TY - JOUR
T1 - Size-Dependent Properties of Solution-Processable Conductive MOF Nanocrystals
AU - Marshall, Checkers R.
AU - Dvorak, Josh P.
AU - Twight, Liam P.
AU - Chen, Lan
AU - Kadota, Kentaro
AU - Andreeva, Anastasia B.
AU - Overland, Alexandra E.
AU - Ericson, Thomas
AU - Cozzolino, Anthony F.
AU - Brozek, Carl K.
N1 - Funding Information:
We gratefully acknowledge the University of Oregon for startup funds. This work made use of the CAMCOR facility of the Lorry I. Lokey Laboratories at the University of Oregon to perform SEM experiments with assistance from Valerie Brogden. This material is based upon work supported by the National Science Foundation through the Division of Materials Research under grant no. DMR-2114430. We are especially grateful to Paul Kempler and Shannon Boettcher for invaluable discussions.
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/4/6
Y1 - 2022/4/6
N2 - The diverse optical, magnetic, and electronic behaviors of most colloidal semiconductor nanocrystals emerge from materials with limited structural and elemental compositions. Conductive metal-organic frameworks (MOFs) possess rich compositions with complex architectures but remain unexplored as nanocrystals, hindering their incorporation into scalable devices. Here, we report the controllable synthesis of conductive MOF nanoparticles based on Fe(1,2,3-triazolate)2. Sizes can be tuned to as small as 5.5 nm, ensuring indefinite colloidal stability. These solution-processable MOFs can be analyzed by solution-state spectroscopy and electrochemistry and cast into conductive thin films with excellent uniformity. This unprecedented analysis of MOF materials reveals a strong size dependence in optical and electronic behaviors sensitive to the intrinsic porosity and guest-host interactions of MOFs. These results provide a radical departure from typical MOF characterization, enabling insights into physical properties otherwise impossible with bulk analogues while offering a roadmap for the future of MOF nanoparticle synthesis and device fabrication.
AB - The diverse optical, magnetic, and electronic behaviors of most colloidal semiconductor nanocrystals emerge from materials with limited structural and elemental compositions. Conductive metal-organic frameworks (MOFs) possess rich compositions with complex architectures but remain unexplored as nanocrystals, hindering their incorporation into scalable devices. Here, we report the controllable synthesis of conductive MOF nanoparticles based on Fe(1,2,3-triazolate)2. Sizes can be tuned to as small as 5.5 nm, ensuring indefinite colloidal stability. These solution-processable MOFs can be analyzed by solution-state spectroscopy and electrochemistry and cast into conductive thin films with excellent uniformity. This unprecedented analysis of MOF materials reveals a strong size dependence in optical and electronic behaviors sensitive to the intrinsic porosity and guest-host interactions of MOFs. These results provide a radical departure from typical MOF characterization, enabling insights into physical properties otherwise impossible with bulk analogues while offering a roadmap for the future of MOF nanoparticle synthesis and device fabrication.
UR - http://www.scopus.com/inward/record.url?scp=85127878139&partnerID=8YFLogxK
U2 - 10.1021/jacs.1c10800
DO - 10.1021/jacs.1c10800
M3 - Article
C2 - 35344360
AN - SCOPUS:85127878139
VL - 144
SP - 5784
EP - 5794
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 13
ER -