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Low-molecular weight gelators (LMWG) are small molecules (Mw < ~1 kDa), whichform self-assembled fibrillar networks (SAFiN) hydrogels in water. The greatmajority of SAFiN gels is described by an entangled network of self-assembledfibers, in analogy to a polymer in a good solvent. Here, fibrillation of abiobased glycolipid bolaamphiphile is triggered by Ca2+ or Ag+ ions, added toits diluted micellar phase. The resulting SAFiN, which forms hydrogel above 0.5wt%, has a ``nano-fishnet'' structure, characterized by a fibrous network ofboth entangled fibers and $\beta$-sheets-like rafts, generally observed forsilk fibroin, actin hydrogels or mineral imogolite nanotubes, but generally notknown for SAFiN. This work focuses on the strength of the SAFIN gels, theirfast recovery after applying a mechanical stimulus (strain) and their unusualresistance to temperature, studied by coupling rheology to small angle X-rayscattering (rheo-SAXS) using synchrotron radiation. The Ca2+-based hydrogelkeeps its properties up to 55{\textdegree}C, while the Ag+-based gel shows aconstant elastic modulus up to 70{\textdegree}C, without appearance of anygel-to-sol transition temperature. Furthermore, the glycolipid is obtained byfermentation from natural resources (glucose, rapeseed oil), thus showing thatnaturally-engineered compounds can have unprecedented properties, when comparedto the wide range of chemically derived amphiphiles.

Shear recovery and temperature stability of Ca2+ and Ag+ glycolipid fibrillar metallogels with unusual $\beta$-sheet-like domains