Kim, Si Eun Lee, Yu-Ri Kim, Minseong Seo, Eunyong Paik, Hyun-Jong Kim, Jin Chul Jeong, Ji-Eun Park, Young Il Kim, Byeong-Su Lee, Sang-Ho 2024-01-19T12:31:50Z 2024-01-19T12:31:50Z 2022-04-05 2022-03 1759-9954 https://pubs.kist.re.kr/handle/201004/115550 Controlling the topology of a polymer is essential in determining its physical properties and processing. Even after numerous studies, obtaining a diverse array of topologies, particularly within the framework of hyperbranched systems, remains challenging. Here, we propose a synthetic approach to obtain highly tunable hyperbranched polyglycidol (hb-PG) using a frustrated Lewis pair of pyridine or tributylamine along with tris(pentafluorophenyl)borane, B(C6F5)(3), that not only influences the preferred activated monomer mechanism through hydrogen bonding with the glycidol monomer, but also facilitates the formation of unique polymer topologies. Notably, the frustrated Lewis pair containing pyridine was found to yield a branched polymer carrying cyclic structures (branched cyclic polymers) with an increased degree of branching, whereas the more sterically hindered tributylamine yielded hb-PG without a cyclic structure; these results were confirmed by MALDI-ToF analyses. Based on the unique topologies of the PGs, significant correlations between the topology and the bulk and solution states were investigated using SEC, DSC, and H-1 NMR diffusion-ordered spectroscopy. English Royal Society of Chemistry Highly tunable metal-free ring opening polymerization of glycidol into various controlled topologies catalyzed by frustrated lewis pairs Article 10.1039/d1py01442k 1 Polymer Chemistry, v.13, no.9, pp.1243 - 1252 Polymer Chemistry 13 9 1243 1252 N scie scopus 000750184200001 2-s2.0-85125838884 Polymer Science Polymer Science Article CATIONIC-POLYMERIZATION GREEN SYNTHESIS POLYMERS COPOLYMERIZATION ARCHITECTURE DEGRADATION POLYETHERS MONOMER ETHER HYPERBRANCHED POLYGLYCEROLS