Two novel phenanthroimidazole based luminogens were designed and synthesized through simple synthetic procedures. Two different hetero atoms containing (S, O) rings were introduced into the phenanthroimidazole moiety to obtain the efficient blue emitting luminogens. The optical, thermal, electronic, electrochemical and electroluminescence properties of both the derivatives have been thoroughly characterized. Both the synthesized compounds showed good thermal stability which is necessary for the LEC fabricating material. The photoluminescence quantum yields are good for both the compounds. The theoretical calculations done for electronic structure predictions are in good agreement with the experimental studies done by cyclic voltammetry. Moreover, the LEC devices fabricated show strong blue emission in 459 and 461 nm for devices 1 and 2 respectively. The CIE graph show good intensity for the devices 1 and 2 at (0.18,0.22) and (0.19,0.19) respectively. These CIE co-ordinates fall in the strong and intense blue emission region. Comparing the brightness, the compound 2 shows better brightness of 1289 than that of compound 1 of 1177 cd m⁻². The current density is also higher for the compound 2 which shows 342, when the compound 1 shows a current density of 166 mA cm⁻². Both the compounds show very good external quantum efficiency too.

设计并通过简单的合成程序合成了两种基于菲并咪唑的新型发光剂。将两个不同的含（S，O）杂原子的环引入菲并咪唑部分，以获得高效的发蓝光致发光剂。两种衍生物的光学，热，电子，电化学和电致发光性质已被彻底表征。两种合成的化合物均显示出良好的热稳定性，这是LEC制造材料所必需的。两种化合物的光致发光量子产率均良好。电子结构预测的理论计算与循环伏安法进行的实验研究非常吻合。此外，所制造的LEC器件分别对器件1和2发出459和461 nm的强烈蓝光。CIE图显示了设备1和2在（0.18,0.22）和（0.19,0.19）处的良好强度。这些CIE坐标位于强烈的蓝色发射区域。比较亮度，化合物2的亮度比化合物1的1177 cd m更好。⁻²。当化合物1的电流密度为166mA cm ^-2时，化合物342的电流密度也更高，为342 。两种化合物也显示出非常好的外部量子效率。