一步法合成含官能团的环氧/环碳酸酯双官能团聚碳酸酯

Jie Huang, Boxiong Shen
{"title":"一步法合成含官能团的环氧/环碳酸酯双官能团聚碳酸酯","authors":"Jie Huang,&nbsp;Boxiong Shen","doi":"10.1016/j.ccst.2025.100400","DOIUrl":null,"url":null,"abstract":"<div><div>The synthesis of functionalized polycarbonates from CO<sub>2</sub> has gained significant attention due to their versatile properties and potential in high-performance applications. A novel trinuclear tetradentate Schiff base chromium complex <strong>1</strong> was designed and synthesized, and combined with bis(triphenylphosphine) imidazolium salt (PPNN<sub>3</sub>) to form a binary catalytic system (complex <strong>1</strong>/PPNN<sub>3</sub>). This system was employed to catalyze the copolymerization of CO<sub>2</sub> with bicyclic epoxide compounds containing both terminal and internal epoxy groups (VCHDEP). Experimental results demonstrate that a bifunctional polycarbonate (PVCH) was efficiently synthesized through a simple one-step process, featuring a polycarbonate cyclohexene ester backbone with side chains containing both epoxy (EP) and cyclic carbonate (CC) groups. The EP/CC ratio can be precisely tuned by varying the reaction temperature and the molar ratio of PPNN<sub>3</sub>, enabling control over polymer properties. Notably, the glass transition temperature (Tg) of PVCH was found to be 164.5 °C, significantly higher than that of conventional polycarbonates synthesized from bisphenol A (154 °C), indicating superior thermal stability and mechanical robustness. The complex <strong>1</strong>/PPNN<sub>3</sub> catalytic system selectively catalyzed the ring-opening copolymerization of epoxides to form the polymer backbone, while retaining unreacted epoxy groups in the side chains. In this catalytic system, the enthalpy change (ΔHₚ<sup>θ</sup>) for the VCHDEP ring-opening polymerization is -20.5 kJ mol<sup>-1</sup>, the entropy change (ΔSₚ<sup>θ</sup>) is -80.3 J mol<sup>-1</sup> K<sup>-1</sup>, the Gibbs free energy change (ΔGₚ<sup>θ</sup>) is 3.5 kJ mol<sup>-1</sup>, and the activation energy (Ea) for PVCH synthesis is 56.8 kJ/mol. Furthermore, hydrolysis and amination reactions were performed on the cyclic carbonate and epoxy groups in PVCH, yielding polycarbonates with hydroxyl, amide, and other functional groups, which further enhance the material's versatility for applications requiring strong adhesion, biocompatibility, and chemical reactivity. This work not only demonstrates a highly efficient and selective catalytic system but also provides a strategy for expanding the application potential of CO<sub>2</sub>-based polycarbonates in advanced materials.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100400"},"PeriodicalIF":0.0000,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"One-step synthesis of epoxy/cyclic carbonate bifunctional polycarbonates with functional groups\",\"authors\":\"Jie Huang,&nbsp;Boxiong Shen\",\"doi\":\"10.1016/j.ccst.2025.100400\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The synthesis of functionalized polycarbonates from CO<sub>2</sub> has gained significant attention due to their versatile properties and potential in high-performance applications. A novel trinuclear tetradentate Schiff base chromium complex <strong>1</strong> was designed and synthesized, and combined with bis(triphenylphosphine) imidazolium salt (PPNN<sub>3</sub>) to form a binary catalytic system (complex <strong>1</strong>/PPNN<sub>3</sub>). This system was employed to catalyze the copolymerization of CO<sub>2</sub> with bicyclic epoxide compounds containing both terminal and internal epoxy groups (VCHDEP). Experimental results demonstrate that a bifunctional polycarbonate (PVCH) was efficiently synthesized through a simple one-step process, featuring a polycarbonate cyclohexene ester backbone with side chains containing both epoxy (EP) and cyclic carbonate (CC) groups. The EP/CC ratio can be precisely tuned by varying the reaction temperature and the molar ratio of PPNN<sub>3</sub>, enabling control over polymer properties. Notably, the glass transition temperature (Tg) of PVCH was found to be 164.5 °C, significantly higher than that of conventional polycarbonates synthesized from bisphenol A (154 °C), indicating superior thermal stability and mechanical robustness. The complex <strong>1</strong>/PPNN<sub>3</sub> catalytic system selectively catalyzed the ring-opening copolymerization of epoxides to form the polymer backbone, while retaining unreacted epoxy groups in the side chains. In this catalytic system, the enthalpy change (ΔHₚ<sup>θ</sup>) for the VCHDEP ring-opening polymerization is -20.5 kJ mol<sup>-1</sup>, the entropy change (ΔSₚ<sup>θ</sup>) is -80.3 J mol<sup>-1</sup> K<sup>-1</sup>, the Gibbs free energy change (ΔGₚ<sup>θ</sup>) is 3.5 kJ mol<sup>-1</sup>, and the activation energy (Ea) for PVCH synthesis is 56.8 kJ/mol. Furthermore, hydrolysis and amination reactions were performed on the cyclic carbonate and epoxy groups in PVCH, yielding polycarbonates with hydroxyl, amide, and other functional groups, which further enhance the material's versatility for applications requiring strong adhesion, biocompatibility, and chemical reactivity. This work not only demonstrates a highly efficient and selective catalytic system but also provides a strategy for expanding the application potential of CO<sub>2</sub>-based polycarbonates in advanced materials.</div></div>\",\"PeriodicalId\":9387,\"journal\":{\"name\":\"Carbon Capture Science & Technology\",\"volume\":\"15 \",\"pages\":\"Article 100400\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-03-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Carbon Capture Science & Technology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2772656825000405\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Carbon Capture Science & Technology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2772656825000405","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

摘要

以CO2为原料合成功能化聚碳酸酯因其多用途和高性能应用潜力而受到广泛关注。设计并合成了一种新型的三核四齿Schiff碱铬配合物1,并与双(三苯基膦)咪唑盐(PPNN3)结合形成二元催化体系(配合物1/PPNN3)。该体系用于催化CO2与端环氧和内环氧双环环氧化合物(VCHDEP)的共聚反应。实验结果表明,以聚碳酸酯环己烯酯为主链,侧链同时含有环氧基(EP)和环碳酸酯(CC),通过简单的一步法合成了双功能聚碳酸酯(PVCH)。通过改变反应温度和PPNN3的摩尔比,可以精确地调整EP/CC比,从而控制聚合物的性能。值得注意的是,PVCH的玻璃化转变温度(Tg)为164.5°C,显著高于由双酚A合成的传统聚碳酸酯(154°C),表明其具有优异的热稳定性和机械稳健性。配合物1/PPNN3催化体系选择性地催化环氧化合物开环共聚形成聚合物骨架,同时在侧链上保留未反应的环氧基。在该催化体系中,VCHDEP开环聚合的焓变(ΔHₚθ)为-20.5 kJ mol-1,熵变(ΔSₚθ)为-80.3 J mol-1 K-1,吉布斯自由能变化(ΔGₚθ)为3.5 kJ mol-1, PVCH合成的活化能(Ea)为56.8 kJ/mol。此外,PVCH中的环碳酸盐和环氧基进行了水解和胺化反应,得到了含有羟基、酰胺和其他官能团的聚碳酸酯,这进一步增强了材料的多功能性,适用于需要强附着力、生物相容性和化学反应性的应用。这项工作不仅展示了一个高效和选择性的催化体系,而且为扩大co2基聚碳酸酯在先进材料中的应用潜力提供了一个策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

One-step synthesis of epoxy/cyclic carbonate bifunctional polycarbonates with functional groups

One-step synthesis of epoxy/cyclic carbonate bifunctional polycarbonates with functional groups
The synthesis of functionalized polycarbonates from CO2 has gained significant attention due to their versatile properties and potential in high-performance applications. A novel trinuclear tetradentate Schiff base chromium complex 1 was designed and synthesized, and combined with bis(triphenylphosphine) imidazolium salt (PPNN3) to form a binary catalytic system (complex 1/PPNN3). This system was employed to catalyze the copolymerization of CO2 with bicyclic epoxide compounds containing both terminal and internal epoxy groups (VCHDEP). Experimental results demonstrate that a bifunctional polycarbonate (PVCH) was efficiently synthesized through a simple one-step process, featuring a polycarbonate cyclohexene ester backbone with side chains containing both epoxy (EP) and cyclic carbonate (CC) groups. The EP/CC ratio can be precisely tuned by varying the reaction temperature and the molar ratio of PPNN3, enabling control over polymer properties. Notably, the glass transition temperature (Tg) of PVCH was found to be 164.5 °C, significantly higher than that of conventional polycarbonates synthesized from bisphenol A (154 °C), indicating superior thermal stability and mechanical robustness. The complex 1/PPNN3 catalytic system selectively catalyzed the ring-opening copolymerization of epoxides to form the polymer backbone, while retaining unreacted epoxy groups in the side chains. In this catalytic system, the enthalpy change (ΔHₚθ) for the VCHDEP ring-opening polymerization is -20.5 kJ mol-1, the entropy change (ΔSₚθ) is -80.3 J mol-1 K-1, the Gibbs free energy change (ΔGₚθ) is 3.5 kJ mol-1, and the activation energy (Ea) for PVCH synthesis is 56.8 kJ/mol. Furthermore, hydrolysis and amination reactions were performed on the cyclic carbonate and epoxy groups in PVCH, yielding polycarbonates with hydroxyl, amide, and other functional groups, which further enhance the material's versatility for applications requiring strong adhesion, biocompatibility, and chemical reactivity. This work not only demonstrates a highly efficient and selective catalytic system but also provides a strategy for expanding the application potential of CO2-based polycarbonates in advanced materials.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信