Plank, Johann; Zou, Nan; Zhao, Zongbin; Dekany, Imre
Preparation and Properties of a Graphene Oxide Intercalation Compound Utilizing Hydrocalumite Layered Double Hydroxide as Host Structure
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
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
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
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
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
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…
Synthesis of liquid crystalline thioether-functionalized hydroxypropyl cellulose esters
Ohlendorf, Peter; Greiner, Andreas
Polymer Chemistry, 2015, vol 6, 14, pp. 2734-2739DOI:10.1039/C4PY01709AVisit the full articleBack to the overview
Hydrogels from phospholipid vesicles
Gräbner, D.; Hoffmann, H.; Förster, S.; Rosenfeldt, S.; Linders, J.; Mayer, C.; Talmon, Y.; Schmidt, J.
Advances in colloid and interface science, 2014, vol 208pp. 252–263DOI:Visit the full articleBack to the overview
Hollow silica sphere colloidal crystals: insights into calcination dependent thermal transport
Ruckdeschel, P.; Kemnitzer, T. W.; Nutz, F. A.; Senker, J.; Retsch, M.
Nanoscale, 2015, vol 7, 22, pp. 10059-10070DOI:10.1039/C5NR00435GVisit the full articleBack to the overview
Plasmonic gold–poly(N-isopropylacrylamide) core–shell colloids with homogeneous density profiles: a small angle scattering study
Dulle, Martin; Jaber, Sarah; Rosenfeldt, Sabine; Radulescu, Aurel; Förster, Stephan; Mulvaney, Paul; Karg, Matthias
Physical Chemistry Chemical Physics, 2015, vol 17, 2, pp. 1354-1367DOI:10.1039/C4CP04816DVisit the full articleBack to the overview