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Size-Dependent Properties of Solution-Processable Conductive MOF Nanocrystals
Checkers R Marshall1, Josh P Dvorak1, Liam P Twight1
1Department of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, Oregon 97403, United States.
Journal of the American Chemical Society
|March 28, 2022
Summary
We synthesized conductive metal-organic framework (MOF) nanoparticles, enabling new optical and electronic properties. These stable, solution-processable MOF nanoparticles offer a pathway for advanced device fabrication.
Area of Science:
- Materials Science
- Nanotechnology
- Chemistry
Background:
- Colloidal semiconductor nanocrystals exhibit diverse properties from limited compositions.
- Conductive metal-organic frameworks (MOFs) have complex structures but are unexplored as nanocrystals.
- This limits their use in scalable electronic and optical devices.
Purpose of the Study:
- To report the controllable synthesis of conductive MOF nanoparticles.
- To explore their optical, electronic, and stability properties.
- To enable MOF nanoparticle integration into devices.
Main Methods:
- Controllable synthesis of Fe(1,2,3-triazolate)2 MOF nanoparticles.
- Size tuning down to 5.5 nm with indefinite colloidal stability.
- Solution-state spectroscopy, electrochemistry, and thin-film casting.
Main Results:
- Demonstrated tunable synthesis of conductive MOF nanoparticles.
- Observed size-dependent optical and electronic behaviors.
- Showcased solution-processability and thin-film formation.
Conclusions:
- MOF nanoparticles offer a new platform for materials with tunable properties.
- Size, porosity, and guest-host interactions significantly influence MOF behavior.
- This work provides a roadmap for MOF nanoparticle synthesis and device applications.
