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Ultrafast Energy Migration in Porphyrin-based Metal Organic Frameworks (MOFs)

Published online by Cambridge University Press:  21 August 2013

Sameer Patwardhan ,
Shengye Jin ,
Ho-Jin Son  and
George C. Schatz
Sameer Patwardhan
Affiliation:
Argonne-Northwestern Solar Energy Research Center, Northwestern University, 2145 Sheridan Road, Evanston, IL 20208-3113, U.S.A.
Shengye Jin
Affiliation:
Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, U.S.A.
Ho-Jin Son
Affiliation:
Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 20208-3113, U.S.A.
George C. Schatz
Affiliation:
Argonne-Northwestern Solar Energy Research Center, Northwestern University, 2145 Sheridan Road, Evanston, IL 20208-3113, U.S.A.
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Abstract

In this paper, we have studied the energy transport properties of two porphyrincontaining metal organic frameworks (MOFs) for light-harvesting applications. The photoinduced singlet exciton migration is investigated using fluorescence quenching experiments, whereas details on exciton transport anisotropy and net displacements are obtained using a Förster theory analysis. The striking difference in the energy-transport properties for the two MOFs, albeit for similar molecular organization, is attributed to dissimilar spatial expanse and difference in the electronic structure of their porphyrin struts. The observed exciton displacements, of up to 60 nm, provides motivation to explore new MOF materials. Several new linkers are considered, leading to predictions of MOF structures, which provide both broadwavelength harvesting and unidirectional energy transporting MOFs with selected examples.

Keywords

optoelectroniccatalyticcrystalline
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1539: Symposium D – From Molecules to Materials—Pathways to Artificial Photosynthesis , 2013 , mrss13-1539-d06-06
Copyright
Copyright © Materials Research Society 2013 

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References

REFERENCES

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