Projects per year
Abstract
Engendering electrical conductivity in high-porosity metal-organic frameworks (MOFs) promises to unlock the full potential of MOFs for electrical energy storage, electrocatalysis, or integration of MOFs with conventional electronic materials. Here we report that a porous zirconium-node-containing MOF, NU-901, can be rendered electronically conductive by physically encapsulating C60, an excellent electron acceptor, within a fraction (ca. 60%) of the diamond-shaped cavities of the MOF. The cavities are defined by node-connected tetra-phenyl-carboxylated pyrene linkers, i.e. species that are excellent electron donors. The bulk electrical conductivity of the MOF is shown to increase from immeasurably low to 10-3 S cm-1, following fullerene incorporation. The observed conductivity originates from electron donor-acceptor interactions, i.e. charge-transfer interactions-a conclusion that is supported by density functional theory calculations and by the observation of a charge-transfer-derived band in the electronic absorption spectrum of the hybrid material. Notably, the conductive version of the MOF retains substantial nanoscale porosity and continues to display a sizable internal surface area, suggesting potential future applications that capitalize on the ability of the material to sorb molecular species.
Original language | English (US) |
---|---|
Pages (from-to) | 4477-4482 |
Number of pages | 6 |
Journal | Chemical Science |
Volume | 9 |
Issue number | 19 |
DOIs | |
State | Published - 2018 |
Bibliographical note
Funding Information:J. T. H. and C. J. C. gratefully acknowledge support from the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences (grant no. DE-FG02-17ER16362). SEM images were obtained by using the EPIC facility (NUANCE Center, Northwestern University), which has received support from the MRSEC program (NSF DMR-1121262) at the Materials Research Center, the International Institute for Nanotechnology (IIN), and the State of Illinois, through the IIN.
Funding Information:
J. T. H. and C. J. C. gratefully acknowledge support from the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences (grant no. DE-FG02-17ER16362). SEM images were obtained by using the EPIC facility (NUANCE Center, North-western University), which has received support from the MRSEC program (NSF DMR-1121262) at the Materials Research Center, the International Institute for Nanotechnology (IIN), and the State of Illinois, through the IIN.
Publisher Copyright:
© 2018 The Royal Society of Chemistry.
Fingerprint
Dive into the research topics of 'A porous, electrically conductive hexa-zirconium(iv) metal-organic framework'. Together they form a unique fingerprint.Projects
- 1 Finished