A study published in *Nature Catalysis* (2024) investigates the formation of an electrochemical microenvironment at the nanoparticle-ligand interface using in situ infrared nanospectroscopy (nano-FTIR) and surface-enhanced Raman spectroscopy (SERS). The research reveals that electrochemical bias induces a consecutive bond cleavage mechanism in surface ligands, leading to the formation of a nanoparticle/ordered ligand interlayer (NOLI), which is crucial for efficient CO₂ to CO conversion. The NOLI creates a microenvironment with favorable non-covalent interactions, enhancing catalytic performance. The study also demonstrates the ability to capture nanometer-resolved dynamic molecular events, offering insights into the localized behavior of ligands under electrochemical conditions. The findings highlight the importance of ligand dynamics in determining the functionality of NP-ligand systems and provide a framework for designing controlled microenvironments in catalytic systems. The research combines experimental techniques with density functional theory (DFT) calculations to elucidate the structural and electronic changes during ligand dissociation and interlayer formation. The study underscores the role of ligand behavior in electrocatalysis and offers a pathway for rational design of responsive ligand-nanoparticle systems with tailored functionalities.A study published in *Nature Catalysis* (2024) investigates the formation of an electrochemical microenvironment at the nanoparticle-ligand interface using in situ infrared nanospectroscopy (nano-FTIR) and surface-enhanced Raman spectroscopy (SERS). The research reveals that electrochemical bias induces a consecutive bond cleavage mechanism in surface ligands, leading to the formation of a nanoparticle/ordered ligand interlayer (NOLI), which is crucial for efficient CO₂ to CO conversion. The NOLI creates a microenvironment with favorable non-covalent interactions, enhancing catalytic performance. The study also demonstrates the ability to capture nanometer-resolved dynamic molecular events, offering insights into the localized behavior of ligands under electrochemical conditions. The findings highlight the importance of ligand dynamics in determining the functionality of NP-ligand systems and provide a framework for designing controlled microenvironments in catalytic systems. The research combines experimental techniques with density functional theory (DFT) calculations to elucidate the structural and electronic changes during ligand dissociation and interlayer formation. The study underscores the role of ligand behavior in electrocatalysis and offers a pathway for rational design of responsive ligand-nanoparticle systems with tailored functionalities.