Polymer functionalized nanoparticles in liquid crystals: combining PDLCs with LC nanocomposites

Soft Matter ◽  
2018 ◽  
Vol 14 (42) ◽  
pp. 8580-8589
Author(s):  
Safiya Allie ◽  
Ignacio Hegoburu ◽  
Min Jeong Shin ◽  
Jung Young Jung ◽  
Violeta Toader ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Liquid Crystals ◽  
Ethylene Oxide ◽  
Phase Behaviour ◽  
Functionalized Nanoparticles ◽  
Functionalized Gold Nanoparticles ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Phase behaviour of poly(ethylene oxide) (PEO) and PEO functionalized gold nanoparticles blended with 5CB is characterized and thermodynamically modelled.

Tunable and Reversible Aggregation of Poly(ethylene oxide-st-propylene oxide) Grafted Gold Nanoparticles

Langmuir ◽  
2010 ◽  
Vol 26 (14) ◽  
pp. 12321-12329 ◽  
Author(s):  
Céline Durand-Gasselin ◽  
Mathieu Capelot ◽  
Nicolas Sanson ◽  
Nicolas Lequeux
Keyword(s):  
Gold Nanoparticles ◽  
Ethylene Oxide ◽  
Propylene Oxide ◽  
Reversible Aggregation ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Ion-Conducting Flexible Thin Films of Composites from Poly(ethylene oxide) and Nematic Liquid Crystals E8—Characterization by Impedance and Dielectric Relaxation Spectroscopy

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4465
Author(s):  
Georgi B. Hadjichristov ◽  
Todor E. Vlakhov ◽  
Yordan G. Marinov ◽  
Nicola Scaramuzza
Keyword(s):  
Thin Films ◽  
Liquid Crystals ◽  
Ethylene Oxide ◽  
Dielectric Relaxation ◽  
Electrical Impedance ◽  
Nematic Liquid Crystals ◽  
Molecular Organization ◽  
Poly Ethylene Oxide ◽  
Ion Conducting ◽  
Poly Ethylene

Complex electrical impedance and dielectric spectroscopy were applied to study the dielectric relaxations and their thermal behavior in ion-conducting composites/complexes from polymer poly(ethylene oxide) (PEO) and E8 nematic liquid crystals (LCs), at the compositional ratio PEO:E8 = 70:30 wt%. Flexible thin films of PEO/E8 with a thickness of 150 μm were inspected, as well as such films from Na+ ion-conducting electrolyte PEO/E8/NaIO4 with the same PEO:E8 compositional ratio, but additionally containing 10 wt.% from the salt sodium metaperiodate (NaIO4) as a dopant of Na+ ions. The molecular dynamics, namely the dielectric relaxation of PEO/E8 and PEO/E8/NaIO4, were characterized through analyses of complex impedance and dielectric spectra measured in the frequency range of 1 Hz–1 MHz, under variation of temperature from below to above the glass-transition temperature of these composites. The relaxation and polarization of dipole formations in PEO/E8 and PEO/E8/NaIO4 were evidenced and compared in terms of both electrical impedance and dielectric response depending on temperature. The results obtained for molecular organization, molecular relaxation dynamics, and electric polarization in the studied ion-conducting polymer/LC composites/complexes can be helpful in the optimization of their structure and performance, and are attractive for applications in flexible organic electronics, energy storage devices, and mechatronics.

Ion electrolytic flexible composite from poly(ethylene oxide) and E8 nematic liquid crystals

2019 ◽  
Author(s):  
Georgi B. Hadjichristov ◽  
Yordan G. Marinov ◽  
Alexander G. Petrov ◽  
Hari Krishna Koduru ◽  
Nicola Scaramuzza
Keyword(s):  
Liquid Crystals ◽  
Ethylene Oxide ◽  
Nematic Liquid Crystals ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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