Saha, RajatRajatSahaSharma, AmitoshAmitoshSharmaSiddiqui, Anjila I.Anjila I.SiddiquiBenmansour, SamiaSamiaBenmansourOrtega-Castro, JoaquínJoaquínOrtega-CastroFrontera, AntonioAntonioFronteraMondal, BiswajitBiswajitMondalLah, Myoung SooMyoung SooLahGómez García, Carlos J.Carlos J.Gómez García2025-08-312025-08-312025-04-3010.1039/d5sc02474a2-s2.0-105004063210https://d8.irins.org/handle/IITG2025/28165Proton coupled electron transfer (PCET) is considered as the elementary step of several chemical, electrochemical and biological processes and thus the development of dual conducting materials has recently become a major focus in Chemical Science. Herein, we report the highly selective electrocatalytic oxygen reduction to water by the stable dual conducting metal-organic material (MOM) [Cu(INA)<inf>2</inf>(H<inf>2</inf>O)<inf>4</inf>] (INA = isonicotinate). Structural analysis reveals the important role of both, hydrogen bonding and π-interactions, in the formation of a supramolecular 3D network. Theoretical calculations show that hydrogen bonding interactions among the coordinated water molecules and deprotonated carboxylate oxygen atoms induce proton transport (2.26 ± 0.10 × 10⁻⁵ S cm⁻¹ at 98% RH) while weak intermolecular π-interactions (π-π and anion-π) provide the pathway for electron transport (1.4 ± 0.1 × 10⁻⁷ S cm⁻¹ at 400 K). Such dual proton and electron conductivity leads to a selective oxygen reduction reaction (ORR) to water in an alkaline medium. To the best of our knowledge, this is the first report on electrocatalytic ORR by a dual-conducting metal-organic material.falseArticlehttps://pubs.rsc.org/en/content/articlepdf/2025/sc/d5sc02474a204165399501-950830 April 20250arJournal2WOS:001478804400001