Novel aluminum complexes bearing 2-(aminomethylene)malonate ligands with high efficiency and controllability in ring-opening polymerization of ε-caprolactone

Chi Chi Chang; Yung Chi Chang; Wei Yi Lu; Yi Chun Lai; Kuo Hui Wu; Ya Fan Lin; Hsuan Ying Chen

doi:10.1016/j.eurpolymj.2019.03.055

Novel aluminum complexes bearing 2-(aminomethylene)malonate ligands with high efficiency and controllability in ring-opening polymerization of ε-caprolactone

Chi Chi Chang, Yung Chi Chang, Wei Yi Lu, Yi Chun Lai, Kuo Hui Wu, Ya Fan Lin, Hsuan Ying Chen

Department of Chemistry

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

7 Scopus citations

Abstract

A series of Al complexes bearing diethyl 2-((arylamino)methylene)malonate and diethyl 2-((alkylamino)methylene)malonate ligands (AMM ligands) were synthesized and their application in the ring-opening polymerization of ε-caprolactone was studied. All the Al complexes bearing AMM ligands exhibited higher catalytic activity (approximately 2.8–16.5 fold) than those Al complexes bearing ketiminate ligands did, except O ^iPr AlMe ₂ (2 fold lower catalytic activity). In addition, Al complexes with steric hindrance or electron-withdrawing groups in the ligands revealed the greater catalytic activity, and the chelating effect reduced the reactivity of ring-opening polymerization.

Original language	English
Pages (from-to)	399-408
Number of pages	10
Journal	European Polymer Journal
Volume	115
DOIs	https://doi.org/10.1016/j.eurpolymj.2019.03.055
State	Published - Jun 2019

Keywords

Aluminum complex
Ring-opening polymerization
ε-caprolactone

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10.1016/j.eurpolymj.2019.03.055

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title = "Novel aluminum complexes bearing 2-(aminomethylene)malonate ligands with high efficiency and controllability in ring-opening polymerization of ε-caprolactone",

abstract = " A series of Al complexes bearing diethyl 2-((arylamino)methylene)malonate and diethyl 2-((alkylamino)methylene)malonate ligands (AMM ligands) were synthesized and their application in the ring-opening polymerization of ε-caprolactone was studied. All the Al complexes bearing AMM ligands exhibited higher catalytic activity (approximately 2.8–16.5 fold) than those Al complexes bearing ketiminate ligands did, except O iPr AlMe 2 (2 fold lower catalytic activity). In addition, Al complexes with steric hindrance or electron-withdrawing groups in the ligands revealed the greater catalytic activity, and the chelating effect reduced the reactivity of ring-opening polymerization. ",

keywords = "Aluminum complex, Ring-opening polymerization, ε-caprolactone",

author = "Chang, {Chi Chi} and Chang, {Yung Chi} and Lu, {Wei Yi} and Lai, {Yi Chun} and Wu, {Kuo Hui} and Lin, {Ya Fan} and Chen, {Hsuan Ying}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

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doi = "10.1016/j.eurpolymj.2019.03.055",

language = "???core.languages.en_GB???",

volume = "115",

pages = "399--408",

journal = "European Polymer Journal",

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Novel aluminum complexes bearing 2-(aminomethylene)malonate ligands with high efficiency and controllability in ring-opening polymerization of ε-caprolactone. / Chang, Chi Chi; Chang, Yung Chi; Lu, Wei Yi; Lai, Yi Chun; Wu, Kuo Hui; Lin, Ya Fan; Chen, Hsuan Ying.

In: European Polymer Journal, Vol. 115, 06.2019, p. 399-408.

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

TY - JOUR

T1 - Novel aluminum complexes bearing 2-(aminomethylene)malonate ligands with high efficiency and controllability in ring-opening polymerization of ε-caprolactone

AU - Chang, Chi Chi

AU - Chang, Yung Chi

AU - Lu, Wei Yi

AU - Lai, Yi Chun

AU - Wu, Kuo Hui

AU - Lin, Ya Fan

AU - Chen, Hsuan Ying

PY - 2019/6

Y1 - 2019/6

N2 - A series of Al complexes bearing diethyl 2-((arylamino)methylene)malonate and diethyl 2-((alkylamino)methylene)malonate ligands (AMM ligands) were synthesized and their application in the ring-opening polymerization of ε-caprolactone was studied. All the Al complexes bearing AMM ligands exhibited higher catalytic activity (approximately 2.8–16.5 fold) than those Al complexes bearing ketiminate ligands did, except O iPr AlMe 2 (2 fold lower catalytic activity). In addition, Al complexes with steric hindrance or electron-withdrawing groups in the ligands revealed the greater catalytic activity, and the chelating effect reduced the reactivity of ring-opening polymerization.

AB - A series of Al complexes bearing diethyl 2-((arylamino)methylene)malonate and diethyl 2-((alkylamino)methylene)malonate ligands (AMM ligands) were synthesized and their application in the ring-opening polymerization of ε-caprolactone was studied. All the Al complexes bearing AMM ligands exhibited higher catalytic activity (approximately 2.8–16.5 fold) than those Al complexes bearing ketiminate ligands did, except O iPr AlMe 2 (2 fold lower catalytic activity). In addition, Al complexes with steric hindrance or electron-withdrawing groups in the ligands revealed the greater catalytic activity, and the chelating effect reduced the reactivity of ring-opening polymerization.

KW - Aluminum complex

KW - Ring-opening polymerization

KW - ε-caprolactone

UR - http://www.scopus.com/inward/record.url?scp=85063728470&partnerID=8YFLogxK

U2 - 10.1016/j.eurpolymj.2019.03.055

DO - 10.1016/j.eurpolymj.2019.03.055

M3 - 期刊論文

AN - SCOPUS:85063728470

VL - 115

SP - 399

EP - 408

JO - European Polymer Journal

JF - European Polymer Journal

SN - 0014-3057

ER -

Novel aluminum complexes bearing 2-(aminomethylene)malonate ligands with high efficiency and controllability in ring-opening polymerization of ε-caprolactone

Abstract

Keywords

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