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Efficient synthesis of isosorbide-based polycarbonate with scalable dicationic ionic liquid catalysts by balancing the reactivity of the endo-OH and exo-OH

文献类型：期刊论文

作者Wang, Weiwei1,4; Zhang, Yaqin4; Yang, Zifeng1,4; Zhang, Zhencai1; Fang, Wenjuan4; Niu, Donghui4; He, Hongyan1,2,4; Xu, Fei1,2,3,4
刊名GREEN CHEMISTRY
出版日期2021-01-21
卷号23期号:2页码:973-982
ISSN号1463-9262
DOI10.1039/d0gc03798b
英文摘要In this study, a series of high-activity imidazole- based dicationic ionic liquids (DILs) were designed and prepared as efficient catalysts for balancing the reactivity between the endo-hydroxyl group (endo-OH) and the exo-hydroxyl group (exo-OH) of isosorbide (ISO) to synthesize high molecular weight poly(isosorbide carbonate) (PIC). Meanwhile, the thermal performance of PIC was precisely optimized by regulating the chain configuration. The results showed that when the trace amounts (4.5 x 10(-5) based on the ISO molar amount) of bis-(3-methyl-1-imidazole)-ethylene dibromide ([C-2(Min)(2)][Br](2)) were used, the weight average molecular weight (M-w) of PIC reached 98 700 g mol(-1). could be concluded from the results of the experiment and the stimulation that the high catalytic activity of DILs was attributed to the strong electrostatic interaction between the cation and the substrate and the effective balance of the reactivity of the endo-OH and the exo-OH. Furthermore, we found that the reduction of hydroxyl groups in the terminal groups and the increase of endo -endo (a(1)) structure in the repeating unit improved the thermal properties of PIC. Finally, H-1 NMR, Fourier infrared spectroscopy, and density functional theory (DFT) calculations were used to verify the reaction process through anion and cation multi-site synergistic effect and a possible electrophilic-nucleophilic reaction mechanism was successfully obtained.
资助项目National Natural Science Foundation of China[22078339] ; National Natural Science Foundation of China[21878316] ; National Science Fund for Excellent Young Scholars[21922813] ; Strategic Foundation of Chinese Academy of Sciences[CXJJ-19-B01] ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21031000]
WOS研究方向Chemistry ; Science & Technology - Other Topics
语种英语
WOS记录号WOS:000613508300034
出版者ROYAL SOC CHEMISTRY
资助机构National Natural Science Foundation of China ; National Science Fund for Excellent Young Scholars ; Strategic Foundation of Chinese Academy of Sciences ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/47794]  
专题中国科学院过程工程研究所
通讯作者Xu, Fei
作者单位1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
2.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Zhongke Langfang Inst Proc Engn, Langfang 065001, Peoples R China
4.Chinese Acad Sci, CAS Key Lab Green Proc & Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc,Inst Proc, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Weiwei,Zhang, Yaqin,Yang, Zifeng,et al. Efficient synthesis of isosorbide-based polycarbonate with scalable dicationic ionic liquid catalysts by balancing the reactivity of the endo-OH and exo-OH[J]. GREEN CHEMISTRY,2021,23(2):973-982.
APA Wang, Weiwei.,Zhang, Yaqin.,Yang, Zifeng.,Zhang, Zhencai.,Fang, Wenjuan.,...&Xu, Fei.(2021).Efficient synthesis of isosorbide-based polycarbonate with scalable dicationic ionic liquid catalysts by balancing the reactivity of the endo-OH and exo-OH.GREEN CHEMISTRY,23(2),973-982.
MLA Wang, Weiwei,et al."Efficient synthesis of isosorbide-based polycarbonate with scalable dicationic ionic liquid catalysts by balancing the reactivity of the endo-OH and exo-OH".GREEN CHEMISTRY 23.2(2021):973-982.

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来源：过程工程研究所

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