Structural anomaly and dynamic heterogeneity in cycloether/water binary mixtures: Signatures from composition dependent dynamic fluorescence measurements and computer simulations

2016 ◽  
Vol 144 (12) ◽  
pp. 124506 ◽  
Author(s):  
Sandipa Indra ◽  
Biswajit Guchhait ◽  
Ranjit Biswas
Keyword(s):  
Binary Mixtures ◽  
Computer Simulations ◽  
Dynamic Heterogeneity ◽  
Structural Anomaly ◽  
Fluorescence Measurements ◽  
Dynamic Fluorescence

Field-induced anti-nematic and biaxial ordering in binary mixtures of discotic mesogens and spherical magnetic nanoparticles

Soft Matter ◽  
2020 ◽  
Vol 16 (47) ◽  
pp. 10667-10675
Author(s):  
Stavros D. Peroukidis ◽  
Sabine H. L. Klapp ◽  
Alexandros G. Vanakaras
Keyword(s):  
Magnetic Nanoparticles ◽  
Binary Mixtures ◽  
Computer Simulations ◽  
Liquid Crystalline ◽  
Magnetic Particles ◽  
Equilibrium Structure ◽  
Discotic Mesogens ◽  
External Stimuli

Using computer simulations we explore the equilibrium structure and response to external stimuli of complex magnetic hybrids consisting of magnetic particles in discotic liquid crystalline matrices.

Lifshitz phase: the microscopic structure of aqueous and ethanol mixtures of 1,n-diols

2017 ◽  
Vol 19 (23) ◽  
pp. 14992-15004 ◽  
Author(s):  
Martina Požar ◽  
Aurélien Perera
Keyword(s):  
Ethylene Glycol ◽  
Binary Mixtures ◽  
Computer Simulations ◽  
Microscopic Structure

We study binary mixtures of ethylene glycol and 1,3-propandiol with water or ethanol using computer simulations.

scholarly journals The role of polymer flexibility on the interaction with surfactant micelles: poly(vinyl alcohol) and sodium dodecyl sulphate aqueous micelle interactions studied by dynamic fluorescence quenching

1995 ◽  
Vol 73 (11) ◽  
pp. 1765-1772 ◽  
Author(s):  
Jan. Van Stam ◽  
Nadine. Wittouck ◽  
Frans C. De Schryver ◽  
Mats Almgren ◽  
Maria da Graça Miguel
Keyword(s):  
Fluorescence Quenching ◽  
Sodium Dodecyl Sulphate ◽  
Vinyl Alcohol ◽  
Surfactant Concentration ◽  
Sodium Dodecyl ◽  
Critical Aggregation Concentration ◽  
Poly Vinyl Alcohol ◽  
Fluorescence Measurements ◽  
Aggregation Numbers ◽  
Dynamic Fluorescence

The interactions between poly(vinyl alcohol) and the surfactant sodium dodecyl sulphate in aqueous solutions have been investigated by means of static and dynamic fluorescence measurements. By static fluorescence measurements the onset of interaction, the critical aggregation concentration, is determined to be 6.5 mM at 20 °C and 7.0 mM at 40 °C. By dynamic fluorescence measurements without added quencher the influence on the lifetime of the fluorescent probe, pyrene, by the presence of the polymer is investigated. From measurements with an added quencher, dimethylbenzophenone, the surfactant aggregation numbers of the micellar aggregates formed upon interaction between the surfactant and the polymer and the quenching rate constant are obtained. At the two polymer concentrations, i.e., 0.2% and 2.0%, the surfactant aggregation numbers at low surfactant concentration are very small, but increase rapidly with increasing surfactant concentration. Comparisons are made with results from a system where poly(ethylene oxide) instead of poly(vinyl alcohol) is the polymer. Key words: dynamic fluorescence quenching, polymer–surfactant interactions, aggregation numbers.

Simple and complex disorder in binary mixtures with benzene as a common solvent

2015 ◽  
Vol 17 (15) ◽  
pp. 9885-9898 ◽  
Author(s):  
Martina Požar ◽  
Jean-Baptiste Seguier ◽  
Jonas Guerche ◽  
Redha Mazighi ◽  
Larisa Zoranić ◽  
...  
Keyword(s):  
Binary Mixtures ◽  
Computer Simulations ◽  
Aqueous Mixtures ◽  
Complex Disorder

Substituting benzene for water in computer simulations of binary mixtures, allows one to study the various forms of disorder, without the complications often encountered in aqueous mixtures.

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