Emissive monomeric metal complexes

Abstract

Monomeric metal complexes having improved luminescence properties are provided. In one embodiment, a monomeric metal complex is represented by the formula [PN]M(L) 2 . PN is an amidophosphine ligand, and M may be any metal capable of exhibiting luminescent properties, for example, a d 10 metal. L may be a tertiary phosphine. Alternatively, a second PN ligand or DPPE may take the place of both L ligands.

1 . A monomeric metal complex comprising a compound represented by Formula 1: 
     
       
         
         
             
             
         
       
       wherein:
 M is a d 10  metal; 
 each of R 1  and R 2  is a substituted or unsubstituted hydrocarbon substituent; 
 each of R 3  through R 11  is a substituted or unsubstituted hydrocarbon substituent; and 
 each of L 1  and L 2  is independently selected from the group consisting of substituents represented by PX 3 , wherein X is a hydrocarbon substituent. 
 
     
   
   
       2 . A monomeric metal complex according to  claim 1 , wherein M is selected from the group consisting of Cu, Ag and Zn. 
   
   
       3 . A monomeric metal complex according to  claim 1 , wherein M is Cu. 
   
   
       4 . A monomeric metal complex according to  claim 1 , wherein each of R 1  and R 2  is independently selected from the group consisting of substituted and unsubstituted alkyl groups, substituted and unsubstituted alkenyl groups, substituted and unsubstituted alkynyl groups, substituted and unsubstituted aryl groups, and substituted and unsubstituted heteroaryl groups. 
   
   
       5 . A monomeric metal complex according to  claim 4 , wherein R 1  and R 2  are both isopropyl groups. 
   
   
       6 . A monomeric metal complex according to  claim 4 , wherein R 1  and R 2  are both phenyl groups. 
   
   
       7 . A monomeric metal complex according to  claim 1 , wherein each of R 3  through R 11  is independently selected from the group consisting of hydrogen, halogens, hydroxyl groups, cyano groups, alkoxy groups, acyl groups, substituted and unsubstituted alkyl groups, substituted and unsubstituted alkenyl groups, substituted and unsubstituted alkynyl groups, substituted and unsubstituted aryl groups, and substituted and unsubstituted heteroaryl groups. 
   
   
       8 . A monomeric metal complex according to  claim 7 , wherein at least one of R 3  through R 11  is not hydrogen. 
   
   
       9 . A monomeric metal complex according to  claim 7 , wherein at least R 5  is not hydrogen. 
   
   
       10 . A monomeric metal complex according to  claim 1 , wherein one of R 3  through R 6  and one of R 7  through R 11  form a single bond. 
   
   
       11 . A monomeric metal complex according to  claim 10 , wherein R 6  and R 7  form the single bond to form a compound represented by Formula 3: 
     
       
         
         
             
             
         
       
     
   
   
       12 . A monomeric metal complex according to  claim 1 , wherein each of L 1  and L 2  is selected from the group consisting of P(CH 3 ) 3  and P(C 6 H 5 ) 3 . 
   
   
       13 . A monomeric metal complex according to  claim 1 , wherein L 1  and L 2  comprise a single amidophospine ligand to form a compound represented by Formula 6A: 
     
       
         
         
             
             
         
       
     
   
   
       14 . A monomeric metal complex according to  claim 1 , wherein L 1  and L 2  comprise a single 1,2-(diisopropylphosphino)ethane ligand to form a compound represented by Formula 6B: 
     
       
         
         
             
             
         
       
     
   
   
       15 . A monomeric metal complex comprising a compound represented by Formula 1: 
     
       
         
         
             
             
         
       
       wherein:
 M is selected from the group consisting of Cu, Ag and Zn; 
 each of R 1  and R 2  is selected from the group consisting of substituted and unsubstituted alkyl groups, substituted and unsubstituted alkenyl groups, substituted and unsubstituted alkynyl groups, substituted and unsubstituted aryl groups, and substituted and unsubstituted heteroaryl groups; 
 each of R 3  through R 11  is selected from the group consisting of hydrogen, halogens, hydroxyl groups, cyano groups, alkoxy groups, acyl groups, substituted and unsubstituted alkyl groups, substituted and unsubstituted alkenyl groups, substituted and unsubstituted alkynyl groups, substituted and unsubstituted aryl groups, and substituted and unsubstituted heteroaryl groups; and 
 each of L 1  and L 2  is independently selected from the group consisting of substituents represented by PX 3 , wherein X is selected from the group consisting of alkyl groups, alkenyl groups, alkynyl groups, aryl groups and heteroaryl groups. 
 
     
   
   
       16 . A monomeric metal complex according to  claim 15 , wherein at least R 5  is not hydrogen. 
   
   
       17 . A monomeric metal complex according to  claim 15 , wherein R 6  and R 7  form a single bond to form a compound represented by Formula 3: 
     
       
         
         
             
             
         
       
     
   
   
       18 . A monomeric metal complex according to  claim 15 , wherein L 1  and L 2  comprise a single amidophosphine ligand to form a compound represented by Formula 6A: 
     
       
         
         
             
             
         
       
     
   
   
       19 . A monomeric metal complex according to  claim 15 , wherein L 1  and L 2  comprise a single 1,2-(diisopropylphosphino)ethane ligand to form a compound represented by Formula 6B: 
     
       
         
         
             
             
         
       
     
   
   
       20 . A monomeric metal complex according to  claim 14 , wherein M is Cu.