Heat-set supramolecular organogels composed of β-cyclodextrin and substituted aniline in N,N-dimethylformamide

Self-assembly of organogels via new luminol imide derivatives: diverse nanostructures and substituent chain effect

“…As for the spectrum of the TC18-Lu xerogel from petroleum ether, some main peaks were observed at 3,242, 2,918, 2,848, 1,709, 1,648, and 1,469 cm −1 . These bands can be assigned to the N-H stretching, methylene stretching, carbonyl group stretching, amide I band, and methylene shearing, respectively [46-48], In comparison, in the spectrum of TC18-Lu in chloroform solution, the corresponding characteristic peaks appeared at 1,743 and 1,586 cm −1 , respectively. The obvious shifts indicated the strong intermolecular hydrogen bonding interaction between imide compounds.…”

Oleogel: A promising base for transdermal formulations

“…The presence of intermolecular hydrogen bonding can be confirmed by NMR spectroscopy. [10,27] Shape of fibrillar network of organogelators can be studied by small-angle neutron scattering (SANS) technique. [30] Information about morphology, specific interactions, internal mobility of the constituents, and molecular organization of organogels can be obtained by NMR measurement, which involves magic angle spinning (MAS) in the solid-state NMR, spin relaxation times, nuclear overhauser enhancements Figure 5: Schematic representation of the interaction between two colloidal silica particles (top), the formation of chain structure (Center) and the development of 'Chickenwire' structure as well as the thixotropy (bottom): Mean diameter of colloidal silica particle is 10 nm (NOE), or multiple-quantum (MQ) spectroscopy, the pulse field gradient (PFG) technique, and magnetic resonance imaging (MRI).…”

“…They give clear solution at room temperature but solidify and turn into gel on heating to higher temperature. [27] The phenomenon of interaction between two colloidal silica particles and viscosity is represented in Figure 5. When dispersed in a liquid, the silanol groups on the surface of colloidal silicon dioxide form hydrogen bonds with each other, either directly or indirectly through the liquid.…”

“…[11] These organogelators form fibers, strands, tapes or helix via unidimensional growth of the molecules. [2,8,11] Liquid paraffin [23] Sorbitan tristearate + Lecithin Sunflower oil [24] Phytosterol + Oryzaznol Various edible oils [25] TAG, DAG, MAG, FA, Waxes Various edible oils [25] 12-Hydroxystearic acid (12-HAS) Soyabean oil or capric/ caprylic triglyceride [26] ß-Cyclodextrin (ß-CD) Para substituted anilines (ps-An) Lithium chloride in N, N-dimethyl formamide [27] Triazine functionalized with a-amino acidic appendages Haloalkanes, and aromatic solvents [28] Figure 2: Method of formation of organogels by fluid-filled fiber mechanism [8,31] Figure 3: Method of formation of organogels by solid fiber mechanism [8,31] In case of cinnamic acid salt gelators it has been investigated that, prerequisite for the one-dimensional (1D) growth of the gel fibrils is mainly governed by the 1D hydrogen-bonded networks involving the ion pair. Whereas all the non-gelators show either two-(2D) or zero-dimensional (0D) hydrogen bonded assemblies involving the ion pair.…”

Regulation of substituent groups on morphologies and self-assembly of organogels based on some azobenzene imide derivatives

“…Such organogels have some advantages over polymer gels: the molecular structure of the gelator is defined, and the gel process is usually reversible. Such properties make it possible to design various functional gel systems and produce more complicated and defined, as well as controllable, nanostructures [21-25]. …”