Something New: Metal-Organic Frameworks as Functional Light Harvesters and Solar-Fuels Catalyst Scaffolds

Joseph Hupp^a

^aDepartment of Chemistry, Northwestern University, United States, Sheridan Road, 2145, Evanston, United States

^bArgonne National Laboratory, 9800 South Cass Ave., Argonne, IL, 60439, United States

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)

Roma, Italy, 2015 May 11th - 13th

Organizer: Filippo De Angelis

Invited Speaker, Joseph Hupp, presentation 367
Publication date: 5th February 2015

Metal-organic framework (MOF) materials can be assembled in automated layer-by-layer fashion as electrode-supported thin films with near single-molecular-layer control over film thickness. The films can be constructed from chromophoric building blocks, such as porphyrins, perylene diimides, or BODIPY species. Because the films can be assembled in spatially oriented, crystalline form, using multiple chromophores, they offer attractive systems for investigating: a) antenna-type light-harvesting behavior, b) long-range, directional energy transfer, and c) directional charge transport. By combining MOF chemistry with atomic-layer deposition (ALD) they can also function as scaffolds for assembly and application of electrocatalysts for water oxidation, water reduction, carbon dioxide reduction, and so on. Key to these applications has been the experimental realization of synthetic chemistry that produces water-stable, aq. acid stable, and aq. base stable MOFs. Ultrafast spectroscopy, synchrotron based X-ray methods, transient electrochemistry, wall-jet electrochemistry, and related methods have been used to investigate these materials and the energy-relevant processes associated with them. Recent results for some of these topics will be described.

So, M. C.; Beyzavi, M. H.; Sawhney, R.; Shekhah, O.; Eddaoudi, M.; Al-Juaid, S. S.; Hupp, J. T.; Farha, O. K. Post-assembly transformations of porphyrin-containing metal-organic framework (MOF) films fabricated via automated layer-by-layer coordination. Chem. Commun. 2015, 51, 85-88. Son, H-J., et al. Light-Harvesting and Ultrafast Energy Migration in Porphyrin-Based Metal-Organic Frameworks. J. Am. Chem. Soc. 2013, 135, 862-869. Mondloch, J. E., et al. Vapor-Phase Metalation by Atomic Layer Deposition in a Metal-Organic Framework. J. Am. Chem. Soc. 2013, 135, 10294-10297.

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