title: A panchromatic modification of the light absorption spectra of metal-organic frameworks.
abstract: The optical absorption of UiO-66-NH2 MOF was red-shifted using a diazo-coupling reaction. The modifications performed with naphthols and aniline yielded reddish samples, and the modifications with diphenylaniline yielded dark violet ones. The photocatalytic activity of these modified MOFs was assessed for methylene blue degradation, showing a good performance relative to traditional TiO2. The degradation performance was found to correlate with the red shift of the absorption edge. These findings suggest potential applications of these materials in photocatalysis and in dye sensitized solar cells.
authors.affiliation: Laboratory for Materials Science and Technology, FRSC-UTN, Av. Inmigrantes 555, Río Gallegos 9400, Argentina and Division of Porous Materials, UNIDEF, CITEDEF, CONICET, S. J. B de la Salle 4397, Villa Martelli (B1603ALO), Buenos Aires, Argentina. eotal@citedef.gob.ar.
authors.forename: E H
authors.initials: EH
authors.lastname: Otal
authors.affiliation: Laboratory for Materials Science and Technology, FRSC-UTN, Av. Inmigrantes 555, Río Gallegos 9400, Argentina and Division of Porous Materials, UNIDEF, CITEDEF, CONICET, S. J. B de la Salle 4397, Villa Martelli (B1603ALO), Buenos Aires, Argentina. eotal@citedef.gob.ar.
authors.forename: M L
authors.initials: ML
authors.lastname: Kim
authors.affiliation: Instituto de Ciencia de Materiales de Sevilla (Consejo Superior de Investigaciones Científicas-Universidad de Sevilla), C/Américo Vespucio 49, 41092 Sevilla, Spain.
authors.forename: M E
authors.initials: ME
authors.lastname: Calvo
authors.affiliation: Solid State Chemistry and Catalysis, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland.
authors.forename: L
authors.initials: L
authors.lastname: Karvonen
authors.affiliation: Division of Porous Materials, UNIDEF, CITEDEF, CONICET, S. J. B de la Salle 4397, Villa Martelli (B1603ALO), Buenos Aires, Argentina. eotal@citedef.gob.ar.
authors.forename: I O
authors.initials: IO
authors.lastname: Fabregas
authors.affiliation: Department of Chemistry, Faculty of Sciences, Universidad Nacional de Colombia, Bogotá, Colombia.
authors.forename: C A
authors.initials: CA
authors.lastname: Sierra
authors.affiliation: Laboratory of Textiles and Nanotechnology, Department of Fiber Science and Apparel Design, Cornell University, Ithaca, New York, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: Hinestroza