Pure Anisotropic Hydrogel with an Inherent Chiral Internal Structure Based on the Chiral Nematic Liquid Crystal Phase of Rodlike Viruses.
Pure Anisotropic Hydrogel with an Inherent Chiral Internal Structure Based on the Chiral Nematic Liquid Crystal Phase of Rodlike Viruses.
复制标题
DOI：
10.1021/acsmacrolett.5b00677
复制
发表时间：
2015-10
影响因子：
5.8
通讯作者：
Xiaodong Pei;Tingting Zan;Hengming Li;Yingjun Chen;Linqi Shi;Zhenkun Zhang
中科院分区：
文献类型：
--
作者：
Xiaodong Pei;Tingting Zan;Hengming Li;Yingjun Chen;Linqi Shi;Zhenkun Zhang
将有序结构赋予无定形水凝胶有望赋予这些受欢迎的材料新的多刺激响应性，有望应用于许多领域。目前的贡献报道了一种通过在棒状病毒的手性向列液晶相上模板来制备具有固有手性内部结构的纯聚合物水凝胶的方法。发展了一种在单体、交联剂和引发剂存在下通过限制诱导自组装形成宏观均相手性模板的方法。聚合诱导的凝胶化不会干扰含有双键的棒状病毒优雅的3D手性组织。此外，发现了一种合适的方法来去除有机病毒模板，同时保持所需的聚合物复制品的完整性，从而得到具有独特的内部手性特征的纯聚合物水凝胶，其起源于病毒留下的圆柱孔的3D手性有序化。多刺激响应性已经被证明，并且可以通过手性特征的音调的变化来量化。这种手性结构赋予了原本平淡无奇的水凝胶独特的材料性质，可以用作传感的读出信号，并作为响应性、仿生纳米结构材料的基础。
Imparting ordered structures into otherwise amorphous hydrogels is expected to endow these popular materials with novel multiple-stimuli responsiveness that promises many applications. The current contribution reports a method to fabricate pure polymeric hydrogels with an inherent chiral internal structure by templating on the chiral nematic liquid crystal phase of a rodlike virus. A method was developed to form macroscopically homogeneous chiral templates by confinement induced self-assembly in the presence of monomers, cross-linkers and initiators. Polymerization induced gelation was performed without perturbing the elegant 3D chiral organization of the rodlike virus bearing double bonds. Furthermore, a suitable method was found to remove the organic virus template while keeping the desired polymeric replica intact, resulting in a pure polymeric hydrogel with a unique internal chiral feature that originates from the 3D chiral ordering of the cylindrical pores left by the virus. Multiple-stimuli responsiveness has been demonstrated and can be quantified by the change of the pitch of the chiral feature. The chiral structure endows the otherwise featureless hydrogel with a unique material property that might be used as a readout signal for sensing and acts as the basis for responsive, biomimetic nanostructured materials.