由聚环氧乙烷-聚苯乙烯二嵌段共聚物模板化制备的具有可调孔径的分级大孔金属有机框架材料。

Hierarchical large-pore MOFs templated from poly(ethylene oxide)--polystyrene diblock copolymer with tuneable pore sizes.

作者信息

Chen Jingwen, Li Ke, Yang Jian, Gu Jinlou

机构信息

Key Lab for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.

出版信息

Chem Commun (Camb). 2022 Sep 8;58(72):10028-10031. doi: 10.1039/d2cc01914k.

DOI:10.1039/d2cc01914k

PMID:35983798

Abstract

Diblock copolymer poly(ethylene oxide)--poly(styrene) (PEO--PS) was adopted to template the synthesis of hierarchically porous Ce-based metal-organic frameworks (MOFs) for the first time. By extending the synergistic effect of Hofmeister ions and soft templates into the water-rich system, UiO-66 type Ce-MOFs with a mesopore size of about 15 nm were achieved. Mesopore size could be further tuned up to approximately 23 nm upon introducing 1,3,5-trimethylbenzene to the micelle core of PEO--PS.

摘要

首次采用双嵌段共聚物聚环氧乙烷-聚苯乙烯（PEO-PS）作为模板来合成具有分级孔结构的铈基金属有机框架材料（MOFs）。通过将霍夫迈斯特离子和软模板的协同效应扩展到富水体系中，制备出了介孔尺寸约为15 nm的UiO-66型铈基金属有机框架材料。在PEO-PS的胶束核中引入1,3,5-三甲基苯后，介孔尺寸可进一步调节至约23 nm。