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Updated: Mar 28, 2026

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

Published on: September 5, 2018

From Highly Crystalline to Outer Surface-Functionalized Covalent Organic Frameworks--A Modulation Approach.

Mona Calik¹, Torben Sick¹, Mirjam Dogru¹

¹Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU) , Butenandtstrasse 5-13, 81377 Munich, Germany.

Journal of the American Chemical Society

|December 24, 2015

Summary

A new synthesis method enhances covalent organic frameworks (COFs) crystallinity and porosity using a modulating agent. This approach yields larger COF domains and enables surface functionalization for diverse applications.

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Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

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Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

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Synthesis and Characterization of Functionalized Metal-organic Frameworks

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

Area of Science:

Materials Science
Nanotechnology
Chemistry

Background:

Crystallinity and porosity are critical for covalent organic frameworks (COFs) properties like adsorption and electronic transport.
Existing methods have limitations in controlling these structural features.

Purpose of the Study:

To develop a novel method for enhancing COF crystallinity and porosity.
To enable facile surface functionalization of COF domains.

Main Methods:

Introduction of a modulating agent during solvothermal COF synthesis.
Compositional analysis using NMR spectroscopy.
Visualization of modulator-terminated domains via iridium staining.

Main Results:

Achieved highly crystalline COFs with domain sizes up to several hundred nanometers.
Obtained materials with internal surface areas exceeding 2000 m²/g.
Demonstrated external surface functionalization with dyes and polymers.

Conclusions:

The modulation strategy significantly improves COF crystallinity and porosity.
This method offers a facile route for external surface functionalization of COFs.
The enhanced COFs are promising for applications in gas separations, catalysis, and optoelectronics.