Abstract

An amphiphilic cholesteryl-derived diphenylalanine (Chol-FF) has been developed, which can emulsify the EDA/water (from 9-1 to 1-9, v/v) mixed solutions. External shaking or aging induced a transition of the Chol-FF EDA/water (9-1) system from emulsion to gel. Micron-sized fibers were observed in the gel system, and the formation was driven by the combination of intermolecular π-π stacking, hydrogen bonding, and van der Waals forces based on several spectroscopic studies. A lamellar packing mode was adopted by Chol-FF molecules in the gel. Moreover, the transition from emulsion to gel can be reversed by heating-cooling treatment due to the non-covalent driving nature.

摘要

已开发出一种两亲性胆固醇衍生的二苯丙氨酸 (Chol-FF)，它可以乳化 EDA/水（从 9-1 到 1-9，v/v）混合溶液。外部摇晃或老化导致 Chol-FF EDA/水 (9-1) 系统从乳液转变为凝胶。在凝胶系统中观察到微米尺寸的纤维，其形成是由分子间 π-π 堆积、氢键和基于几项光谱研究的范德华力共同驱动的。凝胶中的 Chol-FF 分子采用层状堆积方式。此外，由于非共价驱动性质，可以通过加热-冷却处理逆转从乳液到凝胶的转变。