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Preparation and Properties of a Graphene Oxide Intercalation Compound Utilizing Hydrocalumite Layered Double Hydroxide as Host Structure

Plank, Johann; Zou, Nan; Zhao, Zongbin; Dekany, Imre

Customer publications

Preparation and Properties of a Graphene Oxide Intercalation Compound Utilizing Hydrocalumite Layered Double Hydroxide as Host Structure

Plank, Johann; Zou, Nan; Zhao, Zongbin; Dekany, Imre

Particularly small graphene oxide (GO) nano sheets were synthesized and intercalated into a hydrocalumite type layered double hydroxide (Ca2Al-LDH) host structure. Synthesis of the GO intercalation compound was performed via controlled rehydration of tricalcium aluminate (Ca3Al2O6) in the presence of GO. Formation of Ca2Al-GO-LDH was evidenced from elemental, thermogravimetric, IR…
Unilamellar Vesicles from Amphiphilic Graphene Quantum Dots

Nandi, Sukhendu; Kolusheva, Sofiya; Malishev, Ravit; Trachtenberg, Alexander; Vinod, T. P.; Jelinek, Raz

Customer publications

Unilamellar Vesicles from Amphiphilic Graphene Quantum Dots

Nandi, Sukhendu; Kolusheva, Sofiya; Malishev, Ravit; Trachtenberg, Alexander; Vinod, T. P.; Jelinek, Raz

Graphene quantum dots (GQDs) have attracted considerable interest due to their unique physicochemical properties and various applications. For the first time it is shown that GQDs surface-functionalized with hydrocarbon chains (i.e., amphiphilic GQDs) self-assemble into unilamellar spherical vesicles in aqueous solution. The amphiphilic GQD vesicles exhibit multicolor luminescence that can…
Liquid-phase characterization of molecular interactions in polyunsaturated and n-fatty acid methyl esters by 1H low-field nuclear magnetic resonance

Meiri, Nitzan; Berman, Paula; Colnago, Luiz Alberto; Moraes, Tiago Bueno; Linder, Charles; Wiesman, Zeev

Customer publications

Liquid-phase characterization of molecular interactions in polyunsaturated and n-fatty acid methyl esters by 1H low-field nuclear magnetic resonance

Meiri, Nitzan; Berman, Paula; Colnago, Luiz Alberto; Moraes, Tiago Bueno; Linder, Charles; Wiesman, Zeev

To identify and develop the best renewable and low carbon footprint biodiesel substitutes for petroleum diesel, the properties of different biodiesel candidates should be studied and characterized with respect to molecular structures versus biodiesel liquid property relationships. In our previous paper, 1H low-field nuclear magnetic resonance (LF-NMR) relaxometry was investigated…
Liquid Crystalline Phase Formation in Suspensions of Solid Trimyristin Nanoparticles

Gehrer, Simone; Schmiele, Martin; Westermann, Martin; Steiniger, Frank; Unruh, Tobias

Customer publications

Liquid Crystalline Phase Formation in Suspensions of Solid Trimyristin Nanoparticles

Gehrer, Simone; Schmiele, Martin; Westermann, Martin; Steiniger, Frank; Unruh, Tobias

The presence of liquid crystalline phases in suspensions of solid lipid nanoparticles can increase the risk of their gelling upon administration through fine needles. Here we study the formation of liquid crystalline phases in aqueous suspensions of platelet-like shaped solid lipid nanoparticles. A native lecithin-stabilized trimyristin (20 wt %) suspension…
Structure and ionic conductivity of liquid crystals having propylene carbonate units

Eisele, Andreas; Kyriakos, Konstantinos; Bhandary, Rajesh; Schönhoff, Monika; Papadakis, Christine M.; Rieger, Bernhard

Customer publications

Structure and ionic conductivity of liquid crystals having propylene carbonate units

Eisele, Andreas; Kyriakos, Konstantinos; Bhandary, Rajesh; Schönhoff, Monika; Papadakis, Christine M.; Rieger, Bernhard

Liquid-crystalline compounds with a perfluorinated aromatic ring as the mesogenic core and a propylene carbonate unit were prepared and mixed with lithium bis(trifluoro-methanesulfonyl)-imide (LiTFSI). The self-assembly was driven by the interaction of the polar propylene carbonate unit. Thus it is one of the few examples of liquid crystals with only…
Controlling Interfacial Film Formation in Mixed Polymer–Surfactant Systems by Changing the Vapor Phase

Mokhtari, Tahereh; Pham, Quoc Dat; Hirst, Christopher; O’Driscoll, Benjamin M. D.; Nylander, Tommy; Edler, Karen J.; Sparr, Emma

Customer publications

Controlling Interfacial Film Formation in Mixed Polymer–Surfactant Systems by Changing the Vapor Phase

Mokhtari, Tahereh; Pham, Quoc Dat; Hirst, Christopher; O’Driscoll, Benjamin M. D.; Nylander, Tommy; Edler, Karen J.; Sparr, Emma

Here we show that transport-generated phase separation at the air?liquid interface in systems containing self-assembling amphiphilic molecules and polymers can be controlled by the relative humidity (RH) of the air. We also show that our observations can be described quantitatively with a theoretical model describing interfacial phase separation in a…