From Bola-amphiphiles to Supra-amphiphiles: The Transformation from Two-Dimensional Nanosheets into One-Dimensional Nanofibers with Tunable-Packing Fashion of n-Type Chromophores
作者:Kai Liu、Yuxing Yao、Chao Wang、Yu Liu、Zhibo Li、Xi Zhang
DOI:10.1002/chem.201200898
日期:2012.7.9
formation of the supra‐amphiphiles, the nanosheets transform into ultralong nanofibers with a close packing of naphthalene diimide. Notably, just by mixing the two building blocks of the supra‐amphiphiles in aqueous solution, a dimension‐controlled evolution of the nanostructures is formed that leads to a different packing fashion of the n‐type functional chromophores, which is facile and environmental
通过对超两亲物的合理设计,我们成功地证明,不仅可以自组装纳米结构的尺寸,而且可以在功能上调节功能性萘二酰亚胺(典型的n型发色团)的堆积方式。在水溶液中以非共价方式存在。萘二酰亚胺被掺入到两亲物中作为刚性核,而紫精衍生物被用作亲水性头部。保拉两亲分子自组装成二维纳米片,其中萘二酰亚胺采用“ J型”聚集体。紫精衍生物与8-羟基py-1,3,6-三磺酸三钠盐之间的水溶性超分子络合被用作形成超两亲物的驱动力。形成超两亲分子后,纳米片转变为紧密堆积的萘二酰亚胺的超长纳米纤维。值得注意的是,仅通过在水溶液中混合两个以上两亲分子的构建基块,就形成了纳米结构的尺寸受控的演化,从而导致n型功能性发色团的不同堆积方式,既简便又环保。