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Subphthalocyanine encapsulated within MIL-101(Cr)-NH2 as a solar light photoredox catalyst for dehalogenation of α-haloacetophenones

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Abstract

Subphthalocyanine has been incorporated into a robust metal–organic framework having amino groups as binding sites. The resulting SubPc@MIL-101(Cr)-NH2 composite has a loading of 2 wt%. Adsorption of subphthalocyanine does not deteriorate host crystallinity, but decreases the surface area and porosity of MIL-101(Cr)-NH2. The resulting SubPc@MIL-101(Cr)-NH2 composite exhibits a 575 nm absorption band responsible for the observed photoredox catalytic activity under simulated sunlight irradiation for hydrogenative dehalogenation of α-haloacetophenones and for the coupling of α-bromoacetophenone and styrene. The material undergoes a slight deactivation upon reuse. In comparison to the case of phthalocyanines the present study is one of the few cases showing the use of subphthalocyanine as a photoredox catalyst, with its activity derived from site isolation within the MOF cavities.

Graphical abstract: Subphthalocyanine encapsulated within MIL-101(Cr)-NH2 as a solar light photoredox catalyst for dehalogenation of α-haloacetophenones

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Publication details

The article was received on 11 Oct 2019, accepted on 11 Nov 2019 and first published on 12 Nov 2019


Article type: Paper
DOI: 10.1039/C9DT04004H
Dalton Trans., 2019, Advance Article

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    Subphthalocyanine encapsulated within MIL-101(Cr)-NH2 as a solar light photoredox catalyst for dehalogenation of α-haloacetophenones

    A. Santiago-Portillo, S. Remiro-Buenamañana, S. Navalón and H. García, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C9DT04004H

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