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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;
- ... Lee, Sang-Ho;
- 외 2명
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4초록
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; METHYL-METHACRYLATE; STRUCTURAL-CHARACTERIZATION; LIGANDS; DERIVATIVES; CU(II); PRECATALYSTS; MAGNESIUM; ZINC(II); ZN(II)
- 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
- 발행일
- 2024-04
- 유형
- Article
- 권
- 45
- 호
- 4
- 페이지
- 317 ~ 321