An Electrically Conducting Three‐Dimensional Iron–Catecholate Porous Framework. (1st July 2021)

• Record Type: Journal Article
• Authors: Mähringer, Andre; Döblinger, Markus; Hennemann, Matthias; Gruber, Christoph; Fehn, Dominik; Scheurle, Patricia I.; Hosseini, Pouya; Santourian, Irina; Schirmacher, Alfred; Rotter, Julian M.; Wittstock, Gunther; Meyer, Karsten; Clark, Timothy; Bein, Thomas; Medina, Dana D.
• Is Part Of: Angewandte Chemie. Volume 133:Number 33(2021)
• Page Start: 18213
• Page End: 18220
• Publication Date: 2021-07-01
• Subjects: electrical conductivity -- iron-catecholate -- metal–organic frameworks -- porosity -- three-dimensional framework; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202102670
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: We report the synthesis of a unique cubic metal–organic framework (MOF), Fe‐HHTP‐MOF, comprising hexahydroxytriphenylene (HHTP) supertetrahedral units and Fe III ions, arranged in a diamond topology. The MOF is synthesized under solvothermal conditions, yielding a highly crystalline, deep black powder, with crystallites of 300–500 nm size and tetrahedral morphology. Nitrogen sorption analysis indicates a highly porous material with a surface area exceeding 1400 m 2 g −1 . Furthermore, Fe‐HHTP‐MOF shows broadband absorption from 475 up to 1900 nm with excellent absorption capability of 98.5 % of the incoming light over the visible spectral region. Electrical conductivity measurements of pressed pellets reveal a high intrinsic electrical conductivity of up to 10 −3 S cm −1 . Quantum mechanical calculations predict Fe‐HHTP‐MOF to be an efficient electron conductor, exhibiting continuous charge‐carrier pathways throughout the structure. Abstract : Fe‐HHTP‐MOF, a unique cubic metal–organic framework (MOF) comprising hexahydroxytriphenylene (HHTP) supertetrahedral units and Fe III ions arranged in a diamond topology is reported. Fe‐HHTP‐MOF is a highly crystalline, porous and deep black material featuring high electrical conductivity.