fig2
From: A 3D ordered hierarchical crystalline porous organic salt for large-sized enzyme immobilization
Figure 2. (A) SEM image of PS colloidal crystal template and corresponding FCC crystal structure perpendicular to (111) facet (inset); (B) Zoom-in view of the SEM image, size of PS nanosphere (yellow circle) and voids formed by PS nanospheres (red triangle); (C and D) SEM images of HCPOS-1, size of macropore (yellow cycle) and anti-opal structure formed by CPOS-1 (red triangle); (E and F) TEM images of HCPOS-1, size of macropore (yellow circle) and anti-opal structure formed by CPOS-1 (red triangle). SEM: Scanning electron microscopy; PS: polystyrene; FCC: face center cubic; HCPOS: hierarchical crystalline porous organic salt; CPOS: crystalline porous organic salt; TEM: transmission electron microscopy.
