Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237 (China).
Angew Chem Int Ed Engl. 2015 Dec 21;54(52):15789-93. doi: 10.1002/anie.201509071. Epub 2015 Nov 6.
The realization of controllable multicomponent self-assembly through reversible supramolecular interactions is a challenging goal, and is an important strategy for the fabrication of switchable nanomaterials. Herein we show that the self-assembly of TiO2 nanoparticles (NP) functionalized with methyl viologen can be controlled both by light irradiation and chemical reduction through cucurbit[8]uril-enhanced radical cation dimerization interactions. Moreover, the controlled assembly and disassembly of this system are accompanied by switchable photocatalytic activity of the TiO2 NPs, which shows potential application as a novel smart and recyclable photocatalyst.
通过可逆超分子相互作用实现可控的多组分自组装是一个具有挑战性的目标，也是制备可切换纳米材料的重要策略。在此，我们表明，通过葫芦[8]脲增强的自由基阳离子二聚相互作用，用光照射和化学还原可以控制功能化有甲紫精的 TiO2 纳米颗粒（NP）的自组装。此外，该体系的可控组装和拆卸伴随着 TiO2 NPs 的可切换光催化活性，这表明其作为新型智能可回收光催化剂具有潜在应用。
