Diacetylene Functionalized Covalent Organic Framework (COF) for Photocatalytic Hydrogen Generation

• DOI: 10.1021/jacs.7b11255
• Publication Date: 2017-12-29T23:41:10Z
• Authors: Pradip Pachfule; Amitava Acharjya; Jérôme Roeser; Thomas Langenhahn; Michael Schwarze; Reinhard Schomäcker; Arne Thomas; Johannes Schmidt
• Keywords: Diacetylene; Covalent organic framework; Acetylene; Imine; Chemical Stability

Covalent organic frameworks (COFs) are crystalline, highly porous, two- or three-dimensional polymers with tunable topology and functionalities. Because of their higher chemical stabilities in comparison to boron-linked counterparts, imine β-ketoenamine linked COFs have been utilized for a broad range applications, including gas storage, heterogeneous catalysis, energy storage devices, proton-conductive membranes. Herein, we report the synthesis porous chemically stable acetylene (−C≡C−) diacetylene (−C≡C–C≡C−) functionalized COFs, which applied as photocatalyst hydrogen generation from water. It is shown that moieties profound effect diacetylene-based COF largely outperforms acetylene-based terms photocatalytic activity. As combined high porosity, easily accessible functionalities considerable stability, an efficient recyclable achieved.