Structural Behavior of Alcohol−1,4-Dioxane Mixtures through Dielectric Properties Using TDR

Kumbharkhane, A.C.; Shinde, M. N.; Mehrotra, S. C.; Oshiki, Noriaki; Shinyashiki, Naoki; Yagihara, Shin; Sudo, Seiichi

doi:10.1021/jp904845p

Cited by 35 publications

(19 citation statements)

References 26 publications

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“…We calculated the average number of hydrogen-bonded solvent -solvent pairs [n 11 HB ] V and solvent -solute pairs [n 12 HB ] V per unit volume (per cm 3 ) using the following equations [18]: and (6) where C SOLVENT is the weight fraction of solvent, ρ mix (gram per cm 3 ) is the density of mixture, N A is the Avogadro number, as 6.02  10 23 (per mol) and M SOLVENT is the molecular weight of solvent. HB ] V increases with increasing X DX and that of [n 12 HB ] V has a maxima at concentration X DX ≈ 0.50 for DMF-DX and X DX ≈ 0.37 for NMA-DX.…”

Section: Resultsmentioning

confidence: 99%

Dielectric Relaxation Study of Aqueous Amides in Non-Polar Solute Using Picoseconds Time Domain Technique

Mahajan¹,

Kumbharkhane²

2012

IJBBB

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Abstract-The dielectric permittivity of amide -1, 4-dioxane (DX) for various concentrations has been studied in the frequency range from 10 MHz to 30 GHz using the time domain reflectometry (TDR) method. A hydrogen bonded theory suggested by Luzar is applied to compute correlation terms for the mixtures. Static permittivity for the mixtures can be explained using the Luzar model by assuming the formation of two types of hydrogen bonded dimmers, one between amide-amide (pair 1) and other between amide-1, 4-dioxane (pair 2). The numbers of these pairs are also estimated as a function of concentration. Index Terms-Dielectric permittivity, relaxation time, time domain reflectometry (TDR), bruggeman factor I. INTRODUCTIONAmide represents an important class of bio-organic solvent. The hydrogen bond formation ability of these solvents is useful in understanding the peptide linkage in complex bio-systems [1]- [3]. The study of hydrogen bonding molecular interactions of binary mixtures is currently a significant challenge in the research field of science and technology. Hydrogen bond constitutes a very interesting class of intermolecular interactions, which are of extreme importance in many fields of chemistry and molecular biology. "Hydrogen Bonding in Biological Structures" can be used in many ways by biophysicists [4]. The study of the H-bonds of the type O=H ---O=C occupies a position of considerable importance as it relates to the study of biopolymers [5]. In the case of amides, N, N-dimethylformamide (DMF) is able to form the H-bonded network structures with dipolar aprotic and protic solvents [6]. Malathi M. et al. have studied mutual interaction of amides with non polar solvents to understand the conformational stability of protein molecules [7]. Thenappan and Sankar were studied hydrogen-bonded complexes of alcohol with N, N-dimethylformamide (DMF) [8]. DMF is a widely used solvent for many recently developed synthetic procedures because of its powerful solvating properties [9]. N-methylacetamide (NMA) is the most frequently used analog compound for the peptide unit in Manuscript received February 4, 2012; revised March 25, 2012 proteins. Paul Firman and S. Sahoo were studied the mixture of N-methylacetamaide (NMA) with non-polar solvent [10], [11]. The non polar solvent 1, 4-dioxane (DX) is used as a laboratory reagent and as a solvent for the production of cellulose acetate, ethyl cellulose, benzyl cellulose, dyes, oils, fats and polyvinyl polymers. The intermolecular interaction plays an important part in intermolecular recognition processes essential to most of biological systems. It also found that Physical and chemical phenomenon of binary systems are closely related to the intermolecular interactions.In the present work, we report a comparative dielectric relaxation study of amide (DMF and NMA) with non polar solute (DX) at various concentrations at 25 o C employing Time Domain Reflectometry (TDR) in the frequency range of 10 MHz-30 GHz. The complex permittivity spectra of DMF-DX and NMA-DX have been fitt...

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Section: Resultsmentioning

confidence: 99%

Dielectric Relaxation Study of Aqueous Amides in Non-Polar Solute Using Picoseconds Time Domain Technique

Mahajan¹,

Kumbharkhane²

2012

IJBBB

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“…Based on the statistical behavior of solute-solvent interaction [36], the luzar model assumes that only soluteesolute and solutesolvent pairs are formed in the alcohol-DMF mixture. The static permittivity and Kirkwood correlation factor "g i " in mixture are given by Ref.…”

Section: The Luzar Modelmentioning

confidence: 99%

Hydrogen bond analysis in alcohol (1-Propanol, 2-Propanol and Glycerol)-DMF mixtures based on dielectric spectroscopy

Jia

Jie

Wang

2015

Journal of Molecular Structure

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“…12 Much research work has been carried out on dielectrics of liquids such as alcohols, bio-polymers, etc. [13][14][15][16][17][18][19][20] The key point of these studies were to understand the structure of benzylamine in its pure and alteration of benzylamine in 1,2,6-hexanetriol. The present work deals with time domain dielectric relaxation study of benzylamine in 1,2,6-hexanetriol at 25 C in the frequency range of 10 MHz to 30 GHz.…”

Section: Introductionmentioning

confidence: 99%

Dielectric properties of benzylamine in 1,2,6-hexanetriol mixture using time domain reflectometry technique

Swami¹,

Hudge

Pawar³

2016

J. Adv. Dielect.

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The dielectric properties of binary mixtures of benzylamine-1,2,6-hexantriol mixtures at different volume fractions of 1,2,6-hexanetriol have been measured using Time Domain Reflectometry (TDR) technique in the frequency range of 10 MHz to 30 GHz. Complex permittivity spectra were fitted using Havriliak-Negami equation. By using least square fit method the dielectric parameters such as static dielectric constant (" 0 ), dielectric constant at high frequency (" 1 ), relaxation time (ps) and relaxation distribution parameter () were extracted from complex permittivity spectra at 25 C. The intramolecular interaction of different molecules has been discussed using the Kirkwood correlation factor, Bruggeman factor. The Kirkwood correlation factor (g f ) and effective Kirkwood correlation factor (g eff ) indicate the dipole ordering of the binary mixtures.

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Structural Behavior of Alcohol−1,4-Dioxane Mixtures through Dielectric Properties Using TDR

Cited by 35 publications

References 26 publications

Dielectric Relaxation Study of Aqueous Amides in Non-Polar Solute Using Picoseconds Time Domain Technique

Dielectric Relaxation Study of Aqueous Amides in Non-Polar Solute Using Picoseconds Time Domain Technique

Hydrogen bond analysis in alcohol (1-Propanol, 2-Propanol and Glycerol)-DMF mixtures based on dielectric spectroscopy

Dielectric properties of benzylamine in 1,2,6-hexanetriol mixture using time domain reflectometry technique

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