Dense Alkyne Arrays of a Zr(IV) Metal-Organic Framework Absorb Co2(CO)8 for Functionalization

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Jieying Hu
  • Feixiang Ma
  • Xiangzi Hu
  • Jun He
  • Zhengtao Xu

Detail(s)

Original languageEnglish
Pages (from-to)5626-5631
Journal / PublicationInorganic Chemistry
Volume59
Issue number8
Online published1 Apr 2020
Publication statusPublished - 20 Apr 2020

Abstract

Finely dispersed Co(0) and CoO species were efficiently loaded into a stable metal–organic framework to impart catalytic activities to the porous solid. The metalation of the MOF host is facilitated by the dense arrays of accessible alkyne units that boost the alkyne-Co2(CO)8 interaction. The tetrakis(4-carboxylphenylethynyl)pyrene linker, with eight symmetrically backfolded alkyne side arms, features strong fluorescence and a dendritic Sierpinski shape. The resultant Zr(IV)-MOF features NU-901 topology (scu net, with rhombus channels) and breathing properties (e.g., the contracted (porous) phase reverts to the as-made phase upon contact with DMF (dimethylformamide)). The inserted Co2(CO)8 guests quickly react with air to form atomically dispersed CoO species (nondiffracting), and subsequent thermal treatment at 600 °C of the CoO-loaded solid generates an electrocatalyst for the oxygen evolution reaction (OER).

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