Surfactant-thermal method to prepare two new cobalt metal-organic frameworks

•Two novel metal-organic frame-works (MOFs).•Synthesis through surfactant-thermal condition.•weak antiferromagnetic behaviors for both compounds.

Employing surfactants as reaction media, two new metal-organic frameworks (MOFs):(HTEA)3[Co3(BTC)3] (NTU-Z33) and (HTEA)[Co3(HBTC)2(BTC)] (NTU-Z34) (H3BTC=1,3,5-benzenetricarboxylic acid, TEA=trimethylamine, and NTU=Nanyang Technological University), have been successfully synthesized and fully characterized. Note that NTU-Z33 has an unusual trimeric [Co3(COO)9] secondary building unit (SBU). Magnetic characterization suggests that both compounds have weak antiferromagnetic behaviors. Our success in preparing new crystalline Co-BTC based MOFs under different surfactant media could provide a new road to prepare new diverse MOFs through various combinations of surfactants.

Graphical abstractEmploying surfactants as reaction media, two new metal-organic frame-works (MOFs) have been successfully synthesized and magnetic study suggests that both compounds have weak antiferromagnetic behaviors.Figure optionsDownload full-size imageDownload as PowerPoint slide