SEARCH Articles Figures Tables Acid catalysis epoxide ring opening Acid catalysis of epoxide ring opening Al—O—Ln Motif for Ring-Opening Polymerization Catalysis Catalysis ring-opening polymerization Lewis acid catalysis epoxide ring opening Metal-Free Catalysis in Ring-Opening Polymerization Nucleophilic catalysis, ring-opening Organic catalysis, ring-opening Ring catalysis Ring opening metal catalysis Ring-opening polymerization , catalysis using