Metal-organic frameworks/transition metal dichalcogenides van der waals heterostructures for ultra strong microwave absorption

Abstract

The present invention provides a general and scalable method for constructing metal-organic framework (MOF) and unconventional-phase transition-metal dichalcogenide (TMD) van der Waals epitaxial heterostructures. The method enables the oriented growth of diverse MOFs, including 1D, 2D, and porphyrinic frameworks with single- or mixed-metal centers, on metastable 1T′-TMD nanosheets such as 1T′-WS2 and 1T′-MoS2. The epitaxial interface formed between the MOF and TMD produces a well-defined crystallographic alignment and induces strong interfacial polarization and optimized dielectric behavior. As a representative embodiment, Cu-M/1T′-WS2 exhibits an ultralow reflection loss of −89.8 dB and a broad effective absorption bandwidth. The disclosed strategy establishes a versatile platform for designing high-performance electromagnetic-wave absorbing materials and other advanced organic-inorganic heterostructures.

Dependencies are inferred from the claim text.