Alkoxy substituted D-π-A dimethyl-4-pyrone derivatives: Aggregation induced emission enhancement, mechanochromic and solvatochromic properties
作者:YuQi Cao、Ye Xi、XinYu Teng、Yang Li、Xilong Yan、Ligong Chen
DOI:10.1016/j.dyepig.2016.09.063
日期:2017.2
Three series of D-π-A 2,6-dimethyl-4-pyrone-cored derivatives were designed and synthesized. Evaluation by spectroscopic methods indicated that all the compounds exhibited aggregation-induced emission enhancement (AIEE) effect and solvatochromism. The experimental results revealed that the restriction of intramolecular rotation is the key element for showcasing the AIEE phenomenon. Moreover, all of
设计并合成了三个系列的D-π-A2,6-二甲基-4-吡喃核衍生物。光谱法评价表明,所有化合物均表现出聚集诱导的发射增强(AIEE)作用和溶剂变色。实验结果表明,分子内旋转的限制是展示AIEE现象的关键因素。此外,所有化合物均表现出红移的机械变色行为,红移的程度主要取决于烷氧基的位置和长度。PXRD和DSC曲线显示了研磨后从晶态到非晶态的转变。这项工作中引入的DA策略可以促进巧妙的机械变色材料的开发和应用。