Creation of Chiral Thixotropic Gels through a Crown-Ammonium Interaction and their Application to a Memory-Erasing Recycle System
作者:Adam A. Sobczuk、Youichi Tsuchiya、Tomohiro Shiraki、Shun-ichi Tamaru、Seiji Shinkai
DOI:10.1002/chem.201103249
日期:2012.3.5
class of oligothiophene‐based organogelator bearing two crown ethers at both ends was synthesized. This compound could gelatinize several organic solvents, forming one‐dimensional fibrous aggregates. From the observation of circular dichroism, it was confirmed that the helical handedness of the fibrous assembly is controllable by the chirality of 1,2bisammonium guests, thus suggesting that one guest
合成了一类独特的基于低聚噻吩的有机胶凝剂,两端带有两个冠醚。该化合物可以使几种有机溶剂胶凝,形成一维纤维状聚集体。从圆形二向色性的观察中,可以确认,纤维状组件的螺旋旋性可通过1,2-双铵客体的手性来控制,因此表明一个客体分子通过冠-铵相互作用将两个胶凝剂分子桥接在一起。有趣的是,我们发现这种手性是通过热凝胶形成的,而通过触变性凝胶却消失了。新发现暗示本发明的有机凝胶系统可用作可逆的开关存储器件,其特征在于通过加热模式创建存储器并通过机械模式擦除存储器。