Use of pyrazoles as ligands greatly enhances the catalytic activity of titanium iso-propoxide for the ring-opening polymerization of l-lactide: A cooperation effect

Tzu Fang Wang; Someswara Rao Kosuru; Shu Chun Yu; Yung Chi Chang; Hsin Yu Lai; Yu Lun Chang; Kuo Hui Wu; Shangwu Ding; Hsuan Ying Chen

doi:10.1039/d0ra07824g

Use of pyrazoles as ligands greatly enhances the catalytic activity of titanium iso-propoxide for the ring-opening polymerization of l-lactide: A cooperation effect

Tzu Fang Wang, Someswara Rao Kosuru, Shu Chun Yu, Yung Chi Chang, Hsin Yu Lai, Yu Lun Chang, Kuo Hui Wu, Shangwu Ding, Hsuan Ying Chen

化學學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

3 引文斯高帕斯（Scopus）

摘要

Using TiOiPr4 with a pyrazole ligand for one-pot LA polymerization improved catalytic activity compared with using TiOiPr4 only. At 60 °C, TiOiPr4 with furPz exhibited a higher catalytic activity (approximately 3-fold) than TiOiPr4. At room temperature, TiOiPr4 with BuPz exhibited a higher catalytic activity (approximately 17-fold) than TiOiPr4. High molecular mass PLA (MnGPC = 51 100, and Đ = 1.10) could be produced by using TiOiPr4 with furPz in melt polymerization ([TiOiPr4] : [furPz] = 1000 : 1 : 1 at 100 °C, 240 min). The crystal structure of MePz2Ti2OiPr7 revealed the cooperative activation between two Ti atoms during LA polymerization. This journal is

原文	???core.languages.en_GB???
頁（從 - 到）	40690-40696
頁數	7
期刊	RSC Advances
卷	10
發行號	67
DOIs	https://doi.org/10.1039/d0ra07824g
出版狀態	已出版 - 9 11月 2020

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10.1039/d0ra07824g

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Wang, Tzu Fang ; Kosuru, Someswara Rao ; Yu, Shu Chun ; Chang, Yung Chi ; Lai, Hsin Yu ; Chang, Yu Lun ; Wu, Kuo Hui ; Ding, Shangwu ; Chen, Hsuan Ying. / Use of pyrazoles as ligands greatly enhances the catalytic activity of titanium iso-propoxide for the ring-opening polymerization of l-lactide : A cooperation effect. 於: RSC Advances. 2020 ; 卷 10, 編號 67. 頁 40690-40696.

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title = "Use of pyrazoles as ligands greatly enhances the catalytic activity of titanium iso-propoxide for the ring-opening polymerization of l-lactide: A cooperation effect",

abstract = "Using TiOiPr4 with a pyrazole ligand for one-pot LA polymerization improved catalytic activity compared with using TiOiPr4 only. At 60 °C, TiOiPr4 with furPz exhibited a higher catalytic activity (approximately 3-fold) than TiOiPr4. At room temperature, TiOiPr4 with BuPz exhibited a higher catalytic activity (approximately 17-fold) than TiOiPr4. High molecular mass PLA (MnGPC = 51 100, and {\D} = 1.10) could be produced by using TiOiPr4 with furPz in melt polymerization ([TiOiPr4] : [furPz] = 1000 : 1 : 1 at 100 °C, 240 min). The crystal structure of MePz2Ti2OiPr7 revealed the cooperative activation between two Ti atoms during LA polymerization. This journal is ",

author = "Wang, {Tzu Fang} and Kosuru, {Someswara Rao} and Yu, {Shu Chun} and Chang, {Yung Chi} and Lai, {Hsin Yu} and Chang, {Yu Lun} and Wu, {Kuo Hui} and Shangwu Ding and Chen, {Hsuan Ying}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

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month = nov,

day = "9",

doi = "10.1039/d0ra07824g",

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volume = "10",

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Use of pyrazoles as ligands greatly enhances the catalytic activity of titanium iso-propoxide for the ring-opening polymerization of l-lactide : A cooperation effect. / Wang, Tzu Fang; Kosuru, Someswara Rao; Yu, Shu Chun; Chang, Yung Chi; Lai, Hsin Yu; Chang, Yu Lun; Wu, Kuo Hui; Ding, Shangwu; Chen, Hsuan Ying.

於: RSC Advances, 卷 10, 編號 67, 09.11.2020, p. 40690-40696.

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

TY - JOUR

T1 - Use of pyrazoles as ligands greatly enhances the catalytic activity of titanium iso-propoxide for the ring-opening polymerization of l-lactide

T2 - A cooperation effect

AU - Wang, Tzu Fang

AU - Kosuru, Someswara Rao

AU - Yu, Shu Chun

AU - Chang, Yung Chi

AU - Lai, Hsin Yu

AU - Chang, Yu Lun

AU - Wu, Kuo Hui

AU - Ding, Shangwu

AU - Chen, Hsuan Ying

PY - 2020/11/9

Y1 - 2020/11/9

N2 - Using TiOiPr4 with a pyrazole ligand for one-pot LA polymerization improved catalytic activity compared with using TiOiPr4 only. At 60 °C, TiOiPr4 with furPz exhibited a higher catalytic activity (approximately 3-fold) than TiOiPr4. At room temperature, TiOiPr4 with BuPz exhibited a higher catalytic activity (approximately 17-fold) than TiOiPr4. High molecular mass PLA (MnGPC = 51 100, and Đ = 1.10) could be produced by using TiOiPr4 with furPz in melt polymerization ([TiOiPr4] : [furPz] = 1000 : 1 : 1 at 100 °C, 240 min). The crystal structure of MePz2Ti2OiPr7 revealed the cooperative activation between two Ti atoms during LA polymerization. This journal is

AB - Using TiOiPr4 with a pyrazole ligand for one-pot LA polymerization improved catalytic activity compared with using TiOiPr4 only. At 60 °C, TiOiPr4 with furPz exhibited a higher catalytic activity (approximately 3-fold) than TiOiPr4. At room temperature, TiOiPr4 with BuPz exhibited a higher catalytic activity (approximately 17-fold) than TiOiPr4. High molecular mass PLA (MnGPC = 51 100, and Đ = 1.10) could be produced by using TiOiPr4 with furPz in melt polymerization ([TiOiPr4] : [furPz] = 1000 : 1 : 1 at 100 °C, 240 min). The crystal structure of MePz2Ti2OiPr7 revealed the cooperative activation between two Ti atoms during LA polymerization. This journal is

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VL - 10

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ER -

Use of pyrazoles as ligands greatly enhances the catalytic activity of titanium iso-propoxide for the ring-opening polymerization of l-lactide: A cooperation effect

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