Photons, Excitons, and Electrons in Covalent Organic Frameworks
Dominic Blätte1, Frank Ortmann2, Thomas Bein1
1Department of Chemistry and Center for NanoScience, University of Munich (LMU), Butenandtstr. 5-13, 81377 Munich, Germany.
Journal of the American Chemical Society
|November 18, 2024
Summary
Covalent organic frameworks (COFs) offer tunable optoelectronic properties by controlling their structure. These porous materials show promise in applications like photocatalysis and photovoltaics.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Covalent organic frameworks (COFs) are crystalline porous materials constructed from molecular building blocks.
- COFs offer diverse architectures with tunable properties for various applications.
- Recent research highlights the optoelectronic potential of COFs.
Purpose of the Study:
- To explore the relationship between the structural features of COFs and their optoelectronic properties.
- To review the impact of building blocks, connectivity, and morphology on optoelectronic behavior.
- To discuss emerging applications of COFs in optoelectronics, particularly photocatalysis and photoelectrochemistry.
Main Methods:
- Analysis of molecular building blocks and linkage chemistry.
- Investigation of layer stacking in 2D COFs.
- Control over defects, morphology, and thin film synthesis.
- Theoretical modeling of structural, electronic, and dynamic features.
- Review of recent applications in photocatalysis and photoelectrochemistry.
Main Results:
- Structural control over COFs allows tuning of photon absorption and emission.
- COFs can generate excitons and charge carriers for optoelectronic applications.
- The linkage chemistry and framework topology significantly influence electronic properties.
- Defect engineering and thin-film synthesis enable enhanced performance.
Conclusions:
- COFs present a powerful platform for designing materials with tailored optoelectronic properties.
- Significant progress has been made in understanding and controlling COF optoelectronics.
- Future research should focus on addressing current challenges and exploring new applications.
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