Photoactive Hexanuclear Molybdenum Nanoclusters Embedded in Molecular Organogels
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7053
comunitat-uji-handle3:10234/8639
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Title
Photoactive Hexanuclear Molybdenum Nanoclusters Embedded in Molecular OrganogelsAuthor (s)
Date
2019-07-05Publisher
American Chemical SocietyBibliographic citation
ARNAU DEL VALLE, Carla, et al. Photoactive Hexanuclear Molybdenum Nanoclusters Embedded in Molecular Organogels. Inorganic chemistry, 2019, 58.14: 8900-8905.Type
info:eu-repo/semantics/articlePublisher version
https://pubs.acs.org/doi/abs/10.1021/acs.inorgchem.9b00916Version
info:eu-repo/semantics/submittedVersionSubject
Abstract
Hexanuclear molybdenum clusters are attractive species because of their outstanding photonic properties, and in the past they have been attached to a variety of supports such as organic polymers and inorganic nanopa ... [+]
Hexanuclear molybdenum clusters are attractive species because of their outstanding photonic properties, and in the past they have been attached to a variety of supports such as organic polymers and inorganic nanoparticles, as described in the recent literature. Here, a cluster of the formula TBA2[Mo6I8Ac6] (TBA = tetrabutylammonium; Ac = acetate) has been supported on molecular organogels for the first time, resulting in a new soft material with remarkable photoactivity. Electron and confocal microscopic analyses showed the alignment of the nanoclusters to 1D self-assembled fibers formed by the organic gelator, and emission spectroscopy corroborated the interaction of the emissive clusters with such fibrillary structures. The new hybrid system is a deep-red emissive material (phosphorescence maximum at ca. 680 nm), with chromatic coordinates x = 0.725 and y = 0.274, capable of efficiently generating singlet oxygen (1O2) upon illumination with white light, as demonstrated by the photooxygenation of 9,10-dimethylanthracene and 1,5-dihydroxynaphthalene. The organogels can been made in dichloromethane and toluene and in both solvents display phosphorescence emission and photocatalytic properties. [-]
Investigation project
Ministerio de Economía y Competitividad of Spain (Grant CTQ2015-71004-R) ; Universitat Jaume I (UJI; Grant P1.1B2015-76)Rights
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