Fig. 1From: Proangiogenic alginate-g-pyrrole hydrogel with decoupled control of mechanical rigidity and electrically conductivity a, b A schematic of the pyrrole group conjugation to the carboxylic acid groups of alginate with varied degrees of pyrrole substitution using carbodiimide chemistry. c Alginate-g-pyrrole hydrogels formed containing a high and low degree of conjugated pyrrole to alginate. d Images of gels formed with varied concentrations of pyrrole substitution to alginateBack to article page