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Updated: May 6, 2026

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Modulating guest binding in sulfonylcalixarene-based metal-organic supercontainers
Feng-Rong Dai1, Dustin C Becht, Zhenqiang Wang
1Department of Chemistry, University of South Dakota, Churchill-Haines Laboratories, Room 115, 414 East Clark Street, Vermillion, South Dakota 57069-2390, USA. Zhenqiang.Wang@usd.edu.
Researchers developed anionic metal-organic supercontainers (MOSCs) with unique cavity-specific binding. These functionalized MOSCs show promise for selective molecular recognition in various states.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Nanotechnology
Background:
- Metal-organic supercontainers (MOSCs) are novel synthetic receptors with internal (endo) and external (exo) cavities.
- Functionalization of MOSCs can alter their properties for specific applications.
Purpose of the Study:
- To create an anionic metal-organic supercontainer (MOSC) by incorporating sulfo groups.
- To investigate the cavity-specific binding properties of the anionic MOSC.
Main Methods:
- Synthesis of a neutral MOSC precursor.
- Functionalization of the MOSC with sulfo groups to create an anionic form.
- Characterization of binding properties in both solid-state and solution.
Main Results:
- Successful synthesis of an anionic MOSC through sulfo group incorporation.
- Demonstration of distinct, cavity-specific binding capabilities of the anionic MOSC.
- Confirmation of these binding properties in both solid and solution phases.
Conclusions:
- Anionic MOSCs can be effectively synthesized and exhibit tailored binding selectivity.
- The developed anionic MOSC is a promising platform for applications requiring specific molecular recognition.
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