SEARCH Articles Figures Tables Catalyzed polymerization Indole acid-catalyzed polymerization Indole acidity Indole acids Indole pyrrole Indoles acidity Indoles pyrroles Indoles, acid-catalyzed polymerization Indolic acids Of indole Of indoles Of pyrrole Polymerization acid catalyzed Polymerization pyrrole Pyrrole acidity Pyrroles and indoles Pyrroles polymerization Pyrroles, acid-catalyzed polymerization Pyrrolic acids