Thermoreversible organogels

On the other hand, organogelators are low-weight organic molecules that are able to form thermoreversible physical gels in a variety of solvents and at very low concentrations (< 1 % w/w). The solvent molecules are immobilized, and strongly isotropic structures are formed mainly in the shape of fibers, but also ribbons, platelets, or cylinders. Several examples demonstrate the use of organogels to direct the formation of porous silica and titania fibers (74—76). However, these molecular templates are rarely employed for the preparation of ordered micro- and mesoporous materials. 

Good mechanical properties, good organogelation property Produce thermoreversible transparent gel... 

Hermes et al. investigated the influence of secondary structure on the thermoreversible gelation of a PEO-PZLL block copolymer. They varied the secondary structure of the PZLL block by adjusting the stereosequences of the Z-lysine segments in a way that polypeptide block forms a random coil, a (3-sheet, or an a-helix [57]. The tendency for organogelation increases for random coil < a-helix < (3-sheet. 

The pharmaceutical industry has taken increase interest in organogels due to the discovery of biocompatible organogelators in recent years. As compared to its hydrogel counterpart, organogels offer more as they are thermodynamically stable at ambient conditions and thermoreversible under suitable conditions. In addition. 

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