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Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Related Experiment Video

Updated: Oct 13, 2025

Synthesis and Characterization of Functionalized Metal-organic Frameworks
11:27

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

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Building Unit Extractor for Metal-Organic Frameworks.

Prosun Halder1, Prerna1, Jayant K Singh1,2

  • 1Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India.

Journal of Chemical Information and Modeling
|November 18, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces MOF BU developer (mBUD), a platform for extracting building units (BUs) from metal-organic frameworks (MOFs). mBUD simplifies MOF deconstruction, creating a database to aid in designing new MOFs for specific applications.

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Area of Science:

  • Materials Science
  • Crystallography
  • Computational Chemistry

Background:

  • Metal-organic frameworks (MOFs) are highly tunable materials with significant applications in gas adsorption, separation, and energy storage.
  • Generating comprehensive MOF databases is crucial for materials discovery, but requires efficient pre-processing, including building unit (BU) extraction.
  • Extracting BUs from MOF structures is complex, especially when solvent molecules or ions are present.

Purpose of the Study:

  • To present MOF BU developer (mBUD), a novel platform designed for the deconstruction of MOF building units.
  • To create a comprehensive and accessible database of unique MOF BUs.
  • To facilitate the development of hypothetical MOF structures and aid in the design of novel, application-specific MOFs.

Main Methods:

  • Development of a deconstruction algorithm within the mBUD platform to identify and extract metal nodes, organic linkers, and functional groups.
  • Assessment of the mBUD deconstruction algorithm using MOF structures from the CoRE MOF 2019 database.
  • Generation of a database containing 2,580 extracted BUs and provision of a web-based version of mBUD.

Main Results:

  • Successfully deconstructed and extracted a total of 2,580 unique building units (BUs) from the CoRE MOF 2019 database.
  • Established a ready-to-use database of MOF BUs, including metal nodes, organic linkers, and functional groups.
  • Developed a user-friendly web version of the mBUD platform for accessible BU extraction.

Conclusions:

  • The mBUD platform effectively deconstructs MOF structures to extract essential building units.
  • The generated BU database and mBUD tool simplify the process of MOF analysis and design.
  • This work is expected to accelerate the discovery and development of novel MOFs tailored for specific applications.