Polymers containing thermally dissociable and soluble groups and the use of such polymers as organic electroluminescent materials

Abstract

A polymer, a luminescent material, and the likes are provided, wherein a film can be formed by a wet film-forming method, the film formed has a high stability, and is capable of being laminated with other layers by a wet film-forming method or another method, which are less decrease in charge transportation efficiency or luminescent efficiency, and attain an excellent driving stability. The polymer has a thermally dissociable and soluble group.

1 - 12 . (canceled) 
     
     
         13 . A luminescent-layer material, comprising a low-molecular compound having a thermally dissociable and soluble group. 
     
     
         14 . The luminescent-layer material according to  claim 13 , wherein said luminescent-layer material comprises a partial structure represented by the following chemical formula (U1): 
       
         
           
           
               
               
           
         
         wherein 
         ring A 0  represents an aromatic ring, the aromatic ring may have one or more substituents, and the substituents may be bonded to each other directly or through a divalent linking group to form a ring, 
         S 1 , S 2 , R 1 , and R 6  each independently represent a hydrogen atom, a hydroxyl group, an alkyl group which may have a substituent, an aromatic hydrocarbon ring group which may have a substituent, an aromatic heterocyclic group which may have a substituent, an aralkyl group which may have a substituent, an alkoxy group which may have a substituent, an aryloxy group which may have a substituent, an acyl group which may have a substituent, an alkenyl group which may have a substituent, an alkynyl group which may have a substituent, an acyloxy group which may have a substituent, an arylamino group which may have a substituent, a heteroarylamino group which may have a substituent, or an acylamino group which may have a substituent, and 
         R 2  to R 5  each independently represent a hydrogen atom or an alkyl group which may have a substituent, 
         all of R 2  to R 5  are not a hydrogen atom simultaneously. 
       
     
     
         15 . The luminescent-layer material according to  claim 13 , wherein said luminescent-layer material comprises a partial structure represented by the following chemical formula (U2): 
       
         
           
           
               
               
           
         
         wherein 
         ring B 0  represents an aromatic ring, the aromatic ring may have one or more substituents, and the substituents may be bonded to each other directly or through a divalent linking group to form a ring, and 
         S 11  to S 14  and R 11  to R 16  each independently represent a hydrogen atom, a hydroxyl group, an alkyl group which may have a substituent, an aromatic hydrocarbon ring group which may have a substituent, an aromatic heterocyclic group which may have a substituent, an aralkyl group which may have a substituent, an alkoxy group which may have a substituent, an aryloxy group which may have a substituent, an acyl group which may have a substituent, an alkenyl group which may have a substituent, an alkynyl group which may have a substituent, an acyloxy group which may have a substituent, an arylamino group which may have a substituent, a heteroarylamino group which may have a substituent, or an acylamino group which may have a substituent. 
       
     
     
         16 . The luminescent-layer material according to  claim 14 , wherein the ring A 0 , which is an aromatic ring, is an aromatic hydrocarbon ring. 
     
     
         17 . A composition, comprising the luminescent-layer material according to  claim 13  and a solvent. 
     
     
         18 . An organic electroluminescence element comprising an anode, a cathode, and an organic layer disposed between the anode and the cathode, wherein, the organic electroluminescence element comprises a layer formed from the composition for organic electroluminescence element according to  claim 17  by a wet film-forming method. 
     
     
         19 . An organic EL display device, comprising the organic electroluminescence element according to  claim 18 . 
     
     
         20 . An organic EL lighting, comprising the organic electroluminescence element according to  claim 18 . 
     
     
         21 - 22 . (canceled) 
     
     
         23 . The luminescent-layer material according to  claim 15 , wherein the ring B 0 , which is an aromatic ring, is an aromatic hydrocarbon ring.