{"title":"Building Stable Pillar-Layered Metal–Organic Frameworks: Introduction of Unsaturated Bonds for Enhanced Efficiency in C2H2/CO2 Separation","authors":"Wenke Yuan, Panyue Guo, Weize Wang, Peipei Cen, Xiu-Yuan Li, Bo Liu, Huifang Zhou","doi":"10.1021/acsmaterialslett.4c01150","DOIUrl":null,"url":null,"abstract":"Pillar-layered structures represent a significant category within MOFs; however, the exploration of their chemical stability and systematic functionalization has been largely neglected. Herein, we fabricated a pillar-layered MOF (<b>Zn-L</b><sub><b>C–C</b></sub>) with fsc topology, utilizing a tetradentate carboxylic ligand with bipyridine and Zn(II) ions via the pillar-layered approach. Notably, this topological structure displays markedly superior stability compared with typical pillar-layered MOFs with pcu topology. In addition, by introducing unsaturated bonds to modify and increase the length of the pillars, three additional pillar-layered MOFs (<b>Zn-L</b><sub><b>N=N</b></sub>, <b>Zn-L</b><sub><b>C=C</b></sub>, and <b>Zn-L</b><sub><b>C≡C</b></sub>) were obtained. Compared with those of <b>Zn-L</b><sub><b>C–C</b></sub>, the adsorption capacities for C<sub>2</sub>H<sub>2</sub> of the other three structures have been improved. Strikingly, the dynamic adsorption uptake of <b>Zn-L</b><sub><b>N=N</b></sub> for C<sub>2</sub>H<sub>2</sub> is as high as 53.7 cm<sup>3</sup> g<sup>–1</sup>, and the dynamic separation ratio of C<sub>2</sub>H<sub>2</sub>/CO<sub>2</sub> is 3.2. These results demonstrate that the introduction of diazo groups in the pillar can enhance the adsorption capacities of pillar-layered MOFs to C<sub>2</sub>H<sub>2</sub>.","PeriodicalId":19,"journal":{"name":"ACS Materials Letters","volume":null,"pages":null},"PeriodicalIF":9.6000,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Materials Letters","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acsmaterialslett.4c01150","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Pillar-layered structures represent a significant category within MOFs; however, the exploration of their chemical stability and systematic functionalization has been largely neglected. Herein, we fabricated a pillar-layered MOF (Zn-LC–C) with fsc topology, utilizing a tetradentate carboxylic ligand with bipyridine and Zn(II) ions via the pillar-layered approach. Notably, this topological structure displays markedly superior stability compared with typical pillar-layered MOFs with pcu topology. In addition, by introducing unsaturated bonds to modify and increase the length of the pillars, three additional pillar-layered MOFs (Zn-LN=N, Zn-LC=C, and Zn-LC≡C) were obtained. Compared with those of Zn-LC–C, the adsorption capacities for C2H2 of the other three structures have been improved. Strikingly, the dynamic adsorption uptake of Zn-LN=N for C2H2 is as high as 53.7 cm3 g–1, and the dynamic separation ratio of C2H2/CO2 is 3.2. These results demonstrate that the introduction of diazo groups in the pillar can enhance the adsorption capacities of pillar-layered MOFs to C2H2.
期刊介绍:
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.