Packing directed beneficial role of 3-D rigid alicyclic arms on the templated molecular aggregation problem

摘要: Subtle changes in molecular structure have been used to alter the packing and optical properties of organic luminophores. Thus it is important study simple advantageous structural modification overcome limitations aggregation quenching fluorescence. Planar conjugated compounds are unlikely be OLED devices as they suffer with luminescence weakening due π–π cofacial stacking excimer formation solid state. To avoid such critical issues, doped device architecture for has widely adopted which actually complicates fabrication process. an approach delimiting these drawbacks using methodologies highly desirable cost effective fabrication. In this context, two 3-dimensional rigid arms introduced into a planar benzo[h]chromen-2-one core, suffers from caused quenching, peripheral substituents tune subsequently their properties. The resultant 1 2 tested non-doped application. Compound was found thermally stable decomposition temperature 344 °C. Single crystal XRD studies helped elucidate that voluminous ring capable eradicating co-facial by increasing intermolecular distance hence state could regenerated. This tuning between molecules mitigate close packed arrangement at level also provided bulk enhanced emission property. Electroluminescence pristine layer compound possible. enabling luminophores applications utilizing thin films structurally engineered presented.