Chun, M.S. Lee, C.H. Yeo, J.K. Cho, J.C. Kim, J.S. Kim, K.U. Kim, J. 2024-01-21T20:11:47Z 2024-01-21T20:11:47Z 2022-01-10 1996-01 0032-3934 https://pubs.kist.re.kr/handle/201004/144827 http://pubsapp.acs.org/cgi-bin/preprints/display?div=poly&meet=212&page=6.html We have found that the yield in the coupling reaction of active polymer with silane coupling agent for the synthesis of block copolymers was effected by the reduction of the steric effect of the chain-end. Simply, the reduction of the reactivity of the living chain-end was less pronounced to reduce the coupling yield Thus, for the syntheses of block or starbranched copolymers via the coupling methodology, the reaction conditions such as a proper choice of the coupling agent and the steric effect of the chain-end should be carefully considered together. English American Chemical Society Chain-end effect of living polymer in the coupling reactions for synthesis of block copolymers Article 1 American Chemical Society, Polymer Preprints, Division of Polymer Chemistry, v.37, no.2, pp.651 - 652 American Chemical Society, Polymer Preprints, Division of Polymer Chemistry 37 2 651 652 N scopus 2-s2.0-3242858540 Article Addition reactions Anionic polymerization Catalysis Catalysts Cationic polymerization Chemical reactions Initiators (chemical) Monomers Size exclusion chromatography Synthesis (chemical) Chain end effect Functionalized polymers Living polymer coupling Sequential monomer addition Block copolymers block copolymer