Boecker Marcel, Micheel Mathias, Mengele Alexander K, Neumann Christof, Herberger Tilmann, Marchesi D'Alvise Tommaso, Liu Bei, Undisz Andreas, Rau Sven, Turchanin Andrey, Synatschke Christopher V, Wächtler Maria, Weil Tanja
Department for Synthesis of Macromolecules, Max Planck Institute for Polymer Research, 55128 Mainz, Germany.
Department of Functional Interfaces, Leibniz Institute of Photonic Technology, 07745 Jena, Germany.
ACS Appl Nano Mater. 2021 Dec 24;4(12):12913-12919. doi: 10.1021/acsanm.1c02994. Epub 2021 Dec 2.
We report on a photocatalytic system consisting of CdSe@CdS nanorods coated with a polydopamine (PDA) shell functionalized with molecular rhodium catalysts. The PDA shell was implemented to enhance the photostability of the photosensitizer, to act as a charge-transfer mediator between the nanorods and the catalyst, and to offer multiple options for stable covalent functionalization. This allows for spatial proximity and efficient shuttling of charges between the sensitizer and the reaction center. The activity of the photocatalytic system was demonstrated by light-driven reduction of nicotinamide adenine dinucleotide (NAD) to its reduced form NADH. This work shows that PDA-coated nanostructures present an attractive platform for covalent attachment of reduction and oxidation reaction centers for photocatalytic applications.
我们报道了一种光催化体系，该体系由包覆有聚多巴胺（PDA）壳层且用分子铑催化剂功能化的CdSe@CdS纳米棒组成。实施PDA壳层是为了增强光敏剂的光稳定性，充当纳米棒与催化剂之间的电荷转移介质，并提供多种稳定共价功能化的选择。这使得敏化剂与反应中心之间能够实现空间接近并高效地进行电荷穿梭。通过光驱动将烟酰胺腺嘌呤二核苷酸（NAD）还原为其还原形式NADH，证明了该光催化体系的活性。这项工作表明，涂覆PDA的纳米结构为光催化应用中还原和氧化反应中心的共价连接提供了一个有吸引力的平台。
