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Hanke E, Telgmann T, Kaatze U. Monomer Exchange Kinetics, Dynamics of Concentration Fluctuations, and Chain Isomerization of Nonionic Surfactant/Water Systems. Evidence from Broadband Ultrasonic Spectra. TENSIDE SURFACT DET 2013. [DOI: 10.3139/113.100247] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Ultrasonic absorption spectra, measured between 0.1 and 2000 MHz, are discussed for a variety of poly(ethylene glycol) monoalkyl ether/water (CiEj=H2O) mixtures. Depending on the temperature, the surfactant concentration, and on the length of the hydrophobic (Ci) as well as the hydrophilic part (Ej) of the surfactant molecules, the spectra reveal a multitude of shapes. The set of spectra, however, can be consistently described considering (i) a relaxation term representing the monomer exchange of the micellar solutions, (ii) another one that reflects the local fluctuations in the surfactant concentration, and, with several systems, (iii) additional terms due to CiEj associations or conformational isomerizations. The parameters of these terms are discussed in the light of relevant models. Evidence is presented for a more general view of a fluctuation controlled monomer exchange mechanism that combines aspects of both theoretical models, the micelle formation/decay kinetics and dynamics of local concentration fluctuations.
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Bhattacharjee JK, Kaatze U. Anomalous Dynamics of Solutions of Nonionic Micelles in Water. J Phys Chem B 2011; 115:6069-75. [DOI: 10.1021/jp201015s] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Udo Kaatze
- Drittes Physikalisches Institut, Georg-August-Universität, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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Iwanowski I, Mirzaev SZ, Kaatze U. Relaxation rate in the critical dynamics of the micellar isobutoxyethanol-water system with lower consolute point. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2006; 73:061508. [PMID: 16906837 DOI: 10.1103/physreve.73.061508] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2006] [Indexed: 05/11/2023]
Abstract
For the isobutoxyethanol-water mixture of critical composition acoustical scaling function measurements have been performed at frequencies between 200 kHz and 3 MHz. Using the relaxation rates of concentration fluctuations as resulting from dynamic light scattering and shear viscosity measurements, the acoustical data can be well represented by the Bhattacharjee-Ferrell empirical scaling function. The theoretically predicted scaled half attenuation frequency Omega(BF)(1/2)=2.1 follows from the experiments. However, the adiabatic coupling constant, derived from the amplitude of the Bhattacharjee-Ferrell critical term, displays an unreliably strong temperature dependence. It is shown that this dependence upon temperature likely reflects a hidden low-frequency and low amplitude relaxation term in the acoustical spectra of the mixture of critical composition.
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Affiliation(s)
- I Iwanowski
- Drittes Physikalisches Institut, Georg-August-Universität, Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany
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Bauduin P, Renoncourt A, Kopf A, Touraud D, Kunz W. Unified concept of solubilization in water by hydrotropes and cosolvents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:6769-75. [PMID: 16008386 DOI: 10.1021/la050554l] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In the present work hydrophobic dyes, i.e. disperse red 13 (DR-13; (2-[4-(2-chloro-4-nitrophenylazo)-N-ethylphenylamino]ethanol) and Jaune au gras W1201 (1H-indene-1,3(2H)-dione,2-(2-quinolinyl)), are solubilized in water with the help of different additives: acetone and 1-propanol as typical cosolvents, sodium xylene sulfonate (SXS) as a representative of a classical hydrotrope, sodium dodecyl sulfate (SDS) as a typical surfactant, and finally some "solvosurfactants" [ propylene glycol monoalkyl ether derivatives (CiPOj: i = 1, j = 1 and 3; i = 3, j = 1 and 2; i = 4 and tertio-butyl, j = 1) and 1-propoxy-2-ethanol (C3EO1)]. These solvosurfactants are short amphiphiles that do not form well-defined structures in water such as micelles. For all additives an exponential increase in the solubilizations of the two studied hydrophobic dyes was observed when their concentrations in water were increased. Except for the SDS solution, no difference in the overall shapes of the solubilization curves (dye solubility against additive concentration) was found. All the studied molecules were classified according to their hydrotropic efficiencies, i.e., their abilities to solubilize a hydrophobic, sparingly soluble compound in water. The volume of the hydrophobic parts of the studied additives, roughly evaluated by simple calculations, was found to influence strongly the hydrotropic efficiency; i.e. the larger the hydrophobic part of the additive, the better the hydrotropic efficiency. By contrast, the hydrophilic part carrying a charge or not is of minor importance. Taking the hydrophobic part of the molecules as the key parameter, the water solubilization efficiency of cosolvents, hydrotropes, and solvosurfactants can be described in a coherent way.
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Affiliation(s)
- P Bauduin
- Institute of Physical and Theoretical Chemistry, University of Regensburg, D-93040 Regensburg, Germany
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Bauduin P, Wattebled L, Schrödle S, Touraud D, Kunz W. Temperature dependence of industrial propylene glycol alkyl ether/water mixtures. J Mol Liq 2004. [DOI: 10.1016/j.molliq.2004.01.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Menzel K, Mirzaev SZ, Kaatze U. Crossover behavior in micellar solutions with lower critical demixing point: broadband ultrasonic spectrometry of the isobutoxyethanol-water system. PHYSICAL REVIEW E 2003; 68:011501. [PMID: 12935144 DOI: 10.1103/physreve.68.011501] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2003] [Indexed: 11/07/2022]
Abstract
The aggregation kinetics of isobutoxyethanol-water mixtures with lower critical demixing point has been investigated. Two types of kinetics have been observed, a diffusion-controlled formation of micellar species and the formation of a microheterogeneous liquid structure, governed by fluctuations in the local concentration. Ultrasonic attenuation spectra of isobutoxyethanol-water mixtures have been measured between 100 kHz and 2 GHz at 25 degrees C and at several concentrations, covering the complete composition range. With the mixture of critical composition measurements have been performed at some temperatures near the critical temperature (T(c)=299.51 K). In addition to the asymptotic high frequency background contribution, the broadband spectra reveal a Bhattacharjee-Ferrell relaxation term due to critical concentration fluctuations, a restricted Hill term reflecting the monomer exchange between micelles and the suspending phase, and two Debye-type relaxation terms that are assigned to chemical relaxations. The relaxation rates of the Bhattacharjee-Ferrell term exceed those from static and dynamic light scattering (amplitude Gamma(0)=5.3 x 10(9) s(-1)), likely due to the effect of a second parallel pathway of relaxation in the ultrasonic field. The adiabatic coupling constant following from the amplitude in the ultrasonic spectrum agrees with that from a thermodynamic relation (g=1.3). The restricted Hill term displays the features of an extended Teubner-Kahlweit-Aniansson-Wall model of the micelle formation and decay kinetics in surfactant solutions with high critical micelle concentration (C=0.6 mol/l). The idea of a fluctuation controlled monomer exchange in aqueous solutions of poly(ethylene glycol) monoalkyl ether-water mixtures near the critical point is briefly discussed.
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Affiliation(s)
- K Menzel
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, 37073 Göttingen, Germany
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Rupprecht A, Kaatze U. Solution Properties of Urea and Its Derivatives in Water: Evidence from Ultrasonic Relaxation Spectra. J Phys Chem A 2002. [DOI: 10.1021/jp020322k] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Rupprecht
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, 37073 Göttingen, Germany
| | - U. Kaatze
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, 37073 Göttingen, Germany
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Polacek R, Stenger J, Kaatze U. Chair–chair conformational flexibility, pseudorotation, and exocyclic group isomerization of monosaccharides in water. J Chem Phys 2002. [DOI: 10.1063/1.1436123] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
In this tutorial article methods of acoustic relaxation measurements of liquids are reviewed. The present performance of various techniques is described and desirable trends in future developments are shown. An account is given on standards in the optical monitoring of acoustic waves (Brillouin scattering), on time domain (jump) techniques, as well as on frequency domain (continuous and pulse modulated ultrasonic wave) methods. The merits and limitations of the different techniques of measurement, covering the frequency range from 10 kHz up to nearly 10 GHz now, corresponding with relaxation times between about 0.1 ms and 100 ps, are discussed. Efforts to further enhance the experimental accuracy and to reduce the required sample volume are indicated.
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Affiliation(s)
- U Kaatze
- Drittes Physikalisches Institut, Georg-August Universität, Göttingen, Germany.
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11
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Hara K, Kuwabara H, Kajimoto O. Pressure Effect on Solvation Dynamics in Micellar Environment. J Phys Chem A 2001. [DOI: 10.1021/jp0109776] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kimihiko Hara
- Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hiroaki Kuwabara
- Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Okitsugu Kajimoto
- Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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Nandi N, Bhattacharyya K, Bagchi B. Dielectric relaxation and solvation dynamics of water in complex chemical and biological systems. Chem Rev 2000; 100:2013-46. [PMID: 11749282 DOI: 10.1021/cr980127v] [Citation(s) in RCA: 688] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- N Nandi
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560012, India
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Stenger J, Cowman M, Eggers F, Eyring EM, Kaatze U, Petrucci S. Molecular Dynamics and Kinetics of Monosaccharides in Solution. A Broadband Ultrasonic Relaxation Study. J Phys Chem B 2000. [DOI: 10.1021/jp9940194] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Stenger
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, D-37073 Göttingen, Germany, Department of Chemical Engineering, Chemistry, and Material Science, Polytechnic University, Brooklyn, New York 11201, Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg, D-37077 Göttingen, Germany, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, and Chemistry Department, Polytechnic University, Route 110, Farmingdale, New York 11735
| | - M. Cowman
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, D-37073 Göttingen, Germany, Department of Chemical Engineering, Chemistry, and Material Science, Polytechnic University, Brooklyn, New York 11201, Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg, D-37077 Göttingen, Germany, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, and Chemistry Department, Polytechnic University, Route 110, Farmingdale, New York 11735
| | - F. Eggers
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, D-37073 Göttingen, Germany, Department of Chemical Engineering, Chemistry, and Material Science, Polytechnic University, Brooklyn, New York 11201, Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg, D-37077 Göttingen, Germany, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, and Chemistry Department, Polytechnic University, Route 110, Farmingdale, New York 11735
| | - E. M. Eyring
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, D-37073 Göttingen, Germany, Department of Chemical Engineering, Chemistry, and Material Science, Polytechnic University, Brooklyn, New York 11201, Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg, D-37077 Göttingen, Germany, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, and Chemistry Department, Polytechnic University, Route 110, Farmingdale, New York 11735
| | - U. Kaatze
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, D-37073 Göttingen, Germany, Department of Chemical Engineering, Chemistry, and Material Science, Polytechnic University, Brooklyn, New York 11201, Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg, D-37077 Göttingen, Germany, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, and Chemistry Department, Polytechnic University, Route 110, Farmingdale, New York 11735
| | - S. Petrucci
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, D-37073 Göttingen, Germany, Department of Chemical Engineering, Chemistry, and Material Science, Polytechnic University, Brooklyn, New York 11201, Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg, D-37077 Göttingen, Germany, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, and Chemistry Department, Polytechnic University, Route 110, Farmingdale, New York 11735
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Rupprecht A, Kaatze U. Model of Noncritical Concentration Fluctuations in Binary Liquids. Verification by Ultrasonic Spectrometry of Aqueous Systems and Evidence of Hydrophobic Effects. J Phys Chem A 1999. [DOI: 10.1021/jp9908810] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. Rupprecht
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, D-37073 Göttingen, Germany
| | - U. Kaatze
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, D-37073 Göttingen, Germany
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Mandal D, Datta A, Pal SK, Bhattacharyya K. Solvation Dynamics of 4-Aminophthalimide in Water-in-Oil Microemulsion of Triton X-100 in Mixed Solvents. J Phys Chem B 1998. [DOI: 10.1021/jp9808781] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Debabrata Mandal
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
| | - Anindya Datta
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
| | - Samir Kumar Pal
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
| | - Kankan Bhattacharyya
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
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Datta A, Pal SK, Mandal D, Bhattacharyya K. Solvation Dynamics of Coumarin 480 in Vesicles. J Phys Chem B 1998. [DOI: 10.1021/jp980717x] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anindya Datta
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
| | - Samir Kumar Pal
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
| | - Debabrata Mandal
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
| | - Kankan Bhattacharyya
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
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Rupprecht A, Kaatze U. Ultrasonic Spectrometry of Triethylenediamine Aqueous Solutions. Protolysis and Supramolecular Structures. J Phys Chem A 1997. [DOI: 10.1021/jp972504y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. Rupprecht
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, D-37073 Göttingen, Germany
| | - U. Kaatze
- Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstrasse 42-44, D-37073 Göttingen, Germany
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