Organic electroluminescence device and electronic apparatus provided with the same

An organic electroluminescence device comprising:

• a cathode,
• an anode, and
• an emitting layer disposed between the cathode and the anode, wherein
• the emitting layer comprises a compound represented by the following formula (1) and a compound represented by the following formula (31):
• wherein in the formula (1),
• R1 to R8 are independently
• a hydrogen atom,
• a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms,
• —Si(R901)(R902)(R903),
• —O—(R904),
• —S—(R905),
• —N(R906)(R907),
• a halogen atom, a cyano group, a nitro group,
• a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or
• a substituted or unsubstituted monovalent heterocyclic group having 5 to 50 ring atoms;
• R901 to R907 are independently
• a hydrogen atom,
• a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms,
• a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or
• a substituted or unsubstituted monovalent heterocyclic group having 5 to 50 ring atoms;
• when two or more of R901 to R907 exist, two or more of R901 to R907 may be the same with or different from each other;
• at least one of R1 to R4 is a deuterium atom;
• two or more adjacent groups of R1 to R4 and two or more adjacent groups of R5 to R8 do not form a ring;
• L1 and L2 are independently
• a single bond,
• a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms, or
• a substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms;
• Ar is
• a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or
• a substituted or unsubstituted monovalent heterocyclic group having 5 to 50 ring atoms;
• one of R11 to R18 is a single bond bonding to L2;
• R11 to R18 which are not single bonds bonding to L2 are independently
• a hydrogen atom,
• a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms,
• —Si(R901)(R902)(R903),
• —O—(R904),
• —S—(R905),
• —N(R906)(R907),
• a halogen atom, a cyano group, a nitro group,
• a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or
• a substituted or unsubstituted monovalent heterocyclic group having 5 to 50 ring atoms;
• R901 to R907 are as defined in R1 to R8;
• and
• two or more adjacent groups of R11 to R18 do not form a ring;
• wherein in the formula (31),
• one or more pairs of two or more adjacent groups of R301 to R307 and R311 to R317 form a substituted or unsubstituted, saturated or unsaturated ring, or do not form a substituted or unsubstituted, saturated or unsaturated ring;
• R301 to R307 and R311 to R317 that do not form the substituted or unsubstituted, saturated or unsaturated ring are independently
• a hydrogen atom,
• a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms,
• —Si(R901)(R902)(R903),
• —O—(R904),
• —S—(R905),
• —N(R906)(R907),
• a halogen atom, a cyano group, a nitro group,
• a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or
• a substituted or unsubstituted monovalent heterocyclic group having 5 to 50 ring atoms;
• R321 and R322 are independently
• a hydrogen atom,
• a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms,
• —Si(R901)(R902)(R903),
• —O—(R904),
• —S—(R905),
• —N(R906)(R907),
• a halogen atom, a cyano group, a nitro group,
• a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or
• a substituted or unsubstituted monovalent heterocyclic group having 5 to 50 ring atoms;
• and
• R901 to R907 are as defined in the formula (1).