Related Experiment Video
Updated: May 22, 2026

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Mechanistic Insights Into Nitric Oxide Capture and Release in a Radical-Scavenging Zinc Ascorbate Metal-Organic
Tia Kristian Tajnšek1, Petar Djinović1,2, Matej Huš1,3,4
1National Institute of Chemistry Ljubljana Slovenia.
Abstract:
Efficient capture and controlled release of nitric oxide (NO) are essential for therapeutic gas delivery. Here, we investigate NO sorption in bioNICS-1, a zinc-based ascorbate metal-organic framework (MOF), and its propionic acid-modified analogue (bioNICS1-actPA). Structural modulation enhances NO uptake and retention, as evidenced by equilibrium isotherms and pronounced desorption hysteresis that reflect strong host-guest interactions. PXRD and TEM studies reveal adaptive unit-cell distortions upon adsorption, while kinetic and density functional theory (DFT) calculations identify multiple binding sites with distinct interaction strengths. Controlled-release experiments demonstrate humidity-triggered desorption, enabling finely regulated NO delivery. This work uncovers a previously unreported NO binding mechanism in MOFs and establishes radical-scavenging linkers as a powerful design concept for targeted gas capture, positioning bioNICS-1 as a versatile platform for next-generation therapeutic gas delivery technologies.
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