Lanthanide-Hypophosphite Frameworks with Guanidinium Guest Showing High Proton Conductivity
Lanthanide-Hypophosphite Frameworks with Guanidinium Guest Showing High Proton Conductivity
复制标题
含有胍客体的镧系元素-次磷酸盐框架表现出高质子传导率
DOI：
10.1002/cjoc.202100382
复制
发表时间：
2021
影响因子：
5.4
通讯作者：
Bu Xian-He
中科院分区：
文献类型：
--
作者：
Li Quan-Wen;Li Zhao-Yang;Li Kai;Xia Bin;Li Na;Bu Xian-He
质子导电金属有机框架（MOFs）由于其在膜燃料电池中的应用前景而受到人们的广泛关注。为了探索具有高性能的质子传导MOFs，在这里我们提出了四种具有不同胺客体的镧系元素-次磷酸盐框架。这些配合物具有通式[AH][Gd 2（H2 PO 2）7]（AH =质子化胺）。以胍为客体的配合物1由于具有丰富的氢键网络，在相对湿度为97%（368 K）时具有1.75 × 10-2S·cm-1的高质子电导率。我们还研究了配合物1的磁性，发现次磷酸根配体转移了Gd ~（3+）离子之间弱的反铁磁相互作用。
Main observation and conclusionProton‐conductive metal‐organic frameworks (MOFs) have attracted great attention for their promising application in membrane fuel cells. To explore proton‐conductive MOFs with high performance, here we present four lanthanide‐hypophosphite frameworks with distinct amine guests. These complexes possess a general formula [AH][Gd2(H2PO2)7] (AH = protonated amines). Due to the rich hydrogen bond networks, complex 1 with guanidinium as guest shows high proton conductivity of 1.75 × 10–2S·cm–1at a relative humidity of 97% (368 K). We also studied the magnetic properties of complex 1 and reveal that the hypophosphite ligand transfers weak antiferromagnetic interactions between Gd3+ions.