deuterium exchange. Eur J Pharm Biopharm 2013; 85:170-6. [DOI: 10.1016/j.ejpb.2013.04.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 04/23/2013] [Accepted: 04/25/2013] [Indexed: 11/30/2022]
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16
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Laitinen R, Löbmann K, Strachan CJ, Grohganz H, Rades T. Emerging trends in the stabilization of amorphous drugs. Int J Pharm 2013; 453:65-79. [DOI: 10.1016/j.ijpharm.2012.04.066] [Citation(s) in RCA: 308] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 04/20/2012] [Accepted: 04/23/2012] [Indexed: 11/26/2022]
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17
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Zhang RC, Li R, Lu A, Jin Z, Liu B, Xu Z. The glass transition temperature of poly(phenylene sulfide) with various crystallinities. POLYM INT 2012. [DOI: 10.1002/pi.4333] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Capaccioli S, Ngai KL, Paluch M, Prevosto D. Mechanism of fast surface self-diffusion of an organic glass. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2012; 86:051503. [PMID: 23214785 DOI: 10.1103/physreve.86.051503] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 09/27/2012] [Indexed: 06/01/2023]
Abstract
Zhu et al. [L. Zhu, C. W. Brian, S. F. Swallen, P. T. Straus, M. D. Ediger, and L. Yu, Phys. Rev. Lett. 106, 256103 (2011)] measured the surface self-diffusion for an organic glass former, indomethacin, and found surface diffusion is more than 10(6) times faster than bulk diffusion at temperatures around T(g). With the help of dielectric relaxation and differential scanning calorimetry measurements on bulk indomethacin, and analysis of the data using the coupling model, we provide a quantitative explanation. We find the bulk α-relaxation time is longer than the primitive relaxation time also by about six orders of magnitude in a range of temperature above and below the bulk T(g). Thus, the cause of the fast surface diffusion is the nearly vanishing of intermolecular coupling of relaxation and diffusion at the surface. The results of related experimental studies of enhanced relaxation and diffusion at the surface of other glass formers also have been analyzed and quantitatively explained. Our predictions on surface diffusion from the coupling model are compared with that given by the random first order transition theory.
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Affiliation(s)
- S Capaccioli
- Physics Department, University of Pisa, Largo B Pontecorvo 3, I-56127 Pisa, Italy
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19
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Baird JA, Taylor LS. Evaluation of amorphous solid dispersion properties using thermal analysis techniques. Adv Drug Deliv Rev 2012; 64:396-421. [PMID: 21843564 DOI: 10.1016/j.addr.2011.07.009] [Citation(s) in RCA: 324] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Revised: 07/25/2011] [Accepted: 07/28/2011] [Indexed: 11/28/2022]
Abstract
Amorphous solid dispersions are an increasingly important formulation approach to improve the dissolution rate and apparent solubility of poorly water soluble compounds. Due to their complex physicochemical properties, there is a need for multi-faceted analytical methods to enable comprehensive characterization, and thermal techniques are widely employed for this purpose. Key parameters of interest that can influence product performance include the glass transition temperature (T(g)), molecular mobility of the drug, miscibility between the drug and excipients, and the rate and extent of drug crystallization. It is important to evaluate the type of information pertaining to the aforementioned properties that can be extracted from thermal analytical measurements, in addition to considering any inherent assumptions or limitations of the various analytical approaches. Although differential scanning calorimetry (DSC) is the most widely used thermal analytical technique applied to the characterization of amorphous solid dispersions, there are many established and emerging techniques which have been shown to provide useful information. Comprehensive characterization of fundamental material descriptors will ultimately lead to the formulation of more robust solid dispersion products.
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Affiliation(s)
- Jared A Baird
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, USA
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20
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Capaccioli S, Paluch M, Prevosto D, Wang LM, Ngai KL. Many-Body Nature of Relaxation Processes in Glass-Forming Systems. J Phys Chem Lett 2012; 3:735-43. [PMID: 26286282 DOI: 10.1021/jz201634p] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Most glass-forming systems are composed of basic units interacting with each other with a nontrivial anharmonic potential. Naturally, relaxation and diffusion in glass formers is a many-body problem. Results from recent experimental studies are presented to show the effects of many-body relaxation and diffusion manifested on the dynamic properties of glass formers. Considering that the effects are general and critical, the problem of glass transition will not be solved until the many-body nature of the relaxation process has been incorporated fundamentally into any theory.
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Affiliation(s)
| | - M Paluch
- §Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
| | | | - Li-Min Wang
- ∥State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
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Choonara YE, Pillay V, Danckwerts MP, Carmichael TR, du Toit LC, Khan RA. Micromechanical and physical stability analysis of an irradiated poly (lactic-co-glycolic acid) donut-shaped minitablet device for intraocular implantation. Pharm Dev Technol 2012; 18:1186-203. [PMID: 22335771 DOI: 10.3109/10837450.2011.619541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
This study pragmatically characterized the micromechanical and physical stability of a poly(lactic-co-glycolic acid) (PLGA)-based ganciclovir (GCV)-loaded donut-shaped minitablet (DSMT) device for intraocular implantation. Thermal and spectroscopic analysis was performed on various drug-polymer permutations. Porositometric profiles were quantitatively analyzed coupled with qualitatively SEM imaging. The tensile strength (TS) and fracture energy (FE) of the device was also determined pre- and post-γ-sterilization. Inimitably, chemometric and molecular modeling provided a supportive confirmatory tool for establishing fundamental correlative suppositions between the transitioned surface morphology and the micromechanical stability after γ-irradiation. Isotherm plot volumes ranged between -0.028 ± 0.022 and 0.110 ± 0.005 m(2)/g for pre- and post-sterilized devices, respectively, revealing a microporous alteration in porosity. Pre-sterilized devices had larger pores (BJHa=286.22 vs. 192.49 Å) and lower FE (151.301 ± 6.089 N/m) and TS (26.396 ± 1.062 N) values while sterilized devices had crystalline matrices that facilitated the superiorly controlled drug release kinetcs obtained. DSC thermograms displayed the characteristic disordered crystallization of GCV and hydration exotherms resulting from ionization during γ-irradiation. FTIR spectrograms showed fingerprint molecular imprints of GCV and axial stretching of hybridized carbons of PLGA with no subversive drug-polymer interactions after γ-irradiation. Integration of the results inveterately revealed that compression and subsequent γ-irradiation of the device affected desirable micromechanical and solid-state stability behavior.
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Affiliation(s)
- Yahya E Choonara
- University of the Witwatersrand, Faculty of Health Sciences, Department of Pharmacy and Pharmacology , 7 York Road, Parktown, 2193, Johannesburg, South Africa
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Bhattacharya S, Suryanarayanan R. Molecular Motions in Sucrose-PVP and Sucrose-Sorbitol Dispersions: I. Implications of Global and Local Mobility on Stability. Pharm Res 2011; 28:2191-203. [DOI: 10.1007/s11095-011-0447-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Accepted: 04/05/2011] [Indexed: 11/29/2022]
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Adrjanowicz K, Paluch M, Ngai KL. Determining the structural relaxation times deep in the glassy state of the pharmaceutical Telmisartan. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2010; 22:125902. [PMID: 21389498 DOI: 10.1088/0953-8984/22/12/125902] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
By using the dielectric relaxation method proposed recently by Casalini and Roland (2009 Phys. Rev. Lett. 102 035701), we were able to determine the structural α-relaxation times deep in the glassy state of the pharmaceutical, Telmisartan. Normally, deep in the glassy state τ(α) is so long that it cannot be measured but τ(β), which is usually much shorter, can be directly determined. The method basically takes advantage of the connection between the α-relaxation and the secondary β-relaxation of the Johari-Goldstein kind, including a relation between their relaxation times τ(α) and τ(β), respectively. Thus, τ(α) of Telmisartan were determined by monitoring the change of the dielectric β-loss, ε'', with physical aging time at temperatures well below the vitrification temperature. The values of τ(α) were compared with those expected by the coupling model (CM). Unequivocal comparison cannot be made in the case of Telmisartan because its β-loss peak is extremely broad, and the CM predicts only an order of magnitude agreement between the primitive relaxation frequency and the β-peak frequency. We also made an attempt to analyze all isothermal and aging susceptibility data after transformation into the electric modulus representation. The τ(α) found in the glass state by using the method of Casalini and Roland in the modulus representation are similar to those obtained in the susceptibility representation. However, it is remarkable that the stretching parameter β(KWW - M) = 0.51 in the electric modulus representation gives more precise fits to the aging data than in the susceptibility representation with β(KWW) = 0.61. Our results suggest that the electric modulus representation may be useful as an alternative to analyze aging data, especially in the case of highly polar glassformers having a large ratio of low frequency and high frequency dielectric constants, such as the Telmisartan studied.
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Affiliation(s)
- K Adrjanowicz
- Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
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24
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The Impact of Thermal Treatment on the Stability of Freeze Dried Amorphous Pharmaceuticals: I. Dimer Formation in Sodium Ethacrynate. J Pharm Sci 2010; 99:663-82. [DOI: 10.1002/jps.21959] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Wang B, Cicerone MT, Aso Y, Pikal MJ. The Impact of Thermal Treatment on the Stability of Freeze-Dried Amorphous Pharmaceuticals: II. Aggregation in an IgG1 Fusion Protein. J Pharm Sci 2010; 99:683-700. [DOI: 10.1002/jps.21960] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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26
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Dranca I, Lupascu T. Implications of Global and Local Mobility in Amorphous Excipients as Determined by DSC and TM DSC. CHEMISTRY JOURNAL OF MOLDOVA 2009. [DOI: 10.19261/cjm.2009.04(2).02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The paper explores the use of differential scanning calorimetry (DSC) and temperature modulated differential scanning calorimetry (TM DSC) to study α- and β- processes in amorphous sucrose and trehalose. The real part of the complex heat capacity is evaluated at the frequencies, f, from 5 to 20mHz. β-relaxations were studied by annealing glassy samples at different temperatures and subsequently heating at different rates in a differential scanning calorimeter.
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Ivanov IT, Tsokeva Z. Effect of chirality on PVP/drug interaction within binary physical mixtures of ibuprofen, ketoprofen, and naproxen: a DSC study. Chirality 2009; 21:719-27. [PMID: 18988257 DOI: 10.1002/chir.20671] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We report on the thermal behavior of freshly prepared binary drug/polymer physical mixtures that contained ibuprofen, ketoprofen, or naproxen as a drug, and polyvinylpyrrolidone (PVP), hydroxyethylcellulose (HEC), or methylcellulose (MC) as excipient. At 6-10 degrees C/min heating rates the DSC detected a sharp, single endotherm that corresponds to the melting of drug. On heating physical mixtures of PVP and racemic ibuprofen or ketoprofen at lower heating rates, another endotherm was registered in front of the original one. To observe the additional endotherm, specific minimal values of the heating rate and of PVP weight fraction were needed; for ibuprofen and ketoprofen they were 1.5 and 2.0 degrees C/min, and 5 and 15% (w/w), respectively. At greater PVP weight fractions the top temperatures, T(mp), of both peaks were reduced almost linearly indicating strong solid-state interfacial reaction between the drug particles and PVP matrix. The additional endotherm was abolished at greater heating rates (2 degrees C/min for ibuprofen, 3 degrees C/min for ketoprofen), by replacing the racemate with respective S+-enantiomer and by replacing PVP with HEC and MC. Hence, the possible inclusion of enantioselective component within the PVP/drug interaction, responsible for the amorphization of physical mixture over storage, is assumed.
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Affiliation(s)
- Ivan T Ivanov
- Department of Physics, Biophysics, Roentgenology and Radiology, Medical Faculty, Thracian University, Stara Zagora, Bulgaria.
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Bhattacharya S, Suryanarayanan R. Local Mobility in Amorphous Pharmaceuticals—Characterization and Implications on Stability. J Pharm Sci 2009; 98:2935-53. [DOI: 10.1002/jps.21728] [Citation(s) in RCA: 175] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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29
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Thermal behavior and stability of biodegradable spray-dried microparticles containing triamcinolone. Int J Pharm 2009; 368:45-55. [DOI: 10.1016/j.ijpharm.2008.09.054] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2008] [Revised: 09/26/2008] [Accepted: 09/30/2008] [Indexed: 11/16/2022]
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30
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Implications of Global and Local Mobility in Amorphous Sucrose and Trehalose as Determined by Differential Scanning Calorimetry. Pharm Res 2009; 26:1064-72. [DOI: 10.1007/s11095-008-9817-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Accepted: 12/16/2008] [Indexed: 11/27/2022]
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31
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Luthra SA, Hodge IM, Pikal MJ. Investigation of the Impact of Annealing on Global Molecular Mobility in Glasses: Optimization for Stabilization of Amorphous Pharmaceuticals. J Pharm Sci 2008; 97:3865-82. [DOI: 10.1002/jps.21255] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Chow K, Tong HH, Lum S, Chow AH. Engineering of Pharmaceutical Materials: An Industrial Perspective. J Pharm Sci 2008; 97:2855-77. [DOI: 10.1002/jps.21212] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Luthra SA, Hodge IM, Pikal MJ. Effects of Annealing on Enthalpy Relaxation in Lyophilized Disaccharide Formulations: Mathematical Modeling of DSC Curves. J Pharm Sci 2008; 97:3084-99. [DOI: 10.1002/jps.21186] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Pikal MJ, Rigsbee DR, Roy ML. Solid State Chemistry of Proteins: I. Glass Transition Behavior in Freeze Dried Disaccharide Formulations of Human Growth Hormone (HGH). J Pharm Sci 2007; 96:2765-76. [PMID: 17621677 DOI: 10.1002/jps.20960] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Although freeze dried formulations are commonly characterized using differential scanning calorimetry (DSC), a protein-rich system behaves as a "strong glass", and the glass transition temperature, T(g), cannot be directly determined by DSC. A strong glass means a small heat capacity change at T(g), triangle upC(p), and a very broad glass transition region, or a large triangle upT(g). However, direct experimental evidence for a small triangle upC(p) and a large triangle upT(g) have been lacking. Here, we utilize extrapolation of thermal analysis data in protein:disaccharide mixtures to evaluate T(g), triangle upT(g), and triangle upC(p) for "pure" human growth hormone (hGH) from low to moderate residual water. We find that triangle upT(g) is indeed large and triangle upC(p) is very small. Also, the T(g) for pure hGH decreases from a value of about 136 degrees C when dry to around 25 degrees C at 12% water. This glass transition is not the onset of mobility within the protein molecule but rather signals onset of whole molecule rotation and translation. We also observe complex pre-T(g) thermal events in the DSC data, which are interpreted as consequences of relaxation events, largely due to the disaccharide, and are characteristic of freeze dried systems having a broad distribution of relaxing substates.
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Affiliation(s)
- Michael J Pikal
- School of Pharmacy, University of Connecticut, Storrs, Connecticut, USA.
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Vyazovkin S, Dranca I. Comparative Relaxation Dynamics of Glucose and Maltitol. Pharm Res 2006; 23:2158-64. [PMID: 16952006 DOI: 10.1007/s11095-006-9050-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2006] [Accepted: 05/05/2006] [Indexed: 10/24/2022]
Abstract
PURPOSE To demonstrate the utility of differential scanning calorimetry (DSC) for determining activation energy landscape in amorphous pharmaceutical systems throughout the sub-Tg and Tg regions. MATERIALS AND METHODS DSC was employed to determine the effective activation energies (E) of the relaxation in sub-Tg and Tg regions as well as the sizes of cooperatively rearranging regions in glassy maltitol and glucose. RESULTS It has been found that in the sub-Tg region E decreases with decreasing T reaching the values approximately 60 (glucose) and approximately 70 (maltitol) kJ mol(-1) that are comparable to the literature values of the activation energies for the beta-relaxation. In the Tg region E decreases (from approximately 250 to approximately 150 kJ mol(-1) in maltitol and from approximately 220 to approximately 170 kJ mol(-1) in glucose) with increasing T as typically found for the alpha-relaxation. From the heat capacity measurements the sizes of cooperatively rearranging regions have been determined as 3.1 (maltitol) and 3.3 (glucose) nm. CONCLUSIONS DSC can be used for evaluating the energy landscapes. The E values for maltitol are somewhat greater than for glucose due to the added impeding effect of the bulky substitute group in maltitol. The comparable sizes of the cooperatively rearranging regions suggest a similarity of the heterogeneous glassy structures of the two compounds.
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Affiliation(s)
- Sergey Vyazovkin
- Department of Chemistry, University of Alabama at Birmingham, 901 S. 14th Street, Birmingham, AL 35294, USA.
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