作者:Yu Wang、Kanglei Liu、Pangkuan Chen、Xiaodong Yin、Tai Peng、Javed Iqbal、Nan Wang
DOI:10.1039/d2tc01999j
日期:——
switching between the open and closed structures based on the intramolecular B ← O bond plays a key role in their solution state fluorescence response to external stimuli, which can be further tuned by adjusting the electronic/steric properties of the substituents on the BR2/P(O)R2 unit. All these compounds exhibit remarkable mechanochromism. Furthermore, upon grinding, pressure-induced blue-shifted and
一系列基于氨基-三芳基硼烷的柔性路易斯对,具有 P(O)R 2 (R = 苯基、甲基苯基) 和 BR 2 (R = 2,4,6-三甲基苯基 (Mes), 2,6-二甲基-4-甲氧基苯基(Mes(OMe)) 被合成并充分表征。这些化合物对包括溶剂、温度和压力在内的多种外部刺激表现出不同的反应。详细研究表明,基于分子内 B ← O键在其溶液状态对外部刺激的荧光响应中起着关键作用,可以通过调整BR 2 /P(O)R 2上取代基的电子/空间特性来进一步调整单元。所有这些化合物都表现出显着的机械变色性。此外,在研磨时,分别观察到B2 / B3和B1 / B4的压力引起的蓝移和红移发射。这种固态发射变化对于B2-B4在暴露于几种常见溶剂的蒸气时是完全可逆的。