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Hydrotalcite\u2010type phases were obtained with basal spacings of 17.6\u2005\u00c5 for the LDH intercalated by IC (IC\u2010LDH) and 18.2\u201318.3\u2005\u00c5 for the other materials containing HS. From the basal spacing for IC\u2010LDH and UV\/Vis spectroscopic data, it is proposed that the dye molecules assemble within the interlayer galleries to form a J\u2010type stacking arrangement. A comprehensive electronic spectral and photophysical study was undertaken for IC in solution and all materials, aiming to obtain a detailed characterization of the host\u2013guest and guest\u2013guest interactions. In solution (the solvent surrounded \u201cisolated\u201d molecule), IC presents a fast excited state proton transfer with rate constants of \u223c1.2\u20131.4\u00d710<jats:sup>11<\/jats:sup>\u2005s<jats:sup>\u22121<\/jats:sup>, which is linked to the very efficient radiationless deactivation channel. In the solid state it is shown that incorporation of IC within the LDH decreases the level of aggregation, and that further addition of HS induces the appearance of isolated IC units within the LDH galleries. The indigo carmine\u2010based nanocomposites reported constitute a step forward in the design of hybrid materials with tunable properties.<\/jats:p>","DOI":"10.1002\/chem.201501344","type":"journal-article","created":{"date-parts":[[2015,7,24]],"date-time":"2015-07-24T15:58:04Z","timestamp":1437753484000},"page":"12069-12078","source":"Crossref","is-referenced-by-count":20,"title":["An Indigo Carmine\u2010Based Hybrid Nanocomposite with Supramolecular Control of Dye Aggregation and Photobehavior"],"prefix":"10.1002","volume":"21","author":[{"given":"Ana L.","family":"Costa","sequence":"first","affiliation":[]},{"given":"Ana C.","family":"Gomes","sequence":"additional","affiliation":[]},{"given":"Martyn","family":"Pillinger","sequence":"additional","affiliation":[]},{"given":"Isabel S.","family":"Gon\u00e7alves","sequence":"additional","affiliation":[]},{"given":"J. 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