Department of Chemistry, School of Science, Tokai University, Kanagawa 259-1292, Japan.
Department of Applied Chemistry, School of Engineering, Tokai University, Kanagawa 259-1292, Japan.
Int J Mol Sci. 2023 Feb 1;24(3):2824. doi: 10.3390/ijms24032824.
Surfactants are functional molecules utilized in various situations. The self-assembling property of surfactants enables several molecular arrangements that can be employed to build up nanometer-sized architectures. This is beneficial in the construction of functional inorganic-organic hybrids holding the merits of both inorganic and organic components. Among several surfactants, bolaamphiphile surfactants with two hydrophilic heads are effective, as they have multiple connecting or coordinating sites in one molecule. Here, a functional polyoxotungstate inorganic anion was successfully hybridized with a bolaamphiphile to form single crystals with anisotropic one-dimensional alignment of polyoxotungstate. Keggin-type metatungstate ([HWO], HW) was employed as an inorganic anion, and 1,12-dodecamethylenediammonium (CN) derived from 1,12-dodecanediamine was combined as an organic counterpart. A simple and general ion-exchange reaction provided a hybrid crystal consisting of HW and CN (CN-HW). Single crystal X-ray structure analyses revealed a characteristic honeycomb structure in the CN-HW hybrid crystal, which is possibly effective for the emergence of conductivity due to the dissociative protons of CN.
表面活性剂是在各种情况下使用的功能分子。表面活性剂的自组装性质使其能够进行多种分子排列，从而构建纳米级结构。这对于构建具有无机和有机成分优点的功能性无机-有机杂化材料非常有益。在几种表面活性剂中，具有两个亲水头部的双极性两性嵌段表面活性剂非常有效，因为它们在一个分子中有多个连接或配位位点。在这里，成功地将功能性多钨酸盐无机阴离子与双极性两性嵌段表面活性剂杂交，形成了具有各向异性一维排列的多钨酸盐单晶。采用 Keggin 型杂多钨酸盐 ([HWO]，HW) 作为无机阴离子，1,12-十二亚甲基二胺衍生的 1,12-十二烷二铵 (CN) 作为有机对应物。简单而通用的离子交换反应提供了由 HW 和 CN 组成的混合晶体 (CN-HW)。单晶 X 射线结构分析揭示了 CN-HW 混合晶体中具有特征的蜂窝状结构，由于 CN 的解离质子，这可能有助于出现导电性。
