Highly active cobalt(II) and copper(II) complexes supported by aminomethylquinoline mediating stereoselective ring-opening polymerization of rac-lactide

Lee, Jaegyeong; Nayab, Saira; Kumar, Ameet; Kim, Dongil; Jung, Hyewon; Lee, Sang-Ho; Cho, Daeheum; Lee, Hyosun

doi:10.1002/bkcs.12828

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Highly active cobalt(II) and copper(II) complexes supported by aminomethylquinoline mediating stereoselective ring-opening polymerization of rac-lactide

Lee, Jaegyeong;
Nayab, Saira;
Kumar, Ameet;
Kim, Dongil;
Jung, Hyewon;
... Cho, Daeheum;
... Lee, Hyosun;
외 1명

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초록

Cobalt(II) and copper(II) complexes supported by 4-(quinolin-2-ylmethyl)morpholine (L) were characterized, and their reactivity toward the ring-opening polymerization (ROP) of rac-lactide (rac-LA) was studied. The use of [LMCl2]/(LiOPr)-Pr-i and [LMCl2]/LiMe (M = Co, Cu) resulted in over 95% conversion within 10 min at 25 degrees C. The effect of the initiating group and geometry of the metal complexes steered the heterotactic enchainment of the resultant polylactide(PLA). The Co(II)/LiMe system represents the first example of the ROP of rac-LA with high heterotactic enchainment (P-r = 0.92) with 98% conversion at 0 degrees C.

키워드

aminomethylquinoline; cobalt-complex; copper-complex; heterotactic PLA; ring-opening polymerization; ETHYLENE TETRAMERIZATION; METHYL-METHACRYLATE; STRUCTURAL-CHARACTERIZATION; LIGANDS; TRIMERIZATION; CATALYST; OLIGOMERIZATION; DERIVATIVES; CU(II); TRI

제목: Highly active cobalt(II) and copper(II) complexes supported by aminomethylquinoline mediating stereoselective ring-opening polymerization of rac-lactide

저자: Lee, Jaegyeong; Nayab, Saira; Kumar, Ameet; Kim, Dongil; Jung, Hyewon; Lee, Sang-Ho; Cho, Daeheum; Lee, Hyosun

DOI: 10.1002/bkcs.12828

발행일: 2024-04

유형: Article

저널명: Bulletin of the Korean Chemical Society

권: 45

호: 4

페이지: 317 ~ 321

언어: ENG

출판사: WILEY-V C H VERLAG GMBH

발행국가: 독일

분량: 5 페이지

ISSN: E 1229-5949
P 0253-2964