Figure 1.

(a) BBQ molecular structure. (b) SEM micrograph of BBQ-doped electrospun fibers with random orientation. The fibers are uniform, defect-free, and highly flexible. (c) Unidirectional, aligned fibers. (d) Fluorescence micrograph of a single fiber, showing a uniform and bright emission, and highlighting the homogeneous presence of the embedded dye and the lack of appreciable clustering effects. (e–g) Schematics (e) and optical micrographs of water droplets and corresponding WCA values for the direction parallel (f, x-direction) and perpendicular (g, y-direction) to the fiber alignment axis.