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Structure-switching M3L2 Ir(III) coordination cages with photo-isomerising azo-aromatic linkers
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dc.contributor.author | Oldknow, Samuel | |
dc.contributor.author | Martir, Diego Rota | |
dc.contributor.author | Pritchard, Victoria E. | |
dc.contributor.author | Blitz, Mark A. | |
dc.contributor.author | Fishwick, Colin W.G. | |
dc.contributor.author | Zysman-Colman, Eli | |
dc.contributor.author | Hardie, Michaele J. | |
dc.date.accessioned | 2018-11-23T12:30:11Z | |
dc.date.available | 2018-11-23T12:30:11Z | |
dc.date.issued | 2018-11-14 | |
dc.identifier | 256673350 | |
dc.identifier | 8659a6da-e9c9-4874-a596-c75b0b4531c3 | |
dc.identifier | 85056097784 | |
dc.identifier | 000451448000016 | |
dc.identifier.citation | Oldknow , S , Martir , D R , Pritchard , V E , Blitz , M A , Fishwick , C W G , Zysman-Colman , E & Hardie , M J 2018 , ' Structure-switching M 3 L 2 Ir(III) coordination cages with photo-isomerising azo-aromatic linkers ' , Chemical Science , vol. 9 , no. 42 , pp. 8150-8159 . https://doi.org/10.1039/c8sc03499k | en |
dc.identifier.issn | 2041-6520 | |
dc.identifier.other | ORCID: /0000-0001-7183-6022/work/56639125 | |
dc.identifier.uri | https://hdl.handle.net/10023/16536 | |
dc.description | This work was supported by The Leverhulme Trust (RPG-2014-148), EPSRC (EP/M02105X/1, 1238852 (VEP), equipment grant EP/K039202/1). This work was carried out with support of Diamond Light Source (MT-10344). | en |
dc.description.abstract | Cyclotriguaiacylene has been functionalised with 3- or 4-pyridyl-azo-phenyl groups to form a series of molecular hosts with three azobenzene-type groups that exhibit reversible photo-isomerisation. Reaction of the host molecules with [Ir(C^N)2(NCMe)2]+ where C^N is the cyclometallating 2-phenylpyridinato, 2-(4-methylphenyl)pyridinato or 2-(4,5,6-trifluorophenyl)pyridinato results in the self-assembly of a family of five different [{Ir(C^N)2}3(L)2]3+ coordination cages. Photo-irradiation of each of the cages with a high energy laser results in E → Z photo-isomerisation of the pyridyl-azo-phenyl groups with up to 40% of groups isomerising. Isomerisation can be reversed by exposure to blue light. Thus, the cages show reversible structure-switching while maintaining their compositional integrity. This represents the largest photo-induced structural change yet reported for a structurally-integral component of a coordination cage. Energy minimised molecular models indicate a switched cage has a smaller internal space than the initial all-E isomer. The [Ir(C^N)2(NCMe)2]+ cages are weakly emissive, each with a deep blue luminescence at ca. 450 nm. | |
dc.format.extent | 10 | |
dc.format.extent | 1459607 | |
dc.language.iso | eng | |
dc.relation.ispartof | Chemical Science | en |
dc.subject | QD Chemistry | en |
dc.subject | DAS | en |
dc.subject.lcc | QD | en |
dc.title | Structure-switching M3L2 Ir(III) coordination cages with photo-isomerising azo-aromatic linkers | en |
dc.type | Journal article | en |
dc.contributor.sponsor | The Leverhulme Trust | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. Organic Semiconductor Centre | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.identifier.doi | 10.1039/c8sc03499k | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | RPG-2016-047 | en |
dc.identifier.grantnumber | EP/M02105X/1 | en |
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