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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
Wang, Weiwei1,2; Zhang, Yaqin1; Yang, Zifeng1,2; Zhang, Zhencai2; Fang, Wenjuan1; Niu, Donghui1; He, Hongyan1,2,3; Xu, Fei1,2,3,4
2021-01-21
Source PublicationGREEN CHEMISTRY
ISSN1463-9262
Volume23Issue:2Pages:973-982
AbstractIn 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.
DOI10.1039/d0gc03798b
Language英语
Funding ProjectNational 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 Research AreaChemistry ; Science & Technology - Other Topics
WOS SubjectChemistry, Multidisciplinary ; Green & Sustainable Science & Technology
Funding OrganizationNational 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
WOS IDWOS:000613508300034
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/47795
Collection中国科学院过程工程研究所
Corresponding AuthorXu, Fei
Affiliation1.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
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
4.Zhongke Langfang Inst Proc Engn, Langfang 065001, Peoples R China
Recommended Citation
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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