State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Qianjin Avenue 2699, Changchun, 130012, China.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
Angew Chem Int Ed Engl. 2017 Jul 24;56(31):9013-9017. doi: 10.1002/anie.201702785. Epub 2017 Jun 30.
A facile and electrostatically driven approach has been developed to prepare bicontinuous polymer nanocomposites that is based on the polyoxometalate (POM) macroion induced phase transition of PS-b-P2VP from an initial lamellar phase to a stable bicontinuous phase. The multi-charged POMs can electrostatically cross-link P2VP blocks and give rise to bicontinuous phases in which the POM hybrid conductive domains occupy a large volume fraction of more than 50 %. Furthermore, the POMs can give rise to high proton conductivity and serve as nanoenhancers, endowing the bicontinuous nanocomposites with a conductivity of 0.1 mS cm and a Young's modulus of 7.4 GPa at room temperature; these values are greater than those of pristine PS-b-P2VP by two orders of magnitude and a factor of 1.8, respectively. This approach can provide a new concept based on electrostatic control to design functional bicontinuous polymer materials.
一种简便的静电驱动方法被开发用于制备双连续聚合物纳米复合材料，该方法基于多酸（POM）大分子诱导 PS-b-P2VP 从初始层状相到稳定双连续相的相转变。多电荷的 POM 可以静电交联 P2VP 链段，并形成双连续相，其中 POM 杂化导电域占据超过 50%的大体积分数。此外，POM 可以赋予高质子电导率并作为纳米增强剂，使双连续纳米复合材料在室温下的电导率达到 0.1 mS cm，杨氏模量达到 7.4 GPa；这些值分别比原始 PS-b-P2VP 大两个数量级和 1.8 倍。这种方法可以为设计功能性双连续聚合物材料提供基于静电控制的新概念。
