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dc.contributor.authorHenwood, Adam Francis
dc.contributor.authorHu, Yue
dc.contributor.authorSajjad, Muhammad Tariq
dc.contributor.authorThalluri, Venkata Visveswara Gopala Krishna
dc.contributor.authorGhosh, Sanjay Sanatan
dc.contributor.authorCordes, David Bradford
dc.contributor.authorSlawin, Alexandra Martha Zoya
dc.contributor.authorSamuel, Ifor David William
dc.contributor.authorRobertson, Neil
dc.contributor.authorZysman-Colman, Eli
dc.identifier.citationHenwood , A F , Hu , Y , Sajjad , M T , Thalluri , V V G K , Ghosh , S S , Cordes , D B , Slawin , A M Z , Samuel , I D W , Robertson , N & Zysman-Colman , E 2015 , ' Unprecedented strongly panchromic absorption from proton switchable iridium(III) azoimidazolate complexes ' , Chemistry - A European Journal , vol. 21 , no. 52 , pp. 19128-19135 .
dc.identifier.otherPURE: 225045876
dc.identifier.otherPURE UUID: a749f1c3-7303-4a79-b3c9-83f85f4ec5b5
dc.identifier.otherScopus: 84954568705
dc.identifier.otherORCID: /0000-0002-5366-9168/work/28023995
dc.identifier.otherORCID: /0000-0001-7183-6022/work/56639139
dc.identifier.otherORCID: /0000-0002-9527-6418/work/56862090
dc.identifier.otherWOS: 000368282100036
dc.description.abstractTwo novel heteroleptic iridium(III) complexes bearing an aryldiazoimidazole ligand are reported. These complexes differ structurally with respect to the protonation state of the imidazole ring, but can be independently accessed by varying the synthetic conditions. Their structures have been unequivocally confirmed by X-ray crystal structure analysis, with surprising differences in the structural parameters of the two complexes. The strongly absorbing nature of the free diazoimidazole ligand is enhanced in these iridium complexes, with the protonated cationic complex demonstrating extraordinarily strong panchromic absorption up to 700 nm. The absorption profile of the deprotonated neutral complex is blue-shifted by about 100 nm and thus the interconversion between the two complexes as a function of the acidity/basicity of the environment can be readily monitored by absorption spectroscopy. Theoretical calculations reveal the origins of these markedly different absorption properties. Finally, the protonated analogue has been targeted as an acceptor material for organic photovoltaic (OPV) applications and preliminary results are reported.
dc.relation.ispartofChemistry - A European Journalen
dc.rights© 2015 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en
dc.subjectPanchromic diazo liganden
dc.subjectQD Chemistryen
dc.titleUnprecedented strongly panchromic absorption from proton switchable iridium(III) azoimidazolate complexesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Chemistryen
dc.contributor.institutionUniversity of St Andrews.EaSTCHEMen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.description.statusPeer revieweden

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