Organic compound with triazine and benzimidazole as core and application thereof in organic electroluminescent device

An organic electroluminescent device prepared by an organic compound with triazine and benzimidazole as a core, wherein a structure of the organic compound is represented by the following formula (1):

• and wherein, Ar1 is one selected from the group consisting of phenyl, naphthyl, biphenyl, terphenyl, anthryl, dibenzofuranyl, dibenzothiophenyl, 9,9-dimethylfluorenyl or 9-phenylcarbazolyl, substituted or unsubstituted by halogen atoms, protium atoms, deuterium atoms, tritium atoms, and linear or branched alkyl with 1 to 10 carbons;
• Ar2 is a single bond or one selected from the group consisting of phenyl, naphthyl, biphenyl, terphenyl, anthryl or pyridyl, substituted or unsubstituted by halogen atoms, protium atoms, deuterium atoms, tritium atoms, and linear or branched alkyl with 1 to 10 carbons;
• Ar3 is a single bond or one selected from the group consisting of phenyl, naphthyl, biphenyl, terphenyl, anthryl or pyridyl, substituted or unsubstituted by halogen atoms, protium atoms, deuterium atoms, tritium atoms, and linear or branched alkyl with 1 to 10 carbons;
• R1 is one selected from the group consisting of formula (2), formula (3) and formula (4);
• R2 is one selected from the group consisting of formula (2), formula (3) and formula (4);
• wherein formula (2), formula (3) and formula (4) are:
• and wherein, Ar4 is one selected from the group consisting of phenyl, naphthyl, biphenyl, terphenyl or pyridyl, substituted or unsubstituted by halogen atoms, and linear or branched alkyl with 1 to 10 carbons;
• Ar5 is one selected from the group consisting of phenyl, naphthyl, biphenyl, terphenyl or pyridyl, substituted or unsubstituted by halogen atoms, and linear or branched alkyl with 1 to 10 carbons;
• Ar6 is one selected from the group consisting of phenyl, naphthyl, biphenyl, terphenyl or pyridyl, substituted or unsubstituted by halogen atoms, and linear or branched alkyl with 1 to 10 carbons;
• Ar7 is one selected from the group consisting of phenyl, naphthyl, biphenyl, terphenyl or pyridyl, substituted or unsubstituted by halogen atoms, and linear or branched alkyl with 1 to 10 carbons.