Figure 6
From: Hydrogels with self-assembling ordered structures and their functions
Structured hydrogels synthesized by polymerization of a cationic monomer in the presence of a small amount of semi-rigid polyanion as a dopant. (a) Chemical structures of DMAPAA-Q and PBDT. (b) Appearance (inset) of as-prepared gels QP-CQ-CP-0.15 synthesized with various concentrations CQ and CP (Csulfonic, concentration of sulfonic moeity in PBDT). (c,d) Optical micrographs of as-prepared gels under parallel and crossed polarizers: (c) CP = 1, CQ = 1.5, (d) CP = 1, CQ = 2. Adapted from Ref. 72 (© 2009 Wiley-VCH).
