A series of five new Ru(II) (η⁶-p-cymene) organometallic complexes with the incorporation of modified azobenzimidazole and anthraquinone based ligands were synthesized and found to be an excellent photoswitching property in different solvents. The push-pull effect affects the lifetime of the complexes during photoisomerization processes. Upon irradiation at 254 nm UV light, these complexes efficiently undergo the trans ↔ cis isomerization, which is dependant on solvent polarity as well as substituent pattern. In DCM (dichloromethane), two states stable isomers have been found, but in a higher polar solvent (CH₃CN), the fast conversion of trans isomer to the cis isomer takes place. However, the cis isomer proceeds slower thermal isomerization to its original trans isomer in dark condition at room temperature with a higher half-life of the complexes. The photoisomerization study has been monitored by using the UV–vis absorption and ¹H NMR studies, which indicates that the successful trans ↔ cis isomerization takes place. The coordination of the ruthenium ion successfully alters the electronic properties of ligands. The excellent photoswitching properties and higher half-life of these organometallic complexes are exciting candidates for their applications in catalytic, photonic devices, and medicinal purposes.

一系列五个新的Ru（II）（η ⁶ - p -cymene）具有修饰的azobenzimidazole和基于蒽醌的配体的结合的有机金属络合物的合成和发现是在不同溶剂中的优异的光控性能。推挽效应影响光致异构化过程中复合物的寿命。在254 nm紫外线下照射后，这些络合物有效地经历反式顺式异构化，这取决于溶剂的极性以及取代基的样式。在DCM（二氯甲烷）中，发现了两种状态的稳定异构体，但在极性更高的溶剂（CH ₃ CN）中，反式异构体快速转化为顺式异构体发生。然而，在室温下，在黑暗条件下，顺式异构体向其原始反式异构体的热异构化反应变慢，其半衰期更长。通过使用紫外可见吸收和¹ H NMR研究对光致异构化研究进行了监测，这表明成功进行了反式顺式异构化。钌离子的配位成功地改变了配体的电子性质。这些有机金属配合物的优异的光开关性能和较高的半衰期是其在催化，光子装置和医学用途中的令人兴奋的候选者。