Scientists develop material with almost perfect water repellency

Phys.org  December 12, 2024 While the accessible pores render an enormous variety of functionalities to the bulk of metal–organic frameworks (MOFs), the outer surfaces exposed by these crystalline materials also offer unique characteristics not available when using conventional substrates. An international team of researchers (Germany, India) fabricated superhydrophobic substrates with static water contact angles over 160° by grafting hydrocarbon chains to well-defined MOF thin films (SURMOFs) prepared using layer-by-layer methods. A detailed theoretical modelling of the hydrocarbon chains grafted on the outer SURMOF surface with well-defined spacing between anchoring points revealed that the grafted hydrocarbon chains behaved similarly to polymer […]