Naphthalene derivative, material for organic electroluminescence device, and organic electroluminescence device using the same

A naphthalene derivative represented by a formula (1):

• where:
• Ar1 and Ar2 each represent an aromatic hydrocarbon cyclic group having 6 to 18 carbon atoms forming a ring, the aromatic hydrocarbon cyclic group having none of anthracene skeleton, pyrene skeleton, aceanthrylene skeleton and naphthacene skeleton;
• Ar3 represents a benzene skeleton or a naphthalene skeleton;
• Ar1 to Ar3 are substituted or unsubstituted;
• Ar1 to Ar3 each are allowed to be bonded in any position of a main-chain benzene skeleton or a main-chain naphthalene skeleton;
• R1 and R2 each represent an alkyl group, a cycloalkyl group, an alkoxy group, a cyano group, a silyl group or a halogen atom, R1 and R2 each being allowed to be bonded in any position of the main-chain naphthalene or the main-chain benzene;
• a and b each represent an integer in a range of 0 to 4;
• a represents the number of substituent(s) R1 directly bonded to the main-chain naphthalene;
• b represents the number of substituent(s) R2 directly bonded to the main-chain benzene;
• R1 and R2 are allowed to be mutually the same or different;
• when a and b each independently are 2 or more, a plurality of R1 are allowed to be mutually the same or different, a plurality of R2 are allowed to be mutually the same or different, or the plurality of R1 are allowed to be the same as or different from the plurality of R2;
• m and n each represent an integer in a range of 1 to 4;
• when Ar3 represents a naphthalene skeleton, the structure represented by (—[Ar1]m—H) is not the same as the structure represented by (—[Ar2]n—H);
• when the naphthalene derivative has a structure in which two naphthalene skeletons are consecutively bonded together, the structure of the naphthalene derivative is represented by any one of formulae (1-A), (1-B), (1-C) and (1-D) as follows;
• the naphthalene skeletons represented by the formulae (1-A), (1-B) and (1-C) each are allowed to have a substituent(s) in any suitable position(s) or to be unsubstituted;
• R in the formula (1-D) represents a substituent, R representing a single substituent or plural substituents, the single substituent or the plural substituents being allowed to be in any position(s) of the two naphthalene skeletons, the plural substituents when R represents the plural substituents being allowed to be mutually the same or different;
• when the naphthalene derivative has a structure in which three naphthalene skeletons are consecutively bonded together, a naphthalene skeleton of the three naphthalene skeletons that is positioned at the center of the structure is tetravalent or more while at least either one of the other naphthalene skeletons of the three naphthalene skeletons that are positioned at ends of the structure is trivalent or more;
• when the naphthalene derivative has a structure in which four naphthalene skeletons are consecutively bonded together, at least one of the four naphthalene skeletons is tetravalent or more;
• when the naphthalene derivative contains a plurality of unsubstituted 9-phenanthrenes, the number of the unsubstituted 9-phenanthrenes is 3 or more;
• and
• when Ar1 or Ar2 represents a phenanthrene skeleton, the phenanthrene skeleton is monovalent phenanthrene.