Heat-Induced Morphological Transformation of Supramolecular Nanostructures by Retro-Diels-Alder Reaction
作者:Masato Ikeda、Rika Ochi、Yu-shi Kurita、Darrin J. Pochan、Itaru Hamachi
DOI:10.1002/chem.201201670
日期:2012.10.8
Controlling the morphology of supramolecular nanostructures in response to external stimuli is an important challenge in the development of functional soft materials. Here we show that a morphological transformation from 2D nanosheets to a network of 1D nanofibers is triggered by heating, which induces molecular conversion of a bolaamphiphile to a hydrogelator by means of a retro‐Diels–Alder reaction, thereby
响应外部刺激,控制超分子纳米结构的形态是功能性软材料开发中的一项重要挑战。在这里,我们显示了通过加热触发了从2D纳米片到1D纳米纤维网络的形态转变,它通过Diels-Alder逆反应诱导了两亲分子向水凝胶化剂的分子转化,从而产生了新的热定型超分子水凝胶。我们期望我们的设计将成为更复杂的超分子系统的起点,该系统将分子组装的热力学和化学反应动力学相结合,以创建复杂的超分子纳米结构。