Germanium-centered dendrimer compound, and organic optoelectric element comprising same

A germanium-centered dendrimer compound having the following structure of Formula 1:

• wherein:
• R1, R2, R3 and R4 are each independently attached at the respective para position and represented by Formula 5:
• R5 is hydrogen,
• R6 is an aryl group having to 20 carbon atoms or a heteroaryl group having 2 to 20 carbon atoms,
• R7 is an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 20 carbon atoms or a heteroaryl group having 2 to 20 carbon atoms, and
• one or more hydrogens in R1 to R4 and R6 to R7 are each independently a compound substituted or not substituted with one or more substituents selected from the group consisting of an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, a heteroaryl group having 2 to 30 carbon atoms, a heterocyclic group having 3 to 30 carbon atoms, an acyl group having 1 to 30 carbon atoms, an acyloxy group having 6 to 30 carbon atoms, a dialkylamino group having 2 to 30 carbon atoms, a diarylamino group having 12 to 30 carbon atoms, an alkylarylamino group having 7 to 30 carbon atoms, a dialkylphosphino group having 2 to 30 carbon atoms, a diarylphosphino group having 12 to 30 carbon atoms, an alkylarylphosphino group having 7 to 30 carbon atoms, an amine group, a halogen group, a cyano group, a nitro group, a hydroxyl group and a carboxyl group.