A stable metal-covalent-supramolecular organic framework hybrid: enrichment of catalysts for visible light-induced hydrogen production

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2018,（7）
• 页码范围: 830-835
• 页数: 6页
• 语种: 英文

摘要

Cubic metal-covalent-supramolecular organic framework (MCSOF-1) hybrid has been created from the reaction of two molecular components and subsequent co-assembly with cucurbit[8]uril (CB[8]) in water.In the presence of CB[8],[Ru(bpy)3]2+ -based acylhydrazine 1·2Cl reacted with aldehyde 2·Cl to quantitatively yield six-armed precursor 3·8Cl through the generation of MCSOF-1.MCSOF-1 combines the structural features of metal-,covalent-and supramolecular organic frameworks.Its periodicity in water and in the solid state was confirmed by synchrotron X-ray scattering and diffraction experiments.MCSOF-1 could enrich discrete anionic polyoxometalates (POMs),maintain periodicity in acidic medium,and remarkably facilitate visible light-induced electron transfer from its [Ru(bpy)3]2+ units to enriched POMs,leading to enhanced catalysis of the POMs for the reduction of proton to H2 in both aqueous (homogeneous) and organic (heterogeneous) media.