1,2,4-triazole derivative, preparation method and application thereof and organic electroluminescent device

The embodiment of the invention provides a 1,2,4-triazole derivative, a preparation method and application thereof and an organic electroluminescent device, belonging to the technical field of organic electroluminescence. A blue-ray material having high luminescence efficiency can be obtained. The molecular structural general formula of the 1,2,4-triazole derivative is shown in the specification, wherein the A group represents C8-18 aromatic heterocyclyl and C9-15 condensed cycloaryl, fluorenyl or triarylamino. The invention can be used in an organic electroluminescent device.