Molecular interactions in 1-pentanol +2-methyl-2-butanol mixtures: Static dielectric constant, viscosity and refractive index investigations at 5, 25 and 45�C

1989 ◽  
Vol 18 (8) ◽  
pp. 785-793 ◽  
Author(s):  
Alessandro D'Aprano ◽  
Ines Dorina Donato ◽  
Vincenzo Turco Liveri
Keyword(s):  
Dielectric Constant ◽  
Refractive Index ◽  
Molecular Interactions ◽  
Static Dielectric Constant ◽  
Constant Viscosity

Static dielectric constant, viscosity, and structure of pure isomeric pentanols

1981 ◽  
Vol 10 (9) ◽  
pp. 673-680 ◽  
Author(s):  
Alessandro D'Aprano ◽  
Dorina I. Donato ◽  
Valeria Agrigento
Keyword(s):  
Dielectric Constant ◽  
Static Dielectric Constant ◽  
Constant Viscosity

scholarly journals Strain Induced Electronic and Optical Properties of 2D Silicon Carbide Monolayer Using Density Functional Theory

2021 ◽  
Vol 7 (1) ◽  
pp. 60-65
Author(s):  
S. B. Sharma ◽  
R. Adhikari ◽  
K. R. Sigdel ◽  
R. Bhatta
Keyword(s):  
Silicon Carbide ◽  
Dielectric Constant ◽  
Refractive Index ◽  
Optical Properties ◽  
Density Functional ◽  
Compressive Strain ◽  
Static Dielectric Constant ◽  
Functional Theory ◽  
First Principle Calculation ◽  
Electronic And Optical Properties

Using the first principle calculation, we investigated the structural, electronic, and strain-dependent optical properties of the two-dimensional hexagonal Silicon Carbide (SiC) Monolayer. We found that the biaxial compressive strain loading gradually changes the direct bandgap SiC into indirect bandgap semiconductor. The compressive strain increases the bandgap but reduces the values of static dielectric constant and refractive index. Conversely, the biaxial tensile strain loading decreases the bandgap but increases the value of static dielectric constant and refractive index. The result shows that the electronic and optical properties of SiC can be engineered to the desired value by applying strain. The large bandgap issue for the SiC monolayer is limiting its uses in different applications which can be overcome with the help of biaxial strain.

Study of Molecular Interaction in Binary Mixtures (1-Propanol + Acetophenone)

2016 ◽  
Vol 1141 ◽  
pp. 125-130 ◽  
Author(s):  
A.N. Prajapati
Keyword(s):  
Dielectric Constant ◽  
Refractive Index ◽  
Binary Mixtures ◽  
Molecular Interaction ◽  
Structural Information ◽  
Correlation Factor ◽  
Static Dielectric Constant ◽  
Entire Concentration Range ◽  
Binary Liquid ◽  
Factor G

Studies on Physico-chemical properties of binary liquid mixtures provide information on the nature of interactions between the constituent of the binaries. Literature provides extensive data on the static dielectric constant (ε0) and refractive index (n) of liquid compounds, but the combined study of all is quite scarce. In the present work static dielectric constant (ε0) and refractive index (n) have been experimentally determined for binary liquid mixture of 1-Propanol (PrOH) with Acetophenone (ACP) over the entire concentration range of mixture composition (0.0 →1.0) at constant temperature 303 K. Static dielectric constant (ε0) and refractive index (n) for the binary mixture have been measured using high precision LCR meter (0.2 MHz) and Abbe’s refractometer respectively. Excess of static dielectric constant (ε0)E and refractive index (n)E are determined and fitted with Redlich-Kister polynomial equation to derive the binary coefficients and standard deviations. For interaction and structural information various parameters namely, Kirkwood correlation factor (g), Kirkwood effective correlation factor (geff), Kirkwood angular correlation factor (gF) and Bruggeman parameter (fB) are determined for the binary mixtures. Variations of these parameters against the concentration of constituents are discussed in terms of molecular interaction between the constituent species.

Prediction of Static Dielectric Constant (ε0) and Refractive Index (n) Using Various Models for Binary Mixtures (Acetophenone with N-Hexanol)

2016 ◽  
Vol 1141 ◽  
pp. 131-135
Author(s):  
A.N. Prajapati
Keyword(s):  
Dielectric Constant ◽  
Refractive Index ◽  
Binary Mixtures ◽  
Liquid Mixture ◽  
Polynomial Equation ◽  
Static Dielectric Constant ◽  
Mixing Models ◽  
Entire Concentration Range ◽  
Constituent Species ◽  
Lcr Meter

Static dielectric constant (ε0) and refractive index (n) have been experimentally determined for binary liquid mixture of n-Hexanol (HxOH) with Acetophenone (ACP) over the entire concentration range of mixture composition (0.0 →1.0) at constant temperature 303.15 K. Static dielectric constant (ε0) and refractive index (n) for the binary mixture have been measured using high precision LCR meter (0.2 MHz) and Abbe’s refractometer respectively. Excess of static dielectric constant (ε0)E and refractive index (n)E are determined and fitted with Redlich-Kister polynomial equation to derive the binary coefficients and standard deviations. Deviations of these parameters are discussed in terms of terms of molecular interaction between the constituent species. In the present work, comparative study of various mixing models for static dielectric constant (ε0) [Böttcher-Bordewijk (BOTT), Bruggeman (BRUG), Kraszewski (KRAZ), Looyenga (LOOY), Peon–Iglesias (P-I)] and for refractive index (n) [Oster (OST), Weiner (W), Eykman (EYK), Lorentz–Lorentz (L-L), Arago–Biot (A-G), Newton (Nw), Gladstone–Dale (G-D) and Erying–John (EJ)] have been carried out and their validity has been tested for the (n-HxOH+ACP) binary mixtures. The objective of the present work is to report the influence of nonassociative molecule on the molecular dynamics of associative molecules and validation mixing models.

scholarly journals Critical angle reflection imaging for quantification of molecular interactions on glass surface

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Guangzhong Ma ◽  
Runli Liang ◽  
Zijian Wan ◽  
Shaopeng Wang
Keyword(s):  
Refractive Index ◽  
Small Molecule ◽  
Molecular Interactions ◽  
Glass Surface ◽  
Critical Angle ◽  
Dynamic Range ◽  
Refractive Index Change ◽  
Label Free ◽  
Index Change ◽  
Sensing Range

AbstractQuantification of molecular interactions on a surface is typically achieved via label-free techniques such as surface plasmon resonance (SPR). The sensitivity of SPR originates from the characteristic that the SPR angle is sensitive to the surface refractive index change. Analogously, in another interfacial optical phenomenon, total internal reflection, the critical angle is also refractive index dependent. Therefore, surface refractive index change can also be quantified by measuring the reflectivity near the critical angle. Based on this concept, we develop a method called critical angle reflection (CAR) imaging to quantify molecular interactions on glass surface. CAR imaging can be performed on SPR imaging setups. Through a side-by-side comparison, we show that CAR is capable of most molecular interaction measurements that SPR performs, including proteins, nucleic acids and cell-based detections. In addition, we show that CAR can detect small molecule bindings and intracellular signals beyond SPR sensing range. CAR exhibits several distinct characteristics, including tunable sensitivity and dynamic range, deeper vertical sensing range, fluorescence compatibility, broader wavelength and polarization of light selection, and glass surface chemistry. We anticipate CAR can expand SPR′s capability in small molecule detection, whole cell-based detection, simultaneous fluorescence imaging, and broader conjugation chemistry.

scholarly journals Comment on “investigation of dielectric constants of water in a nano-confined pore” by H. Zhu, F. Yang, Y. Zhu, A. Li, W. He, J. Huang and G. Li, RSC Adv., 2020, 10, 8628

RSC Advances ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 5179-5181
Author(s):  
Sayantan Mondal ◽  
Biman Bagchi
Keyword(s):  
Dielectric Constant ◽  
Dielectric Constants ◽  
Static Dielectric Constant ◽  
Inherent Anisotropy ◽  
Nanoconfined Water

Neglects of inherent anisotropy and distinct dielectric boundaries may lead to completely erroneous results. We demonstrate that such mistakes can give rise to gross underestimation of the static dielectric constant of cylindrically nanoconfined water.

Sign in / Sign up

Export Citation Format

Share Document