Coordination‐Supported Imidazolate Networks: Water‐ and Heat‐Stable Mesoporous Polymers for Catalysis. Issue 42 (30th June 2017)

• Record Type: Journal Article
• Authors: Zhang, Pengfei; Yang, Shize; Chisholm, Matthew F.; Jiang, Xueguang; Huang, Caili; Dai, Sheng
• Is Part Of: Chemistry. Volume 23:Issue 42(2017)
• Page Start: 10038
• Page End: 10042
• Publication Date: 2017-06-30
• Subjects: coordination polymers -- mesoporous materials -- phenol oxidation -- polymers -- porous ionic liquids; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201702430
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: The poor water stability of most porous coordination polymers (PCPs) or metal‐organic frameworks (MOFs) is widely recognized as a barrier hampering their practical applications. Here, a facile and scalable route to prepare metal‐containing polymers with a good stability in boiling water (100 °C, 24 h) and air (up to 390 °C) is presented. The bifunctional 1‐vinylimidazole (VIm) with a coordinating site and a polymerizable organic group is introduced as the building block. This core strategy includes the synthesis of a rigid monomer with four VIm branches through a coordination process at room temperature, followed by a radical polymerization. We refer to this material as coordination‐supported imidazolate networks (CINs). Interestingly, CINs are composed of rich mesopores from 2–15 nm, as characterized by low‐energy (60 kV) STEM‐HAADF images. In particular, the stable CINs illustrate a high turnover frequency (TOF) of 779 h −1 in the catalytic oxidation of phenol with H2 O as the green solvent. Abstract : Omni‐stable polymers : Stable metal‐containing polymers are designed from versatile 1‐vinyl‐imidazole (VIm) with both coordinating sites and reactive organic groups. The synthetic strategy includes the coordination between VIm and metal ions (Zn 2+, Co 2+, Ni 2+ ), followed by a radical polymerization. This concept enables porous metal‐based polymers with exceptional stability in water (100 °C, 24 h) and air (up to 390 °C).