摘要
手性开关是指在外界刺激作用下分子的手性状态的改变,并且这种改变可以被检测,即称之为手性分子开关,其在分子识别,传感和信息存储多领域有着广阔的应用前景。本研究中将阳离子型手性凝胶因子PULG(如下图所示)与一类常见的具有光致异构的螺吡喃衍生物共混(长疏水链(SPC18)和没有尾链(SPC1)),获得了光致、酸致变色的凝胶。SPC18与PULG通过长链的疏水作用以及静电作用,发生高度有序的超分子组装,使手性成功传递到螺吡喃衍生物上。利用超分子凝胶的多重响应性,构建了双响应的超分子手性开关。
An amphiphilic spiropyran(SPC18) was mixed with PULG to form co-organogels and the chiral sense of the PULG organogels was successfully transferred to amphiphilic spiropyran chromophore via the entanglement of alkyl chains.Dual chiroptical switch was obtained from the SPC18/PULG organogels under photo-irradiation and pH variation.Based on the dual chiroptical switch trigged by photoirradiation and acid/base treatment,a logic circuit has been designed.
引文
[1]Liu,C.;Yang,D.;Jin,Q.;Zhang,L.*;Liu,M.*Adv.Mater.2016,28:1644.