4.8 nm Concave {M72} (M=Co, Ni, Fe) metal-organic polyhedra capped by 18 calixarenes

• 作者: Haitao Han Liang Kan Ping Li Guoshuai Zhang Kaiyue Li Wuping Liao Yunling Liu Wei Chen Chunhua T.Hu
• 来源期刊: 中国科学：化学（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: ARTICLES
• 页码范围: 426-431
• 页数: 6页
• 语种: 英文

摘要

Three 4.8 nm isostructural {M72} (M=CoⅡ for CIAC-128,NiⅡ for CIAC-129,FeⅡ for CIAC-130) metal-organic polyhedra (MOPs) are constructed by eighteen M4-p-tert-butylthiacalix[4]arene (M4-TC4A) units bridged via sixteen four-connected 5,5'-(1H-1,2,4-triazole-3,5-diyl) diisophthalic acid (H4TADIPA) linkers.These MOPs are featured with a rarely reported concave coordination cage,which can be simplified as a squeezed double-decker hexagonal prism pressed from the top and bottom hexagonal faces.Furthermore,CIAC-128,CIAC-129 and CIAC-130 are the highest nuclearity discrete clusters of Co,Ni and Fe reported so far.CIAC-128 has higher separation selectivity of C3H8 than CH4 under ambient conditions,and also exhibits separation selectivity for C2H6/CH4,C2H2/CH4,and C2H4/CH4.In addition,CIAC-128 can provide the cavity for the confined synthesis of noble metal nanoclusters such as Pd nanoclusters and the resulting Pd@CIAC-128 hybrids show higher electrocatalytic activity than commercial Pt/C towards hydrogen evolution reaction (HER).