A large band gap supramolecular polymer based on host–guest interactions was developed as the host material for phosphorescent organic light-emitting diodes. The dibenzo-24-crown-8, and dibenzylammonium salt functionalized fluorene-based large band gap compounds 1 and 2 were developed as the host and guest monomers, respectively. The resulting linear supramolecular polymer (SP) 3 was obtained from the self-organization of the host and guest monomers, which was validated by nuclear magnetic resonance, viscosity and differential scanning calorimetry studies. The SP 3 maintained the triplet energy level of the host monomer 1 and the guest monomer 2. The resulting device based on the supramolecular host material and a yellow-phosphorescent complex Ir(Flpy)3 achieved a maximum luminance efficiency of 18.2 cd A−1.
研究人员开发了一种基于主客体相互作用的大带隙超分子聚合物,作为
磷光有机发光二极管的主材料。二苯并-24-
冠醚-8 和二苄基
铵盐官能化
芴基大带隙化合物 1 和 2 分别作为主单体和客单体被开发出来。通过核磁共振、粘度和差示扫描量热法研究验证,主单体和客体单体的自组织得到了线性超分子聚合物(
SP)3。
SP 3 保持了主单体 1 和客体单体 2 的三重能级。基于超分子主材料和黄色
磷光复合物 Ir(Flpy)3 的装置达到了 18.2 cd A-1 的最大发光效率。