富羧酸基团的共轭微孔聚合物:结构单元对孔隙和气体吸附性能的影响

引用本文: 姚婵, 李国艳, 许彦红. 富羧酸基团的共轭微孔聚合物:结构单元对孔隙和气体吸附性能的影响[J]. 物理化学学报, 2017, 33(9): 1898-1904. doi: 10.3866/PKU.WHXB201705112 shu

Citation: YAO Chan, LI Guo-Yan, XU Yan-Hong. Carboxyl-Enriched Conjugated Microporous Polymers: Impact of Building Blocks on Porosity and Gas Adsorption[J]. Acta Physico-Chimica Sinica, 2017, 33(9): 1898-1904. doi: 10.3866/PKU.WHXB201705112 shu

富羧酸基团的共轭微孔聚合物:结构单元对孔隙和气体吸附性能的影响

1.
吉林师范大学, 环境友好材料制备和应用教育部重点实验室, 长春 130103;
2.
吉林师范大学, 功能材料物理与化学教育部重点实验室, 吉林四平 136000
基金项目:
国家自然科学基金（21501065），吉林省科技发展计划（20160101319JC），吉林省教育厅科学技术研究项目（No. 2015229），四平市科技发展计划项目（No. 2015057）资助项目

摘要: 共轭微孔聚合物（CMPs）骨架中的孔和极性基团对聚合物的气体吸附性能起着重要作用。阐明聚合物中极性基团的效果对该领域的进一步发展是必不可少的。为了解决这个根本问题，我们使用最简单的芳香系统-苯作为建筑单体，构筑了两个新颖的富羧酸基团的CMPs （CMP-COOH@1，CMP-COOH@2），并探讨了CMPs中游离羧酸基团的量对其孔隙、吸附焓、气体吸附和选择性的深远影响。CMP-COOH@1和CMP-COOH@2显示的BET比表面积分别为835和765 m²·g^-1。这两种聚合物在二氧化碳存储方面显示了高潜力。在273 K和1.05 × 10⁵ Pa条件下，CMP-COOH@1和CMP-COOH@2的CO₂吸附值分别为2.17和2.63 mmol·g^-1。我们的研究结果表明，在相同的条件下增加聚合物中羧基基团的含量可以提高材料对气体的吸附容量和选择性。

关键词:

English

Carboxyl-Enriched Conjugated Microporous Polymers: Impact of Building Blocks on Porosity and Gas Adsorption

1.
Key Laboratory of Preparation and Applications of Environmental Friendly Materials of Ministry of Education, Jilin Normal University, Changchun 130103, P. R. China;
2.
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, Jilin Province, P. R. China
Received Date: 06 April 2017
Revised Date: 03 May 2017
Available Online: 11 May 2017
Fund Project:
The project was supported by the National Natural Science Foundation of China (21501065), Science and Technology Program of Jilin Province, China (20160101319JC), Science and Technology Research Program of the Education Department of Jilin Province (No. 2015229), and Science and Technology Program of Siping City (No. 2015057).

Abstract: Polar groups in the skeletons of conjugated microporous polymers (CMPs) play an important role in determining their porosity and gas sorption performance. Understanding the effect of the polar group on the properties of CMPs is essential for further advances in this field. To address this fundamental issue, we used benzene, the simplest aromatic system, as a monomer for the construction of two novel CMPs with multi-carboxylic acid groups in their skeletons (CMP-COOH@1 and CMP-COOH@2). We then explored the profound effect the amount of free carboxylic acid in each polymer had on their porosity, isosteric heat, gas adsorption, and gas selectivity. CMP-COOH@1 and CMP-COOH@2 showed Brunauer-Emmett-Teller (BET) surface areas of 835 and 765 m²·g^-¹, respectively, displaying high potential for carbon dioxide storage applications. CMP-COOH@1 and CMP-COOH@2 exhibited CO₂ capture capabilities of 2.17 and 2.63 mmol·g^-¹ (at 273 K and 1.05 × 10⁵ Pa), respectively, which were higher than those of their counterpart polymers, CMP-1 and CMP-2, which showed CO₂ capture capabilities of 1.66 and 2.28 mmol·g^-¹, respectively. Our results revealed that increasing the number of carboxylic acid groups in polymers could improve their adsorption capacity and selectivity.

Key words:

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

富羧酸基团的共轭微孔聚合物:结构单元对孔隙和气体吸附性能的影响

English

Carboxyl-Enriched Conjugated Microporous Polymers: Impact of Building Blocks on Porosity and Gas Adsorption

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

富羧酸基团的共轭微孔聚合物:结构单元对孔隙和气体吸附性能的影响

English

Carboxyl-Enriched Conjugated Microporous Polymers: Impact of Building Blocks on Porosity and Gas Adsorption

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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