Diarylethene derivatives with hexaethylene glycol side chains were synthesized and their self-assembling and photochromic reactivity were investigated. The diarylethenes showed photochromism in organic solvents and even in water. The aqueous solution of the compounds turned turbid quickly upon heating. The clouding behavior was investigated using 1H NMR spectroscopy, dynamic light scattering, and absorption
合成了具有
六甘醇侧链的二芳基
乙烯衍
生物,并研究了它们的自组装和光致变色反应性。二
芳烃在有机溶剂甚至
水中显示出光致变色现象。化合物的
水溶液在加热后迅速变浑浊。使用1调查了混浊行为1 H NMR光谱,动态光散射和吸收光谱。发现在
水溶液中,化合物自组装成聚集体,并且通过升高温度使聚集体疏松。闭环异构体的浊点温度比开环异构体的浊点温度低5-7°C。当在两亲性侧链中引入不对称甲基时,在
水中用紫外线照射时会观察到诱导的圆二色性(ICD)。该ICD是通过开环和闭环异构体之间自组装行为的差异来解释的。建议闭环异构体组装成手性纳米结构。