Nanofibers prepared by molecular self-assembly are in general not self-supporting and therefore require stabilizing scaffold structures. In fact, a lot of research in the past has been done with su pramolecular self-assembly of molecules forming a network of nanofibers used as organo/hydro gelators. But efforts to use them as a self-standing membrane or as free fibers were not strong. Therefore, the self-assembly of trisamides was also tried on a substrate, i.e., other microfiber non wovens, leading to microenanofiber composites (Fig. 4.4) used for filtration (Weiss et al., 2016).
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