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

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

doi:10.1002/bkcs.12828

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

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

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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]/LiOⁱPr and [LMCl₂]/LiMe (M = Co, Cu) resulted in over 95% conversion within 10 min at 25 °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 °C.

Original language	English
Pages (from-to)	317-321
Number of pages	5
Journal	Bulletin of the Korean Chemical Society
Volume	45
Issue number	4
DOIs	https://doi.org/10.1002/bkcs.12828
State	Published - Apr 2024

Keywords

aminomethylquinoline
cobalt-complex
copper-complex
heterotactic PLA
ring-opening polymerization

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10.1002/bkcs.12828

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

abstract = "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]/LiOiPr and [LMCl2]/LiMe (M = Co, Cu) resulted in over 95% conversion within 10 min at 25 °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 (Pr = 0.92) with 98% conversion at 0 °C.",

keywords = "aminomethylquinoline, cobalt-complex, copper-complex, heterotactic PLA, ring-opening polymerization",

author = "Jaegyeong Lee and Saira Nayab and Ameet Kumar and Dongil Kim and Hyewon Jung and Lee, {Sang Ho} and Daeheum Cho and Hyosun Lee",

note = "Publisher Copyright: {\textcopyright} 2024 Korean Chemical Society, Seoul & Wiley-VCH GmbH.",

year = "2024",

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doi = "10.1002/bkcs.12828",

language = "English",

volume = "45",

pages = "317--321",

journal = "Bulletin of the Korean Chemical Society",

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TY - JOUR

T1 - Highly active cobalt(II) and copper(II) complexes supported by aminomethylquinoline mediating stereoselective ring-opening polymerization of rac-lactide

AU - Lee, Jaegyeong

AU - Nayab, Saira

AU - Kumar, Ameet

AU - Kim, Dongil

AU - Jung, Hyewon

AU - Lee, Sang Ho

AU - Cho, Daeheum

AU - Lee, Hyosun

PY - 2024/4

Y1 - 2024/4

N2 - 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]/LiOiPr and [LMCl2]/LiMe (M = Co, Cu) resulted in over 95% conversion within 10 min at 25 °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 (Pr = 0.92) with 98% conversion at 0 °C.

AB - 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]/LiOiPr and [LMCl2]/LiMe (M = Co, Cu) resulted in over 95% conversion within 10 min at 25 °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 (Pr = 0.92) with 98% conversion at 0 °C.

KW - aminomethylquinoline

KW - cobalt-complex

KW - copper-complex

KW - heterotactic PLA

KW - ring-opening polymerization

UR - http://www.scopus.com/inward/record.url?scp=85185695402&partnerID=8YFLogxK

U2 - 10.1002/bkcs.12828

DO - 10.1002/bkcs.12828

M3 - Article

AN - SCOPUS:85185695402

SN - 0253-2964

VL - 45

SP - 317

EP - 321

JO - Bulletin of the Korean Chemical Society

JF - Bulletin of the Korean Chemical Society

IS - 4

ER -

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

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Keywords

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