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Singh LP, Sharma G. Dielectric spectroscopy investigation of relaxation processes in the low-frequency regime and validity of the Stokes–Einstein–Nernst/Stokes–Einstein–Debye relation in poly(propylene glycol). Macromol Res 2023. [DOI: 10.1007/s13233-022-00104-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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2
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Zhao XY, Wang LN, He YF, Zhou HW, Huang YN. Measurements and analyses of the conductivities of probe ions in monohydroxy alcohol liquids. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2019.110473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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3
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Gering KL. Prediction of Electrolyte Conductivity: Results from a Generalized Molecular Model Based on Ion Solvation and a Chemical Physics Framework. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.083] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Starzonek S, Rzoska SJ, Drozd-Rzoska A, Pawlus S, Biała E, Martinez-Garcia JC, Kistersky L. Fractional Debye-Stokes-Einstein behaviour in an ultraviscous nanocolloid: glycerol and silver nanoparticles. SOFT MATTER 2015; 11:5554-5562. [PMID: 26067719 DOI: 10.1039/c5sm00266d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
One of the major features of glass forming ultraviscous liquids is the decoupling between translational and orientational dynamics. This paper presents studies of this phenomenon in glycerol, an accepted molecular glass former, concentrating on the impact of two exogenic factors: high pressures (P) up to the extreme 1.5 GPa and silver (Ag) nanoparticles (NPs). The analysis is focused on the fractional Debye-Stokes-Einstein (FDSE) relationship: σ(T,P)(τ(T,P))(S) = const, linking DC electric conductivity (σ) and primary (alpha, structural) relaxation time (τα). In glycerol and its nanocolloid (glycerol + Ag NPs) at atmospheric pressure only negligible decoupling (S ∼ 1) was detected. However, in the compressed nanocolloid, a well-defined transformation (at P = 1.2 GPa) from S ∼ 1 to the very strongly decoupled dynamics (S ∼ 0.5) occurred. For comparison, in pressurized 'pure' glycerol the stretched shift from S ∼ 1 to S ∼ 0.7 took place. This paper also presents the general discussion of FDSE behavior in ultraviscous liquids, including the new link between the FDSE exponent, fragility and the apparent activation enthalpy and volume.
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Affiliation(s)
- Szymon Starzonek
- Silesian Intercollegiate Center for Education and Interdisciplinary Research & Institute of Physics, University of Silesia, ul. 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland.
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Świergiel J, Bouteiller L, Jadżyn J. Compliance of the Stokes-Einstein model and breakdown of the Stokes-Einstein-Debye model for a urea-based supramolecular polymer of high viscosity. SOFT MATTER 2014; 10:8457-8463. [PMID: 25230766 DOI: 10.1039/c4sm01556h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Impedance spectroscopy was used for the study of the static and dynamic behavior of the electrical conductivity of a hydrogen-bonded supramolecular polymer of high viscosity. The experimental data are discussed in the frame of the Stokes-Einstein and Stokes-Einstein-Debye models. It was found that the translational movement of the ions is due to normal Brownian diffusion, which was revealed by a fulfillment of Ohm's law by the electric current and a strictly exponential decay of the current after removing the electric stimulus. The dependence of the dc conductivity on the viscosity of the medium fulfills the Stokes-Einstein model quite well. An extension of the model, by including in it the conductivity relaxation time, is proposed in this paper. A breakdown of the Stokes-Einstein-Debye model is revealed by the relations of the dipolar relaxation time to the viscosity and to the dc ionic conductivity. The importance of the C=O···H-N hydrogen bonds in that breakdown is discussed.
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Affiliation(s)
- Jolanta Świergiel
- Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, PL-60-179 Poznań, Poland.
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Rodrigues AC, Viciosa MT, Danède F, Affouard F, Correia NT. Molecular Mobility of Amorphous S-Flurbiprofen: A Dielectric Relaxation Spectroscopy Approach. Mol Pharm 2013; 11:112-30. [DOI: 10.1021/mp4002188] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. C. Rodrigues
- REQUIMTE/CQFB, Departamento de Química, Faculdade
de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - M. T. Viciosa
- CQFM − Centro
de Química-Física Molecular and IN − Institute
of Nanoscience and Nanotechnology, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - F. Danède
- Unité Matériaux et Transformation (UMET), UMR CNRS
8207, UFR de Physique, BAT P5, Université Lille 1, 59655 Villeneuve d’Ascq, France
| | - F. Affouard
- Unité Matériaux et Transformation (UMET), UMR CNRS
8207, UFR de Physique, BAT P5, Université Lille 1, 59655 Villeneuve d’Ascq, France
| | - N. T. Correia
- REQUIMTE/CQFB, Departamento de Química, Faculdade
de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
- Unité Matériaux et Transformation (UMET), UMR CNRS
8207, UFR de Physique, BAT P5, Université Lille 1, 59655 Villeneuve d’Ascq, France
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Wojnarowska Z, Roland CM, Swiety-Pospiech A, Grzybowska K, Paluch M. Anomalous electrical conductivity behavior at elevated pressure in the protic ionic liquid procainamide hydrochloride. PHYSICAL REVIEW LETTERS 2012; 108:015701. [PMID: 22304270 DOI: 10.1103/physrevlett.108.015701] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Indexed: 05/31/2023]
Abstract
Using broadband dielectric spectroscopy, we investigated the effect of hydrostatic pressure on the conductivity relaxation time τ{σ} of the supercooled protic ionic liquid, procainamide hydrochloride, a common pharmaceutical. The pressure dependence of τ{σ} exhibited anomalous behavior in the vicinity of the glass transition T{g}, manifested by abrupt changes in activation volume. This peculiar behavior, paralleling the change in temperature dependence of τ{σ} near T{g}, is a manifestation of the decoupling between electrical conductivity and structural relaxation. Although the latter effectively ceases in the glassy state, free ions retain their mobility but with a reduced sensitivity to thermodynamic changes. This is the first observation of decoupling of ion migration from structural relaxation in a glassy conductor by isothermal densification.
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Affiliation(s)
- Z Wojnarowska
- Institute of Physics, Silesian University, ul. Uniwersytecka 4, 40-007 Katowice, Poland
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Pawlus S, Paluch M, Nagaraj M, Vij JK. Effect of high hydrostatic pressure on the dielectric relaxation in a non-crystallizable monohydroxy alcohol in its supercooled liquid and glassy states. J Chem Phys 2011; 135:084507. [DOI: 10.1063/1.3626027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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9
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Świergiel J, Jadżyn J. Fractional Stokes–Einstein–Debye relation and orientational entropy effects in strongly hydrogen-bonded liquid amides. Phys Chem Chem Phys 2011; 13:3911-6. [DOI: 10.1039/c0cp01900c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Salehli F, Yildiz S, Ozbek H, Uykur E, Gursel YH, Durmaz YY. Peculiarities of δ- and α-relaxations in thermotropic side chain liquid crystalline polymers with and without nematic reentrant phase. POLYMER 2010. [DOI: 10.1016/j.polymer.2009.12.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Gupta SK, Raghunathan VA, Lakshminarayanan V, Kumar S. Novel Benzene-Bridged Triphenylene-Based Discotic Dyads. J Phys Chem B 2009; 113:12887-95. [DOI: 10.1021/jp9042254] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Satyam Kumar Gupta
- Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore-560 080, India
| | - V. A. Raghunathan
- Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore-560 080, India
| | - V. Lakshminarayanan
- Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore-560 080, India
| | - Sandeep Kumar
- Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore-560 080, India
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Kumar PS, Kumar S, Lakshminarayanan V. Electrical Conductivity Studies on Discotic Liquid Crystal−Ferrocenium Donor−Acceptor Systems. J Phys Chem B 2008; 112:4865-9. [DOI: 10.1021/jp709704x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- P. Suresh Kumar
- Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India
| | - Sandeep Kumar
- Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India
| | - V. Lakshminarayanan
- Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India
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Bogoslovov RB, Roland CM, Ellis AR, Randall AM, Robertson CG. Effect of Silica Nanoparticles on the Local Segmental Dynamics in Poly(vinyl acetate). Macromolecules 2008. [DOI: 10.1021/ma702372a] [Citation(s) in RCA: 149] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- R. B. Bogoslovov
- Chemistry Division, Code 6120, Naval Research Laboratory, Washington, D.C. 20375-5342, and Bridgestone Americas, Center for Research and Technology, 1200 Firestone Parkway, Akron, Ohio 44317-0001
| | - C. M. Roland
- Chemistry Division, Code 6120, Naval Research Laboratory, Washington, D.C. 20375-5342, and Bridgestone Americas, Center for Research and Technology, 1200 Firestone Parkway, Akron, Ohio 44317-0001
| | - A. R. Ellis
- Chemistry Division, Code 6120, Naval Research Laboratory, Washington, D.C. 20375-5342, and Bridgestone Americas, Center for Research and Technology, 1200 Firestone Parkway, Akron, Ohio 44317-0001
| | - A. M. Randall
- Chemistry Division, Code 6120, Naval Research Laboratory, Washington, D.C. 20375-5342, and Bridgestone Americas, Center for Research and Technology, 1200 Firestone Parkway, Akron, Ohio 44317-0001
| | - C. G. Robertson
- Chemistry Division, Code 6120, Naval Research Laboratory, Washington, D.C. 20375-5342, and Bridgestone Americas, Center for Research and Technology, 1200 Firestone Parkway, Akron, Ohio 44317-0001
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