Two Ï-conjugated organoboron complexes 1 and 2 with highly efficient red (632 nm) and deep red (670 nm) solid-state fluorescence have been constructed and qualified as potential non-doped red emitters accompanied by excellent electron-transport ability. X-ray crystal analysis demonstrated that the two side phenyl groups coordinated to each boron atom effectively keep the luminescent units apart. As a result, these red fluorophores are brightly fluorescent in the solid state (fluorescence quantum yields: 0.30 for 1 and 0.41 for 2). In addition, these boron complexes possess good thermal stability and high electron-transport ability. Organic light-emitting diodes employing 1 or 2 as non-doped emitters with simple device configuration exhibit bright red and near-infared electroluminescence.
我们构建了两种具有高效红色(632 nm)和深红色(670 nm)固态荧光的Ï-共轭有机
硼配合物 1 和 2,它们是潜在的非掺杂红色发光体,同时具有出色的电子传输能力。X 射线晶体分析表明,与每个
硼原子配位的两个侧苯基有效地将发光单元分开。因此,这些红色荧光团在固态下具有明亮的荧光(荧光量子产率:1 为 0.30,2 为 0.41)。此外,这些
硼络合物还具有良好的热稳定性和较高的电子传输能力。采用 1 或 2 作为非掺杂发射体的有机发光二极管,器件结构简单,可发出明亮的红色和近荧光电致发光。