scholarly journals X-Ray scattering and physicochemical studies of trialkylamine/carboxylic acid mixtures: nanoscale structure in pseudoprotic ionic liquids and related solutions

2018 ◽  
Vol 20 (27) ◽  
pp. 18639-18646 ◽  
Author(s):  
Mark N. Kobrak ◽  
Kevin G. Yager
Keyword(s):  
Ionic Liquids ◽  
Carboxylic Acid ◽  
X Ray ◽  
Spontaneous Formation ◽  
Physical Measurements ◽  
X Ray Scattering ◽  
Physicochemical Studies ◽  
Nanoscale Structure ◽  
Water Saturated ◽  
Ray Scattering

We use X-ray scattering and physical measurements to observe the spontaneous formation of nanoscale structure in water-saturated trialkylamine/carboxylic acid mixtures.

Classification of grazing-incidence small-angle X-ray scattering patterns by convolutional neural network

2020 ◽  
Vol 27 (4) ◽  
pp. 1069-1073
Author(s):  
Hiroyuki Ikemoto ◽  
Kazushi Yamamoto ◽  
Hideaki Touyama ◽  
Daisuke Yamashita ◽  
Masataka Nakamura ◽  
...  
Keyword(s):  
Neural Network ◽  
Convolutional Neural Network ◽  
Small Angle ◽  
Pair Correlation ◽  
Grazing Incidence ◽  
X Ray ◽  
X Ray Scattering ◽  
Nanoscale Structure ◽  
Ray Scattering

Grazing-incidence small-angle X-ray scattering (GISAXS) patterns have multiple superimposed contributions from the shape of the nanoscale structure, the coupling between the particles, the partial pair correlation, and the layer geometry. Therefore, it is not easy to identify the model manually from the huge amounts of combinations. The convolutional neural network (CNN), which is one of the artificial neural networks, can find regularities to classify patterns from large amounts of combinations. CNN was applied to classify GISAXS patterns, focusing on the shape of the nanoparticles. The network found regularities from the GISAXS patterns and showed a success rate of about 90% for the classification. This method can efficiently classify a large amount of experimental GISAXS patterns according to a set of model shapes and their combinations.

Amphiphilic nanostructure in choline carboxylate and amino acid ionic liquids and solutions

2020 ◽  
Vol 22 (6) ◽  
pp. 3490-3498 ◽  
Author(s):  
Shurui Miao ◽  
Rob Atkin ◽  
Gregory G. Warr
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

The liquid structures of six choline carboxylate/amino acid ionic liquids (bio-ILs) and their mixtures with water and various n-alkanols have been investigated by small-angle X-ray scattering (SAXS).

Small-Angle X-ray Scattering Study of Water Free Fuel Cell Membranes Containing Ionic Liquids†

2010 ◽  
Vol 22 (3) ◽  
pp. 803-812 ◽  
Author(s):  
S. S. Sekhon ◽  
Jin-Soo Park ◽  
Ji-Suk Baek ◽  
Sung-Dae Yim ◽  
Tae-Hyun Yang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Fuel Cell ◽  
Small Angle ◽  
Cell Membranes ◽  
Fuel Cell Membranes ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Ray Scattering

scholarly journals Ion-Specific Clustering of Metal-Amphiphile Complexes in Rare Earth Separations

2020 ◽  
Author(s):  
Srikanth Nayak ◽  
Kaitlin Lovering ◽  
Ahmet Uysal
Keyword(s):  
Aqueous Phase ◽  
Organic Phase ◽  
Immiscible Liquids ◽  
X Ray ◽  
Clustering Model ◽  
X Ray Scattering ◽  
Heavy Lanthanides ◽  
Complex Fluid ◽  
Nanoscale Structure ◽  
Ray Scattering

Aggregation and clustering of metal-amphiphile complexes formed during solvent extraction of lanthanides have been studied with small angle X-ray scattering. The nanoscale structure of the complex fluid strongly depends on the counter-ion (NO<sub>3</sub><sup>-</sup> or SCN<sup>-</sup>) and the lanthanide being extracted. As a result, it is possible to selectively transport light or heavy lanthanides from the aqueous phase into the organic phase by simply choosing NO<sub>3</sub><sup>-</sup> or SCN<sup>-</sup> as the background anion, respectively. While the organic phase containing TOMA-NO<sub>3</sub> always shows clustering, indicating the presence of stronger attractive interactions between metal-amphiphile aggregates, TOMA-SCN shows clustering as a function of the metal loading. These qualitative differences suggest that the extraction efficiency is driven by the aqueous phase conditions in NO<sub>3</sub><sup>-</sup> solutions, while it is driven by the organic phase structuring in SCN<sup>-</sup> solutions. A clustering model, that accounts for the hard sphere repulsions and short-range attractions between the aggregates, has been developed to model the X-ray scattering results. The new model successfully describes the nanoscale structure and helps understanding the mechanisms responsible for amphiphile assisted ion transport and complexation between immiscible liquids.

scholarly journals Is a medium-range order pre-peak possible for ionic liquids without an aliphatic chain?

RSC Advances ◽  
2015 ◽  
Vol 5 (63) ◽  
pp. 50938-50941 ◽  
Author(s):  
Marco Campetella ◽  
Serena De Santis ◽  
Ruggero Caminiti ◽  
Paolo Ballirano ◽  
Claudia Sadun ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Range Order ◽  
Aliphatic Chain ◽  
Medium Range Order ◽  
X Ray ◽  
Alkyl Chains ◽  
X Ray Scattering ◽  
Medium Range ◽  
Ray Scattering

The pre-peak in the X-ray scattering patterns of ionic liquids is not always due to alkyl chains. In choline–proline (a bio-compatible ionic liquid), it is due to second-shell cation–cation distances.

What is the Origin of the Prepeak in the X-ray Scattering of Imidazolium-Based Room-Temperature Ionic Liquids?

2010 ◽  
Vol 114 (50) ◽  
pp. 16838-16846 ◽  
Author(s):  
Harsha V. R. Annapureddy ◽  
Hemant K. Kashyap ◽  
Pablo M. De Biase ◽  
Claudio J. Margulis
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals Structural studies on choline-carboxylate bio-ionic liquids by x-ray scattering and molecular dynamics

2015 ◽  
Vol 143 (11) ◽  
pp. 114506 ◽  
Author(s):  
Luana Tanzi ◽  
Fabio Ramondo ◽  
Ruggero Caminiti ◽  
Marco Campetella ◽  
Andrea Di Luca ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Ionic Liquids ◽  
Structural Studies ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering
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