aggregation-induced emission (AIE) active units and explore their optical properties and inherent mechanism. In this paper, two newly designed and synthesized difluoroboron β-diketonate complexes (TPE-BF2-2AP and TPE-BF2-2MP) with tetra (phenyl) ethylene (TPE) and N-alkyl pyrrole unit exhibit solvatochromism, AIE and mechanochromic properties. Although the alkyl substituents with slight difference, TPE-BF2-2AP
为聚集引发的猝灭发光剂提供聚集诱导发射(AIE)活性单元,并探讨其光学性质和内在机理是一个热门话题。本文研究了两种新设计和合成的具有四(苯基)
乙烯(TPE)和N-烷基
吡咯单元的二
氟硼酸β-二酮硼酸酯络合物(TPE-BF 2 -2AP和TPE-BF 2 -2MP)表现出溶剂变色,AIE和机械变色特性。尽管烷基取代基略有不同,但TPE-BF 2 -2AP相对于TPE-BF 2 -2MP在有机溶剂中显示出明显的斯托克斯位移增加和红移荧光发射。更有趣的是,单晶分析表明TPE-BF 2 -2MP形成了头对头的反平行堆叠,而TPE-BF 2 -2AP采用了稀缺的头对头交叉非平行堆叠,从而增强了量子与TPE-BF 2 -2MP相比,在研磨前/研磨后的效率从0.24降低到0.34,并且在聚集态和结晶态下蓝移荧光发射。另外,由于非晶态和结晶态之间的不完全转化,两种发光剂通过研磨,溶剂熏蒸和加热而表现出多态发射性质。