Synthesis of bioderived polycarbonates with adjustable molecular weights catalyzed by phenolic-derived ionic liquids
Synthesis of bioderived polycarbonates with adjustable molecular weights catalyzed by phenolic-derived ionic liquids
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酚类离子液体催化合成分子量可调的生物源聚碳酸酯
DOI：
10.1039/d0gc00493f
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发表时间：
2020-04
期刊：
影响因子：
9.8
通讯作者：
Suojiang Zhang
中科院分区：
文献类型：
--
作者：
Wei Qian;Lei Liu;Zengliang Zhang;Qian Su;Weizhen Zhao;Weiguo Cheng;Li Dong;Zifeng Yang;Ruibin Bai;Fei Xu;Yanqiang Zhang;Suojiang Zhang
通过绿色途径和分子量调控合成高分子量生物聚碳酸酯具有重要的意义和挑战性。本文采用离子液体（ILs）作为环保催化剂，以异山梨酯和碳酸二甲酯（DMC）为原料，开发了一种绿色顺序合成分子量可调生物源聚碳酸酯的方法。IL催化剂的结构可以很容易地控制异山梨酯衍生聚碳酸酯（PIC）的分子量，这是IL催化剂取代传统含金属催化剂的一个有吸引力的优势。在[Bmim][4-I-Phen]催化剂的存在下，PIC的重量-平均分子量（Mw）可达50 300 g mol−1。结合实验结果和DFT计算，提出了一种IL阴离子-阳离子协同催化聚合机理，揭示了亲核-亲电双键激活和电荷-电荷相互作用在催化PIC形成中的作用。本研究的意义在于为开发合成高分子量聚碳酸酯的IL催化剂提供了指导，从而方便地制备出各种性能可调的聚合物。
The synthesis of high-molecular-weight bioderived polycarbonates via green routes and regulation of molecular weight is of great significance and is highly challenging. Herein, a green sequential approach toward the synthesis of bio-derived polycarbonates with adjustable molecular weights from isosorbide and dimethyl carbonate (DMC) has been developed by employing ionic liquids (ILs) as a class of eco-friendly catalysts. The structures of IL catalysts can be designed readily to control the molecular weight of isosorbide-derived polycarbonates (PIC), which is an attractive advantage of IL catalysts instead of the conventional metal-containing catalysts. In the presence of the [Bmim][4-I-Phen] catalyst, the PIC weight-average molecular weight (Mw) can reach 50 300 g mol−1. By the combination of the experimental results and DFT calculations, an IL anion–cation synergistic catalytic polymerization mechanism has been proposed, which reveals the nucleophile–electrophile dual activation by H-bonds and charge–charge interactions in catalyzing the formation of PIC. The significance of this study is that it provides guidance for developing IL catalysts for synthesizing higher molecular weight polycarbonates, thereby conveniently leading to a variety of polymers with tunable properties.
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影响因子：
15
作者：
Chakraborti, Asit K.;Roy, Sudipta Raha
通讯作者：
Roy, Sudipta Raha
DOI：
10.1002/chin.200249227
发表时间：
2002-12
期刊：
ChemInform
影响因子：
--
作者：
P. Tundo;M. Selva
通讯作者：
P. Tundo;M. Selva
影响因子：
--
作者：
F. Aricò;P. Tundo
通讯作者：
F. Aricò;P. Tundo
DOI：
10.1021/jo049636p
发表时间：
2004-08
期刊：
The Journal of organic chemistry
影响因子：
--
作者：
N. Lancaster;T. Welton
通讯作者：
N. Lancaster;T. Welton
影响因子：
10.4
作者：
Alonso-Magdalena P;Vieira E;Soriano S;Menes L;Burks D;Quesada I;Nadal A
通讯作者：
Nadal A