Benzofluoranthene derivative and organic electroluminescence element comprising same

Abstract

A benzofluoranthene derivative represented by the following formula (1): wherein at least one pair of “R 1 and R 2 ” and “R 3 and R 4 ” is bonded together to form a ring represented by the following formula (2):

1 - 17 . (canceled) 
     
     
         18 . A benzofluoranthene derivative represented by the following formula (1): 
       
         
           
           
               
               
           
         
       
       wherein B 1  to B 3  are independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aryl group having 5 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 5 to 50 carbon atoms, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a carboxy group, or a halogen atom;
 a is an integer of 0 to 4, 
 b and c are independently an integer of 0 to 5, 
 when a is 2 or more, B 1 s may be the same or different, and they may be bonded together to form a saturated or unsaturated ring, 
 when b is 2 or more, B 2 s may be the same or different, and they may be bonded together to form a saturated or unsaturated ring, 
 when c is 2 or more, B 3 s may be the same or different, and they may be bonded together to form a saturated or unsaturated ring, 
 Ar 2  and Ar 3  are independently a substituted or unsubstituted aryl group having 5 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring carbon atoms, 
 R 1  to R 4  are independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aryl group having 5 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 5 to 50 carbon atoms, a cyano group, a nitro group, a hydroxy group, a substituted or unsubstituted silyl group, a carboxy group, or a halogen atom; 
 at least one pair of “R 1  and R 2 ” and “R 3  and R 4 ” is bonded together to form a ring represented by the following formula (2), 
 when both “R 1  and R 2 ” and “R 3  and R 4 ” form a ring, the rings may be the same or different, 
 
       
         
           
           
               
               
           
         
       
       wherein A 1  to A 4  are independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aryl group having 5 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 5 to 50 carbon atoms, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a carboxy group, or a halogen atom;
 among A 1  to A 4 , adjacent groups may be bonded to form a saturated or unsaturated ring, and the ring may have a substituent, and 
 X 1  to X 4  are independently a carbon atom or a nitrogen atom, and when any one of X 1  to X 4  is a nitrogen atom, A 1  to A 4  which bond to the one of X 1  to X 4  do not exist. 
 
     
     
         19 . The benzofluoranthene derivative according to  claim 18 , wherein R 1  and R 2  are bonded together to form the ring represented by formula (2). 
     
     
         20 . The benzofluoranthene derivative according to  claim 18 , wherein R 1  and R 2 , and R 3  and R 4  independently form the ring represented by formula (2), and
 the ring which R 1  and R 2  form is different from the ring which R 3  and R 4  form.   
     
     
         21 . The benzofluoranthene derivative according to  claim 18 , wherein R 1  and R 2 , and R 3  and R 4  independently form the ring represented by formula (2), and
 the ring which R 1  and R 2  form is the same as the ring which R 3  and R 4  form.   
     
     
         22 . The benzofluoranthene derivative according to  claim 18 , wherein A 1  and A 2  are bonded together to form a saturated or unsaturated ring. 
     
     
         23 . The benzofluoranthene derivative according to  claim 18 , wherein A 1  and A 2 , and A 3  and A 4  are bonded together to form a saturated or unsaturated ring. 
     
     
         24 . The benzofluoranthene derivative according to  claim 18 , wherein A 2  and A 3  are bonded together to form a saturated or unsaturated ring. 
     
     
         25 . The benzofluoranthene derivative according to  claim 18 , wherein A 1  to A 4  are independently a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 10 carbon atoms. 
     
     
         26 . The benzofluoranthene derivative according to  claim 18 , wherein all of X 1  to X 4  are a carbon atom. 
     
     
         27 . The benzofluoranthene derivative according to  claim 18 , wherein one or two of X 1  to X 4  are a nitrogen atom. 
     
     
         28 . The benzofluoranthene derivative according to  claim 18 , wherein Ar 2  and Ar 3  are independently a phenyl group or a naphthyl group. 
     
     
         29 . The benzofluoranthene derivative according to  claim 18 , wherein B 1  to B 3  are independently a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 10 carbon atoms, and
 a, b and c are independently an integer of 1 or 2.   
     
     
         30 . A material for an organic electroluminescence device comprising the benzofluoranthene derivative according to  claim 18 . 
     
     
         31 . The material for an organic electroluminescence device according to  claim 30 , which is a doping material.