Figure 2

Microscopic images of diporphyrin-based structures. (a) Optical transmission images of LSTA-produced structures under non-polarised white light (halogen lamp). (b) Field emission scanning electron microscope (FE-SEM) images of an LSTA-produced petal-like structure and (c) of structures obtained by natural drying with an inset of the corresponding optical transmission image. Optical response dependent on polarisation angle