Abstract
Cathodic electrodeposition lends itself to the formation of biphasic metal–organic framework thin films at room temperature from single deposition baths using potential bias as the main user input. Depending on the applied potential, we selectively deposit two different phases as either bulk mixtures or bilayer films.
Highlights
Cathodic electrodeposition lends itself to the formation of biphasic metal–organic framework thin films at room temperature from single deposition baths using potential bias as the main user input
We recently reported that electrodes can be used as chemically inert spectators and only as sources of electrons when employed in cathodic metal–organic frameworks (MOFs) electrodeposition schemes.[31]
We reasoned that two effects may come into play when large concentrations of Et3NH+ are present in the electrodeposition bath: (1) any Zn that could plate is etched away by the Et3NH+ acid according to eqn (IV), and (2) the presence of a large concentration of Et3NH+ effectively buffers the pH and may never allow the accumulation of enough Et3N to induce the formation of a different crystalline phase such as MOF-5
Summary
Cathodic electrodeposition lends itself to the formation of biphasic metal–organic framework thin films at room temperature from single deposition baths using potential bias as the main user input. Because the anode provides the metal ions for the MOF and is necessarily corroded during this process, anodic methods offer limited choices in terms of electrode surfaces, have far yielded only single-phase MOFs, and may not be best suited for the formation of more complex lms To address these challenges, we recently reported that electrodes can be used as chemically inert spectators and only as sources of electrons when employed in cathodic MOF electrodeposition schemes.[31] We initially surmised that aqueous reduction of oxoanions such as NO3À, which produces hydroxide, would raise the pH of the solution near the cathode and induce crystallization of MOFs in an electrolysis bath containing the respective ligand and metal precursor by slowly deprotonating the ligand. We aimed to replace it with one of the reactions in eqn (I–III), which were potential
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
