New polymer and polymer light-emitting device using the same

Abstract

Provided is a polymer comprising a repeating unit represented by formula (1), wherein, A 1 represents a divalent group in which the bond distance ratio (bond distance of C(α)-A 1 /bond distance of C(α)-C(β)) is 1.10 or more; R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 , each independently represent a hydrogen atom, alkyl group, alkyloxy group, aryloxy group, arylalkyloxy group, etc. The polymer is useful as a light-emitting material, a charge transporting material, etc.

1 . A polymer having a polystyrene reduced number average molecular weights of 10 3 -10 8 , and comprising a repeating unit represented by formula (I),  
       
         
           
           
               
               
           
         
         wherein, R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 , each independently represent a hydrogen atom, a halogen atom, an alkyl group, alkynyl group, alkynyl group, alkyloxy group, alkylthio group, an alkylamino group, aryl group, aryloxy group, arylthio group, arylemino group, arylalkyl group. arylalkyloxy group, aryl alkylthio group, arylalkylamino group, substituted silyl group, aryl group, aryloxy group, imino group, amide group, arylalkenyl group, arylalkynyl group, monovalent heterocyclic group, or cyano group;  
         R 2  and R 3  may be connected to form a ring;  
         R 4  and R 5  may be connected to form a ring;  
         A 1  is a divalent group represented by formula (6),  
         
           
             
             
                 
                 
             
           
         
         wherein, A 2  represents Si;  
         R 8  and R 9  each independently represent an alkyl group, alkyloxy group, alkylthio group, alkylamino group, aryl group, aryloxy group, arylthio group, arylamino group, arylalkyl group, arylalkyloxy group, arylalkylthio group, arylalkylamino group, acyloxy group, amide group, or monovalent heterocyclic group; and  
         l represents 1; and the polymer further comprises a repeating unit represented by formula (7) or formula (8),  
           —Ar 6 —(CR 17 ═CR 18 ) n—   (7)  
         wherein, Ar 6  represents an arylene group or a divalent heterocyclic group;  
         R 17  and R 18  each independently represent a hydrogen atom, an alkyl group, aryl group, monovalent heterocyclic group, or cyano group; and  
         n represents 0 or 1,  
         
           
             
             
                 
                 
             
           
         
         wherein, Ar 1  and Ar 2  each independently represent an arylene group or a divalent heterocyclic group;  
         R 11  represents a group represented by an alkyl group, aryl group, monovalent heterocyclic group, and a group represented by the below formula (9) or (10); and  
         m represents an integer of 1-4,  
         
           
             
             
                 
                 
             
           
         
         wherein, Ar 3  represents an arylene group or a divalent heterocyclic group;  
         R 12  represents a hydrogen atom, an alkyl group, aryl group, monovalent heterocyclic group, or a group represented by the below formula (10);  
         Y 1  represents —CR 13 ═CR 4 — or —C≡C—;  
         R 13  and R 14  each independently represent a hydrogen atom, an alkyl group, aryl group, monovalent heterocyclic group, or cyano group; and  
         p represents an integer of 0-2,  
         
           
             
             
                 
                 
             
           
         
         wherein, Ar 4  and Ar 5  each independently represents an arylene group or a divalent heterocyclic group;  
         R 15  represents an alkyl group, aryl group, or monovalent heterocyclic group;  
         R 16  represents a hydrogen atom, an alkyl group, aryl group, or monovalent heterocyclic group; and  
         q represents an integer of 1-4.  
       
     
     
         2 . A polymer according to  claim 1 , wherein R 2  and R 5  each independently represent an alkyloxy group, alkylthio group, alkylamino group, aryloxy group, arylthio group, arylamino group, arylalkyloxy group, arylalkylthio group, or arylalkylamino group.  
     
     
         3 . A polymer according to  claim 2 , wherein R 2  and R 5  each independently represent alkyloxy group, aryloxy group, or arylalkyloxy group.  
     
     
         4 . A process for producing a polymer according to  claim 1 , wherein a condensation polymerization is carried out using a compound represented by the below formula (II),  
       
         
           
           
               
               
           
         
         wherein, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and A 1  respectively represent the same groups as those in formula (I) of  claim 1;   
         x 1  and x 2  each independently represent a substituent capable of condensation polymerization.  
       
     
     
         5 . A compound represented by formula (II),  
       
         
           
           
               
               
           
         
         wherein, R 1 , R 2 , R 3 , R 4 , R 5 , and R 6  each independently represent a hydrogen atom, a halogen atom, an alkyl group, alkenyl group, alkynyl group, alkyloxy group, alkylthio group, an alkylamino group, aryl group, aryloxy group, arylthio group, arylamino group, arylalkyl group, arylalkyloxy group, aryl alkylthio group, arylalkylamino group, substituted silyl group, acyl group, acyloxy group, imino group, amide group, arylalkenyl group, arylalkynyl group, monovalent heterocyclic group, or cyano group;  
         R 2  and R 3  may be connected to form a ring;  
         R 4  and R 5  may be connected to form a ring;  
         A 1  is a divalent group represented by formula (6),  
         
           
             
             
                 
                 
             
           
         
         wherein, A 2  represents Si;  
         R 8  and R 9  each independently represent an alkyl group, alkyloxy group, alkylthio group, alkylamino group, aryl group, aryloxy group, arylthio group, arylamino group, arylalkyl group, arylalkyloxy group, arylalkylthio group, arylalkylamino group, acyloxy group, amide group, or monovalent heterocyclic group;  
         l represents 1; and  
         x 1  and x 2  each independently represent a substituent capable of condensation polymerization.  
       
     
     
         6 . A compound according to  claim 5 , wherein R 2  and R 5  each independently represent an alkyloxy group, alkylthio group, alkylamino group, aryloxy group, arylthio group, arylamino group, arylalkyloxy group, arylalkylthio group, or arylalkylamino group.  
     
     
         7 . A compound according to  claim 6 , wherein R 2  and R 5  each independently represent an alkyloxy group, aryloxy group, or arylalkyloxy group.  
     
     
         8 . A compound according to  claim 5 , wherein X 1  and X 2  each independently represent a halogen atom, alkyl sulfonate group, aryl sulfonate group, or arylalkyl sulfonate group.  
     
     
         9 . A compound according to  claim 5 , wherein X 1  and X 2  each independently represent a halogen atom.  
     
     
         10 . A process for producing a polymer according to  claim 4 , wherein X 1  and X 2  each independently represent a halogen atom, alkyl sulfonate group, aryl sulfonate group or arylalkyl sulfonate group and wherein the condensation polymerization is carried out using a palladium catalyst or a nickel catalyst.  
     
     
         11 . A process for producing a compound according to  claim 5 , wherein the compound represented by the below formula (19) is reacted with a halogenation reagent,  
       
         
           
           
               
               
           
         
         wherein, R 1 , R 2 , R 3 , R 4 , R 5 , and R 6  each independently represent a hydrogen atom, a halogen atom, an alkyl group, alkenyl group, alkynyl group, alkyloxy group, alkylthio group, an alkylamino group, aryl group, aryloxy group, arylthio group, arylamino group, arylalkyl group, arylalkyloxy group, aryl alkylthio group, arylalkylamino group, substituted silyl group, acyl group, acyloxy group, imino group, amide group, arylalkenyl group, arylalkynyl group, monovalent heterocyclic group, or cyano group;  
         R 2  and R 3  may be connected to form a ring; and  
         R 4  and R 5  may be connected to form a ring;  
         R 8 , and R 9  each independently represent an alkyl group, alkyloxy group, alkylthio group, alkylamiuo group, aryl group, aryloxy group, arylthio group, arylamino group, arylalkyl group, arylalkyloxy group, arylalkylthio group, arylalkylamino group, acyloxy group, amide group, or monovalent heterocyclic group; and  
         l represents 1 or 2.  
       
     
     
         12 . A process for producing a dibenzosilole derivative according to  claim 11 , wherein N—halogenocompound is used as the halogenation reagent.  
     
     
         13 . A dibenzosilole derivative represented by formula (19) as claimed in  claim 11 .  
     
     
         14 . A dibenzosilole derivative according to  claim 13 , wherein all of R 1 , R 3 , R 4 , and R 6  in the above formula (19) are hydrogen atoms.  
     
     
         15 . A polymer electronic device including a polymer according to  claim 1 .  
     
     
         16 . A polymeric fluorescent substance consisting of a polymer according to  claim 1 .  
     
     
         17 . A polymer light-emitting device having a light emitting layer between the electrodes consisting of an anode and a cathode, wherein said light-emitting layer contains the polymer according to  claim 1 .  
     
     
         18 . A flat light source comprising a polymer light-emitting device according to  claim 17 .  
     
     
         19 . A segment display apparatus comprising a polymer light-emitting device according to  claim 17 .  
     
     
         20 . A dot-matrix display apparatus comprising a polymer light-emitting device according to  claim 17 .  
     
     
         21 . A liquid crystal display comprising a polymer light-emitting device according to  claim 17  as a back light.