Insight into Asphaltene Nanoaggregate Structure Inferred by Small Angle Neutron and X-ray Scattering

2011 ◽  
Vol 115 (21) ◽  
pp. 6827-6837 ◽  
Author(s):  
Joëlle Eyssautier ◽  
Pierre Levitz ◽  
Didier Espinat ◽  
Jacques Jestin ◽  
Jérémie Gummel ◽  
...  
Keyword(s):  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Insight Into ◽  
Ray Scattering

scholarly journals Thermoresponsive polymer assemblies via variable temperature liquid-phase transmission electron microscopy and small angle X-ray scattering

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Joanna Korpanty ◽  
Lucas R. Parent ◽  
Nicholas Hampu ◽  
Steven Weigand ◽  
Nathan C. Gianneschi
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Small Angle ◽  
Variable Temperature ◽  
X Ray ◽  
X Ray Scattering ◽  
Transmission Electron ◽  
Temperature Liquid ◽  
Insight Into ◽  
Ray Scattering

AbstractHerein, phase transitions of a class of thermally-responsive polymers, namely a homopolymer, diblock, and triblock copolymer, were studied to gain mechanistic insight into nanoscale assembly dynamics via variable temperature liquid-cell transmission electron microscopy (VT-LCTEM) correlated with variable temperature small angle X-ray scattering (VT-SAXS). We study thermoresponsive poly(diethylene glycol methyl ether methacrylate) (PDEGMA)-based block copolymers and mitigate sample damage by screening electron flux and solvent conditions during LCTEM and by evaluating polymer survival via post-mortem matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI-IMS). Our multimodal approach, utilizing VT-LCTEM with MS validation and VT-SAXS, is generalizable across polymeric systems and can be used to directly image solvated nanoscale structures and thermally-induced transitions. Our strategy of correlating VT-SAXS with VT-LCTEM provided direct insight into transient nanoscale intermediates formed during the thermally-triggered morphological transformation of a PDEGMA-based triblock. Notably, we observed the temperature-triggered formation and slow relaxation of core-shell particles with complex microphase separation in the core by both VT-SAXS and VT-LCTEM.

Insight into the nanostructure of anisotropic cellulose aerogels upon compression

Soft Matter ◽  
2019 ◽  
Vol 15 (41) ◽  
pp. 8372-8380 ◽  
Author(s):  
Harald Rennhofer ◽  
Sven F. Plappert ◽  
Helga C. Lichtenegger ◽  
Sigrid Bernstorff ◽  
Michael Fitzka ◽  
...  
Keyword(s):  
Small Angle ◽  
Compressive Strain ◽  
Cellulose Ii ◽  
Stress Strain ◽  
X Ray ◽  
X Ray Scattering ◽  
Insight Into ◽  
Ray Scattering

In this article we report on the nanostructural changes of a cellulose II aerogel network during compressive strain of up to 80%, which are investigated by in situ small angle X-ray scattering and linked to the corresponding stress–strain curves.

A new insight into the nanostructure of alkylammonium alkanoates based ionic liquids in water

2016 ◽  
Vol 18 (16) ◽  
pp. 11497-11502 ◽  
Author(s):  
Umme Salma ◽  
Paolo Ballirano ◽  
Marianna Usula ◽  
Ruggero Caminiti ◽  
Natalia V. Plechkova ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Small Angle ◽  
Alkyl Chain ◽  
X Ray ◽  
X Ray Scattering ◽  
Chain Lengths ◽  
Insight Into ◽  
Ray Scattering

In this paper, small angle X-ray scattering has been used to study a series of ionic liquids, alkylammonium alkanoates ([N0 0 0 n][CmCO2]), with varying alkyl chain lengths in the cation and the anion.

Structural Insight into the Self-Assembly of a Pharmaceutically Optimized Insulin Analogue Obtained by Small-Angle X-ray Scattering

2020 ◽  
Vol 17 (8) ◽  
pp. 2809-2820
Author(s):  
Lasse Sander Dreyer ◽  
Jesper Nygaard ◽  
Leila Malik ◽  
Thomas Hoeg-Jensen ◽  
Rasmus Høiberg-Nielsen ◽  
...  
Keyword(s):  
Small Angle ◽  
Self Assembly ◽  
Insulin Analogue ◽  
The Self ◽  
X Ray ◽  
X Ray Scattering ◽  
Structural Insight ◽  
Insight Into ◽  
Ray Scattering

scholarly journals Structural insight into intermediate filament assembly using small-angle X-ray scattering

2006 ◽  
Vol 62 (a1) ◽  
pp. s141-s141
Author(s):  
A. V. Sokolova ◽  
L. Kreplak ◽  
L. P. Kurochkina ◽  
D. I. Svergun ◽  
T. Wedig ◽  
...  
Keyword(s):  
Small Angle ◽  
Intermediate Filament ◽  
X Ray ◽  
Filament Assembly ◽  
X Ray Scattering ◽  
Structural Insight ◽  
Insight Into ◽  
Ray Scattering

A Revised O2 Reduction Model in Li-O2 Batteries as Revealed by in Situ Small Angle X-Ray Scattering

2019 ◽  
Author(s):  
Christian Prehal ◽  
Aleksej Samojlov ◽  
Manfred Nachtnebel ◽  
Manfred Kriechbaum ◽  
Heinz Amenitsch ◽  
...  
Keyword(s):  
Small Angle ◽  
Wide Angle ◽  
Reduction Mechanism ◽  
Reduction Model ◽  
X Ray ◽  
X Ray Scattering ◽  
O2 Reduction ◽  
Ray Scattering

<b>Here we use in situ small and wide angle X-ray scattering to elucidate unexpected mechanistic insights of the O2 reduction mechanism in Li-O2 batteries.<br></b>

In situ Time-Resolved Small-Angle X-ray Scattering Reveals the Formation Kinetics of Polyelectrolyte Complex Micelles

2019 ◽  
Author(s):  
Hao Wu ◽  
Jeffrey Ting ◽  
Siqi Meng ◽  
Matthew Tirrell
Keyword(s):  
Small Angle ◽  
Self Assembly ◽  
Electrostatic Interactions ◽  
Polyelectrolyte Complex ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Kinetics Of ◽  
Ray Scattering

We have directly observed the <i>in situ</i> self-assembly kinetics of polyelectrolyte complex (PEC) micelles by synchrotron time-resolved small-angle X-ray scattering, equipped with a stopped-flow device that provides millisecond temporal resolution. This work has elucidated one general kinetic pathway for the process of PEC micelle formation, which provides useful physical insights for increasing our fundamental understanding of complexation and self-assembly dynamics driven by electrostatic interactions that occur on ultrafast timescales.

Sign in / Sign up

Export Citation Format

Share Document