Self-Assembly of a Tripodal Triszwitterion Forms a pH-Switchable Hydrogel that Can Reversibly Encapsulate Hydrophobic Guests in Water
作者:Poulami Jana、Carsten Schmuck
DOI:10.1002/chem.201601122
日期:2017.1.5
in response to external stimuli is of current interest for various applications. Herein, we have developed the novel tripodal triszwitterion 1, derived from a C3‐symmetric benzene‐1,3,5‐tricarboxamide (BTA) core, which forms a thermo‐reversible and pH‐switchable transparent hydrogel through intermolecular self‐complementary zwitterionic interactions at a neutral pH value. The hierarchical supramolecular
超分子智能材料的发展,其响应外部刺激而呈现出物理化学结构的变化,目前在各种应用中引起了人们的兴趣。本文中,我们开发了一种新型的三脚架三两性离子1,其源自C 3对称的苯-1,3,5-三甲酰胺(BTA)核,它通过分子间的自互补两性离子形成了热可逆且可pH转换的透明水凝胶。在中性pH值下发生相互作用。通过显微镜(AFM,场发射扫描电子显微镜(FESEM)),粘度,动态光散射(DLS)和流变学研究,对分层的超分子自聚集进行了全面分析。此外,化合物1 能够将疏水性客体(例如染料尼罗红)包裹在pH值为6的水性介质中,这使其成为药物递送和控释的有趣候选对象。