Trojan Horse Thiocyanate: Induction and Control of High Proton Conductivity in CPO-27/MOF-74 Metal-Organic Frameworks by Metal Selection and Solvent-Free Mechanochemical Dosing

被引：0

作者：

Lupa, Magdalena ^{[1
]}

Kozyra, Pawel ^{[1
]}

Jajko, Gabriela ^{[1
]}

Matoga, Dariusz ^{[1
]}

机构：

[1] Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Kraków,30-387, Poland

来源：

ACS Applied Materials and Interfaces | 2021年 / 13卷 / 25期

关键词：

Metal-Organic Frameworks;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Proton-conducting metal-organic frameworks (MOFs) have been gaining attention for their role as solid-state electrolytes in various devices for energy conversion and storage. Here, we present a convenient strategy for inducing and tuning of superprotonic conductivity in MOFs with open metal sites via postsynthetic incorporation of charge carriers enabled by solvent-free mechanochemistry and anion coordination. This scalable approach is demonstrated using a series of CPO-27/MOF-74 [M2(dobdc); M = Mg2+, Zn2+, Ni2+ dobdc = 2,5-dioxido-1,4-benzenedicarboxylate] materials loaded with various stoichiometric amounts of NH4SCN. The modified materials are not achievable by conventional immersion in solutions. Periodic density functional theory (DFT) calculations, supported by infrared (IR) spectroscopy and powder X-ray diffraction, provide structures of the modified MOFs including positions of inserted ions inside the [001] channels. Despite the same type and concentration of proton carriers, the MOFs can be arranged in the increasing order of conductivity (Ni © 2021 The Authors. Published by American Chemical Society.

引用

页码：29820 / 29826