Figure 5.

(A) Schematic illustration of the fluorometric assay for protease activity. Reprinted with permission from ref. [55]. Copyright 2018, Elsevier. (B) Synthetic route of TPE derivatives, schematic drawing of the ratiometric color changes of fibers, and grafting process of PhB on electrospun PSMA fibers. Reprinted with permission from ref. [56]. Copyright 2017, American Chemical Society. (C) Schematic illustration of the mechanism of the ratiometric detection of protamine and trypsin based on a nanohybrid probe. Reprinted with permission from ref. [57]. Copyright 2019, Elsevier.