Understanding relationship between stacking modes and optical properties of organic charge transfer cocrystals involving anthracyl chalcones and TCNB
作者:Hao Sun、Arshad Khan、Rabia Usman、Mingliang Wang
DOI:10.1016/j.jphotochem.2018.11.019
日期:2019.2
5-tetracyanobenzene (TCNB) as electron acceptor. Crystal structure analysis demonstrates that two types of face-to-face patterns (D···A···D···A···D and DAD···DAD) were mainly formed via π···π interactions. X-ray diffraction, vibration spectroscopy, thermal behaviors, solid-state absorption spectroscopy and fluorescence properties were employed to assess the relations between their structures and performance
通过自组装过程获得了四个摩尔比不同的电荷转移(CT)共晶体,涉及3-(9-蒽基)-1-苯基-2-丙-1-酮(APPO),3-(9-蒽基) -1-(4-甲氧基苯基)-2-丙-1-酮(AMPO),3-(9蒽基)-1-(1-萘基)-2-丙-1-酮(ANPO)作为电子供体和1,2,4,5-四氰基苯(TCNB)作为电子受体。晶体结构分析表明,两种类型的面对面图案(D···A···D···A··D和DAD···DAD)主要是通过π··π相互作用形成的。利用X射线衍射,振动光谱,热行为,固态吸收光谱和荧光性质来评估其结构与性能之间的关系。值得注意的是,相对于原始供体,共晶体的荧光特性显示出明显的增加,这是由于供体和受体分子之间的电荷转移相互作用引起的。这些结果显然有助于更好地认识CT共晶体中的堆叠模式与光学性质之间的关系。