writer：Haolong Li, Yang Yang, Yizhan Wang, Chunyu Wang, Wen Li, Lixin Wu*
keywords：Hybrid assemblies, Porous polyoxometalate, Ion transport
source：期刊
specific source：Soft Matter 2011, 7, 2668-2673
Issue time：2011年

Spherical hybrid assemblies based on cationic surfactants and anionic porous polyoxometalate nanocapsules [{(Mo)Mo₅O₂₁(H₂O)₆}₁₂{Mo₂O₄(SO₄)}₃₀]⁷² (Mo₁₃₂ for short) are fabricated by the method combining an electrostatic encapsulation process and a polarity inducedself-assembly process. The spherical assemblies possess a size of several hundred nanometres and the incorporated Mo₁₃₂ nanocapsules self-organize into a cubic phase stacking state in the assemblies. The ion-trapping properties of Mo₁₃₂ are active in the assemblies, which enables the Mo₁₃₂ to uptake and release Li⁺ ions. Furthermore, the speed of Mo₁₃₂ uptaking and releasing Li⁺ ions in the assembliesis remarkably decreased compared with that of the naked Mo₁₃₂, which shows that the microenvironment of the assemblieshas an efficient blockage effect on the interaction and recognition between Mo₁₃₂ and Li⁺ ions, consequently delaying the ion-trapping process. This work not only presents a new route to assemble Mo₁₃₂ nanocapsules but also demonstrates a new concept of using the microenvironment of supramolecular assembliesto adjust the ion-trapping properties of Mo₁₃₂. 

 http://pubs.rsc.org/en/content/articlehtml/2011/sm/c0sm01044h