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Carrasco-Huertas G, Jiménez-Riobóo RJ, Gutiérrez MC, Ferrer ML, del Monte F. Carbon and carbon composites obtained using deep eutectic solvents and aqueous dilutions thereof. Chem Commun (Camb) 2020; 56:3592-3604. [DOI: 10.1039/d0cc00681e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Extending the “all-in-one” features of DESs to DES/H2O binary mixtures.
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Affiliation(s)
- Gaspar Carrasco-Huertas
- Instituto de Ciencia de Materiales de Madrid (ICMM)
- Consejo Superior de Investigaciones Científicas (CSIC)
- Cantoblanco 28049
- Spain
| | - Rafael J. Jiménez-Riobóo
- Instituto de Ciencia de Materiales de Madrid (ICMM)
- Consejo Superior de Investigaciones Científicas (CSIC)
- Cantoblanco 28049
- Spain
| | - María Concepción Gutiérrez
- Instituto de Ciencia de Materiales de Madrid (ICMM)
- Consejo Superior de Investigaciones Científicas (CSIC)
- Cantoblanco 28049
- Spain
| | - María Luisa Ferrer
- Instituto de Ciencia de Materiales de Madrid (ICMM)
- Consejo Superior de Investigaciones Científicas (CSIC)
- Cantoblanco 28049
- Spain
| | - Francisco del Monte
- Instituto de Ciencia de Materiales de Madrid (ICMM)
- Consejo Superior de Investigaciones Científicas (CSIC)
- Cantoblanco 28049
- Spain
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Roldán-Ruiz M, Jiménez-Riobóo R, Gutiérrez M, Ferrer M, del Monte F. Brillouin and NMR spectroscopic studies of aqueous dilutions of malicine: Determining the dilution range for transition from a “water-in-DES” system to a “DES-in-water” one. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.133] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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3
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Posada E, Roldán-Ruiz M, Jiménez Riobóo R, Gutiérrez M, Ferrer M, del Monte F. Nanophase separation in aqueous dilutions of a ternary DES as revealed by Brillouin and NMR spectroscopy. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.139] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kushare SK, Shaikh VR, Terdale SS, Dagade DH, Kolhapurkar RR, Patil KJ. Thermodynamics of aqueous polyethylene-glycol (PEG) solutions at 298.15K: Activity, activity coefficients and application of molecular theories. J Mol Liq 2013. [DOI: 10.1016/j.molliq.2013.06.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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5
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Reid ML, Benaouda F, Khengar R, Jones SA, Brown MB. Topical corticosteroid delivery into human skin using hydrofluoroalkane metered dose aerosol sprays. Int J Pharm 2013; 452:157-65. [DOI: 10.1016/j.ijpharm.2013.04.083] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 04/15/2013] [Accepted: 04/28/2013] [Indexed: 11/30/2022]
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6
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Aliotta F, Ponterio R, Saija F, Gapiński J, Pochylski M. Relaxation dynamics and evidence of scaling behaviours in aqueous polymer solutions. J Mol Liq 2011. [DOI: 10.1016/j.molliq.2010.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Pochylski M, Gapiński J. Brillouin Scattering Study of Polyethylene Glycol/Water System below Crystallization Temperature. J Phys Chem B 2010; 114:2644-9. [DOI: 10.1021/jp910783j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Jacek Gapiński
- Faculty of Physics, Adam Mickiewicz University, Poznań, Poland
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Pochylski M, Aliotta F, Ponterio RC, Saija F, Gapiński J. Some Evidence of Scaling Behavior in the Relaxation Dynamics of Aqueous Polymer Solutions. J Phys Chem B 2010; 114:1614-20. [DOI: 10.1021/jp9052456] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Pochylski
- Department of Physics, Adam Mickiewicz University, Poznań, Poland, and Istituto per I Processi Chimico Fisici del CNR, sezione di Messina, Italy
| | - F. Aliotta
- Department of Physics, Adam Mickiewicz University, Poznań, Poland, and Istituto per I Processi Chimico Fisici del CNR, sezione di Messina, Italy
| | - R. C. Ponterio
- Department of Physics, Adam Mickiewicz University, Poznań, Poland, and Istituto per I Processi Chimico Fisici del CNR, sezione di Messina, Italy
| | - F. Saija
- Department of Physics, Adam Mickiewicz University, Poznań, Poland, and Istituto per I Processi Chimico Fisici del CNR, sezione di Messina, Italy
| | - J. Gapiński
- Department of Physics, Adam Mickiewicz University, Poznań, Poland, and Istituto per I Processi Chimico Fisici del CNR, sezione di Messina, Italy
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Sarkar A, Trivedi S, Pandey S. Polymer Molecular Weight-Dependent Unusual Fluorescence Probe Behavior within 1-Butyl-3-methylimidazolium Hexafluorophosphate + Poly(ethylene glycol). J Phys Chem B 2009; 113:7606-14. [DOI: 10.1021/jp901338x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Abhra Sarkar
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Shruti Trivedi
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Siddharth Pandey
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
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Sarkar A, Trivedi S, Pandey S. Unusual Solvatochromism within 1-Butyl-3-methylimidazolium Hexafluorophosphate + Poly(ethylene glycol) Mixtures. J Phys Chem B 2008; 112:9042-9. [DOI: 10.1021/jp802833f] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Abhra Sarkar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi—110016, India
| | - Shruti Trivedi
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi—110016, India
| | - Siddharth Pandey
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi—110016, India
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Cataliotti RS, Palombo F, Paolantoni M, Sassi P, Raudino A. Concentration fluctuations and collective properties in mixed liquid systems: Rayleigh-Brillouin spectra oftert-butyl alcohol/ 2,2′-dimethylbutane liquid mixture. J Chem Phys 2007; 126:044505. [PMID: 17286485 DOI: 10.1063/1.2431170] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Rayleigh-Brillouin spectra have been measured in a range of temperatures and compositions of t-butyl alcohol/2,2(')-dimethylbutane liquid mixture. The mixture mole fraction has been varied from pure alkane (x(TBA)=0) to pure alcohol (x(TBA)=1) at temperatures between 283 and 323 K. In the same composition and temperature ranges the authors also executed measurements of mass density, shear viscosity, and refractive index. From light scattering spectra the authors have extracted the hypersound velocities and adiabatic compressibilities and evaluated their excess values. Moreover, the authors attempted to evaluate the isothermal (40 degrees C) Landau-Placzek ratios at various mole fractions, but these values proved to be subject to significant errors due to great uncertainty in the central component intensity measurements. Thus, in discussing the results, this latter quantity was considered only from a qualitative point of view. These results highlight a nonideal behavior of the studied liquid mixture with a probable azeotropic composition around x(TBA)=0.7 due to formation of small clusters of hydrogen-bonded alcohol tetramers that are completely surrounded by solvent molecules and analogous or smaller clusters. These clusters, shaped as inverse micelles, offer their hydrophobic moiety towards the molecules that constitute the solvation shell, resulting in a low polarity solution structure that minimizes the solute-solvent interactions. Differences in thermal and compositional behavior of excess molar volumes and adiabatic compressibilities have been interpreted by attributing different weights to the solute-solvent interaction forces and to the hydrogen bond connectivity effects.
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Affiliation(s)
- Rosario Sergio Cataliotti
- Dipartimento di Chimica, Sezione di Chimica Fisica, Università di Perugia, Via Elce di Sotto 8, I-06001 Perugia, Italy.
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Pochylski M, Aliotta F, Blaszczak Z, Gapiński J. Structuring Effects and Hydration Phenomena in Poly(Ethylene Glycol)/Water Mixtures Investigated by Brillouin Scattering. J Phys Chem B 2006; 110:20533-9. [PMID: 17034240 DOI: 10.1021/jp0620973] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aqueous solutions of poly(ethylene glycol) (PEG) of mean molecular mass of 600 g/mol (PEG600) are investigated by Brillouin scattering technique. At high PEG content, a relaxation phenomenon is observed, which is related to a local rearrangement of the polymer structure where the interaction, via hydrogen bonding, with the solvent molecules plays a role. The obtained values of the relaxation times match the literature data very well for a fast relaxation time revealed by dielectric relaxation measurements in very similar mixtures. The calculated concentration behaviors of the excess adiabatic compressibility turns out in good agreement with the previous findings from ultrasonic measurements at 3 MHz. The observed minimum in the adiabatic compressibility is interpreted as the result of the interaction between water and the EO units of the PEG chain, which results in a structure tighter then that typical of bulk water and of pure PEG600. Such a hypothesis is supported by the observation that volume fraction value of about 0.3 coincides with the concentration value at which full hydration of EO units takes place. The observation that at the same concentration, the polymer coils start to overlap each other further supports the idea that the adiabatic compressibility behavior is monitoring the structural evolution of the mixture. However, similar results are obtained for largely different binary mixture which suggests caution in taking this conclusion too literally. In particular, the hypothesis that the occurrence of an extreme in the excess adiabatic compressibility could be simply originated by statistical effects and that further work is required for disentangling entropic contribution from effects of hetero-association and self-aggregation of one or both the components.
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Affiliation(s)
- M Pochylski
- Istituto per I Processi Chimico Fisici del CNR, sezione di Messina, Italy Department of Physics, Adam Mickiewicz University, Poland.
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