scholarly journals Multifunctional ionic hybrid poly(propyleneimine) dendrimers surrounded by carbazole dendrons: liquid crystals, optical and electrochemical properties

RSC Advances ◽  
2015 ◽  
Vol 5 (81) ◽  
pp. 65932-65941 ◽  
Author(s):  
Susana Castelar ◽  
Pilar Romero ◽  
José-Luis Serrano ◽  
Joaquín Barberá ◽  
Mercedes Marcos
Keyword(s):  
Liquid Crystals ◽  
Electrochemical Properties ◽  
Self Assembly ◽  
Photoluminescence Properties ◽  
Columnar Mesophases

Hybrid ionic dendrimers prepared via ionic self-assembly by grafting of a cationic PPI dendrimer with bifunctional electroactive carbazole dendrons, display photoluminescence properties and self-assembly into nematic, smectic or columnar mesophases.

scholarly journals Electrochemical Properties of Lipid Membranes Self-Assembled from Bicelles

Membranes ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 11
Author(s):  
Damian Dziubak ◽  
Kamil Strzelak ◽  
Slawomir Sek
Keyword(s):  
Electrochemical Properties ◽  
Self Assembly ◽  
Lipid Membranes ◽  
Lipid Membrane ◽  
Membrane Resistance ◽  
Electrochemical Characteristics ◽  
Freeze Thaw ◽  
Lipid Films ◽  
Supported Lipid Membranes

Supported lipid membranes are widely used platforms which serve as simplified models of cell membranes. Among numerous methods used for preparation of planar lipid films, self-assembly of bicelles appears to be promising strategy. Therefore, in this paper we have examined the mechanism of formation and the electrochemical properties of lipid films deposited onto thioglucose-modified gold electrodes from bicellar mixtures. It was found that adsorption of the bicelles occurs by replacement of interfacial water and it leads to formation of a double bilayer structure on the electrode surface. The resulting lipid assembly contains numerous defects and pinholes which affect the permeability of the membrane for ions and water. Significant improvement in morphology and electrochemical characteristics is achieved upon freeze–thaw treatment of the deposited membrane. The lipid assembly is rearranged to single bilayer configuration with locally occurring patches of the second bilayer, and the number of pinholes is substantially decreased. Electrochemical characterization of the lipid membrane after freeze–thaw treatment demonstrated that its permeability for ions and water is significantly reduced, which was manifested by the relatively high value of the membrane resistance.

Synthesis, Characterization, Investigation of Capacitance and Redox Properties of Self-assembled Phe-Phe with Ferrocene Conjugates

2021 ◽  
Author(s):  
Om Shanker Tiwari
Keyword(s):  
Nucleic Acid ◽  
Electrochemical Properties ◽  
Self Assembly ◽  
Peptide Nucleic Acid ◽  
Redox Properties ◽  
Self Assembled ◽  
Acid Unit

The synthesis, nanostructure self-assembly and electrochemical properties of a series of ferrocene conjugated peptides derived from the dipeptide Phe-Phe, nucleoside and the peptide nucleic acid unit which are covalently attached...

3D Anhydrous Proton-Transporting Nanochannels Formed by Self-Assembly of Liquid Crystals Composed of a Sulfobetaine and a Sulfonic Acid

2013 ◽  
Vol 135 (41) ◽  
pp. 15286-15289 ◽  
Author(s):  
Bartolome Soberats ◽  
Masafumi Yoshio ◽  
Takahiro Ichikawa ◽  
Satomi Taguchi ◽  
Hiroyuki Ohno ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Self Assembly ◽  
Sulfonic Acid

scholarly journals Temperature-Dependent X-Ray Studies of Discotic Hexagonal Columnar Mesophases in Trinuclear Gold(I) Pyrazolate Complex

2021 ◽  
Vol 17 (3) ◽  
pp. 285-294
Author(s):  
Mohamad Azani Abd Khadir Jalani ◽  
Hendrik O. Lintang ◽  
Siew Ling Lee ◽  
Juan Matmin ◽  
Nur Fatiha Ghazalli ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Variable Temperature ◽  
Gold Complex ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Heating And Cooling ◽  
Depth Study ◽  
Columnar Mesophases ◽  
Hexagonal Columnar

Gold(I) pyrazolate complex ([Au3Pz3]C10TEG) has been widely studied due to its interesting liquid crystalline properties by exhibiting the discotic hexagonal columnar arrangement. Generally, the liquid crystalline properties of the gold complex were confirmed based on their differential scanning calorimetry thermogram and polarized optical microscopy (POM) images. However, there is still no in-depth study on the phase transition in liquid crystals of [Au3Pz3]C10TEG especially on its structural change at variable temperature. In this study, the resulting liquid crystalline properties of [Au3Pz3]C10TEG upon being heated and cooled was extensively demonstrated via variable-temperature POM (VT-POM) and small angle X-ray scattering (VT-SAXS). Based on the VT-POM images, it was indicated that [Au3Pz3]C10TEG displayed a fan-shaped texture for typical arrangements of discotic hexagonal columnar of liquid crystals. Moreover, VT-SAXS results was in good agreement with the VT-POM images as it showed that [Au3Pz3]C10TEG might consist of two types of stacking system, which are ordered and disordered hexagonal discotic arrangements. Likewise, VT-SAXS analysis also demonstrated that hexagonal columnar mesophase of [Au3Pz3]C10TEG could be recovered even after the heating and cooling for two cycles.

Trithiazolyl-1,3,5-triazines bearing decyloxybenzene moieties: synthesis, photophysical and electrochemical properties, and self-assembly behavior

2018 ◽  
Vol 16 (19) ◽  
pp. 3584-3595 ◽  
Author(s):  
Shin-ichiro Kato ◽  
Satoshi Jin ◽  
Terutaka Kimura ◽  
Naoki Yoshikawa ◽  
Daiki Nara ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Self Assembly ◽  
Self Assembling ◽  
Assembly Behavior

We synthesized the first members of trithiazolyl-1,3,5-triazines that combine attractive photophysical and self-assembling properties.

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