Patent ID: 8900725

Claim:
A dendrimer comprising a core unit, a bridge unit, and a dendron unit, wherein the core unit comprises a trivalent or tetravalent functional group selected from the group consisting of a substituted or unsubstituted C 1 -C 50 aliphatic hydrocarbon, a substituted or unsubstituted C 6 -C 50 aromatic hydrocarbon, and a substituted or unsubstituted C 3 -C 50 hetero aromatic hydrocarbon, wherein the bridge unit comprises a divalent or trivalent functional group selected from the group consisting of a substituted or unsubstituted C 6 -C 50 aromatic hydrocarbon and a substituted or unsubstituted C 3 -C 50 hetero aromatic hydrocarbon, and wherein the dendron unit comprises a monovalent fluorene-based functional group represented by Formula 1 below: where Z is selected from the group consisting of a single bond, Ar 1 and Ar 2 are each independently selected from the group consisting of a single bond, a substituted or unsubstituted C 6 -C 50 aryl group, and a substituted or unsubstituted C 3 -C 50 heteroaryl group, X 1 and X 2 are each independently selected from the group consisting of nitrogen (N), boron (B), and phosphorus (P), and X′ is selected from the group consisting of oxygen (O), sulfur (S), SO 2 , and CH 2 , Y 1 , Y 2 , Y 3 , Y 4 , Y 5 , and Y 6 are each independently selected from the group consisting of a single bond, a substituted or unsubstituted C 1 -C 50 alkylene group, a substituted or unsubstituted C 2 -C 50 alkenylene group, a substituted or unsubstituted C 2 -C 50 alkynylene group, a substituted or unsubstituted C 3 -C 50 cycloalkylene group, a substituted or unsubstituted C 1 -C 50 alkoxylene group, a substituted or unsubstituted C 6 -C 50 arylene group, and a substituted or unsubstituted C 3 -C 50 heteroarylene group, R 1 , R 2 , R 3 , R 4 , R′ and R″ are each independently selected from the group consisting of a hydrogen atom, a deuterium, tritium, a halogen atom, a cyano group, an amino group, a nitro group, a hydroxyl group, a carboxyl group, a substituted or unsubstituted C 1 -C 50 alkyl group, a substituted or unsubstituted C 2 -C 50 alkenyl group, a substituted or unsubstituted C 2 -C 50 alkynyl group, a substituted or unsubstituted C 3 -C 50 cycloalkyl group, a substituted or unsubstituted C 1 -C 50 alkoxy group, a substituted or unsubstituted C 6 -C 50 aryl group, and a substituted or unsubstituted C 3 -C 50 heteroaryl group, and R′ and R″ are each independently selected from the group consisting of a hydrogen atom, deuterium, tritium, a halogen atom, a cyano group, an amino group, a nitro group, a hydroxyl group, a carboxyl group, a substituted or unsubstituted C 1 -C 50 alkyl group, a substituted or unsubstituted C 6 -C 50 aryl group, and a substituted or unsubstituted C 3 -C 50 heteroaryl group, wherein at least two adjacent groups of R 1 , R 2 , R 3 , R′, and R″ are linked to form a saturated or unsaturated ring, and * is a binding site between one selected from the group consisting of Ar 1 , Z and a fluorene group in Formula 1 and the bridge unit.