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Gam‐Derouich, Sarra; Bourdillon, Céline; Lakhdar Chaouche, Soraya; Coolen, Laurent; Maître, Agnès; Mangeney, Claire; Schwob, Catherine
Angewandte Chemie, August 7, 2017, Letnik: 129, Številka: 33Journal Article
Sensors based on responsive photonic hydrogels have recently attracted considerable attention for visual medical diagnostics, pharmaceutical bioassays, and environmental monitoring. However, the use of these promising materials for the detection of nanoparticles (NPs) has never been explored so far, although the sensing of nanoobjects is a rapidly evolving area of research. To address this issue, we have combined the concepts of inverse‐opal hydrogels and nanoparticle‐imprinted polymers. In this way, we could obtain a NP‐imprinted photonic hydrogel consisting of a three‐dimensional, highly ordered poly(methacrylic acid) macroporous array, in which nanocavities complementary to the target NPs, in this case colloidal quantum dots, are distributed. This novel type of NP‐imprinted photonic hydrogel sensor was shown to display high sensitivity and selectivity, thus opening new prospects for the development of equipment‐free and cost‐efficient sensing devices for NPs. Wenn das Ziel ein kleiner Punkt ist: Photonische Hydrogele, die die Konzepte inverser Opale und nanopartikelgeprägter Polymere in sich vereinen, wurden für den Nachweis von kolloidalen Quantenpunkten (QDs) genutzt. Sie zeigen hohe Empfindlichkeit und Selektivität für die Ziel‐QDs und eröffnen damit neue Perspektiven für die Entwicklung von kostengünstigen Nachweissystemen für Nanopartikel.
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