Optical filter

Abstract

An optical filter containing at least a clay mineral complex (A). The clay mineral complex (A) comprises a layered clay mineral (B) intercalated with a dye cation (C), and an organic cation (D).

1 - 11 . (canceled) 
   
   
       12 . An optical filter comprising at least a clay mineral complex (A), the clay mineral complex (A) comprising a layered clay mineral (B) intercalated with a dye cation (C) and an organic cation (D). 
   
   
       13 . The optical filter according to  claim 12 , further comprising a binder resin (E). 
   
   
       14 . The optical filter according to  claim 12 , wherein the layered clay mineral (B) is smectite. 
   
   
       15 . The optical filter according to  claim 12 , wherein the dye cation (C) is a cation of a cyanine compound represented by general formula (I): 
     
       
         
         
             
             
         
       
     
     wherein ring A is a group represented by structural formula (a), (b), or (d); ring B is a group represented by structural formula (b) or (c); and Q is a polymethine linking group, the polymethine chain of which may contain a ring structure and may have its hydrogen atom substituted with a halogen atom, a cyano group, a hydroxyl group, an alkyl group, an alkoxy group, or an aryl group, these groups may be further substituted, 
     
       
         
         
             
             
         
       
     
     wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 20 , R 21 , R 22 , and R 23  each represent a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a halogen atom, a nitro group, a cyano group, or a substituent represented by general formula (II) below; R 1  and R 2 , R 4  and R 5 , R 6  and R 7 , R 20  and R 21 , R 21  and R 22 , or R 22  and R 23  may be connected to each other to form a carbocyclic or heterocyclic ring having 3 to 12 carbon atoms; X 1  and X 2  each represent an oxygen atom, a sulfur atom, a selenium atom, —CR 8 R 9 —, —NH—, or —NY a —; R 8  and R 9  each represent a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a substituent represented by general formula (II) below, or a substituent represented by general formula (III) below; Y a , Y 1 , Y 2 , Y 3 , and Y 4  each represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, or a substituent represented by general formula (II) below, wherein the methylene moiety of the alkyl group may be substituted with —O— or —CO—. 
     
       
         
         
             
             
         
       
     
     wherein R a , R b , R c , R d , R e , R f , R g , R h , and R i  each represent a hydrogen atom, a hydroxyl group, or an alkyl group having 1 to 4 carbon atoms, wherein the alkylene moiety of which may be substituted with —O— or —CO—; Z represents a direct bond or a substituted or unsubstituted alkylene group having 1 to 8 carbon atoms, wherein the methylene moiety of which may be substituted with —O—, —S—, —CO—, —COO—, —OCO—, —SO 2 —, —NH—, —CONH—, —NHCO—, —N═CH—, or —CH═CH—; and M represents a metal atom. 
     
       
         
         
             
             
         
       
     
     wherein R 10 , R 11 , R 12 , and R 13  each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted alkoxy group having 1 to 4 carbon atoms; and R 10  and R 11  may be connected to each other to form a carbocyclic or heterocyclic ring having 3 to 12 carbon atoms. 
   
   
       16 . The optical filter according to  claim 15 , wherein the cation of the cyanine compound is represented by general formula (IV): 
     
       
         
         
             
             
         
       
     
     wherein Q, Y 1 , Y 3 , X 1 , and X 2  are as defined for general formula (I). 
   
   
       17 . The optical filter according to  claim 12 , wherein the dye cation (C) is a cation of a diimmonium compound represented by general formula (VI): 
     
       
         
         
             
             
         
       
     
     wherein R 31 , R 32 , R 33 , R 34 , R 35 , R 36 , R 37 , and R 38  each represent a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms; R 39 , R 40 , R 41 , and R 42  each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, or a substituted or unsubstituted amino group, wherein the methylene moiety of the alkyl group may be substituted with —O— or —CH═CH—; and n represents an integer of 1 to 4. 
   
   
       18 . The optical filter according to  claim 14 , wherein the smectite is lipophilic smectite. 
   
   
       19 . The optical filter according to  claim 13 , wherein the binder resin (E) is an acrylic pressure sensitive adhesive. 
   
   
       20 . The optical filter according to  claim 19 , wherein the optical filter has a pressure sensitive adhesive layer, and the clay mineral complex (A) and the acrylic pressure sensitive adhesive are present in the pressure sensitive adhesive layer. 
   
   
       21 . The optical filter according to  claim 12 , which is for application to an image display. 
   
   
       22 . The optical filter according to  claim 21 , wherein the image display is a plasma display. 
   
   
       23 . The optical filter according to  claim 13 , wherein the layered clay mineral (B) is smectite. 
   
   
       24 . The optical filter according to  claim 13 , wherein the dye cation (C) is a cation of a cyanine compound represented by general formula (I): 
     
       
         
         
             
             
         
       
     
     wherein ring A is a group represented by structural formula (a), (b), or (d); ring B is a group represented by structural formula (b) or (c); and Q is a polymethine linking group, the polymethine chain of which may contain a ring structure and may have its hydrogen atom substituted with a halogen atom, a cyano group, a hydroxyl group, an alkyl group, an alkoxy group, or an aryl group, these groups may be further substituted, 
     
       
         
         
             
             
         
       
     
     wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 20 , R 21 , R 22 , and R 23  each represent a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a halogen atom, a nitro group, a cyano group, or a substituent represented by general formula (II) below; R 1  and R 2 , R 4  and R 5 , R 6  and R 7 , R 20  and R 21 , R 21  and R 22 , or R 22  and R 23  may be connected to each other to form a carbocyclic or heterocyclic ring having 3 to 12 carbon atoms; X 1  and X 2  each represent an oxygen atom, a sulfur atom, a selenium atom, —CR 8 R 9 —, —NH—, or —NY a —; R 8  and R 9  each represent a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a substituent represented by general formula (II) below, or a substituent represented by general formula (III) below; Y a , Y 1 , Y 2 , Y 3 , and Y 4  each represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, or a substituent represented by general formula (II) below, wherein the methylene moiety of the alkyl group may be substituted with —O— or —CO—. 
     
       
         
         
             
             
         
       
     
     wherein R a , R b , R c , R d , R e , R f , R g , R h , and R i  each represent a hydrogen atom, a hydroxyl group, or an alkyl group having 1 to 4 carbon atoms, wherein the alkylene moiety of which may be substituted with —O— or —CO—; Z represents a direct bond or a substituted or unsubstituted alkylene group having 1 to 8 carbon atoms, wherein the methylene moiety of which may be substituted with —O—, —S—, —CO—, —COO—, —OCO—, —SO 2 —, —NH—, CONH—, —NHCO—, —N═CH—, or —CH═CH—; and M represents a metal atom. 
     
       
         
         
             
             
         
       
     
     wherein R 10 , R 11 , R 12 , and R 13  each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted alkoxy group having 1 to 4 carbon atoms; and R 10  and R 11  may be connected to each other to form a carbocyclic or heterocyclic ring having 3 to 12 carbon atoms. 
   
   
       25 . The optical filter according to  claim 14 , wherein the dye cation (C) is a cation of a cyanine compound represented by general formula (I): 
     
       
         
         
             
             
         
       
     
     wherein ring A is a group represented by structural formula (a), (b), or (d); ring B is a group represented by structural formula (b) or (c); and Q is a polymethine linking group, the polymethine chain of which may contain a ring structure and may have its hydrogen atom substituted with a halogen atom, a cyano group, a hydroxyl group, an alkyl group, an alkoxy group, or an aryl group, these groups may be further substituted, 
     
       
         
         
             
             
         
       
     
     wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 20 , R 21 , R 22 , and R 23  each represent a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a halogen atom, a nitro group, a cyano group, or a substituent represented by general formula (II) below; R 1  and R 2 , R 4  and R 5 , R 6  and R 7 , R 20  and R 21 , R 21  and R 22 , or R 22  and R 23  may be connected to each other to form a carbocyclic or heterocyclic ring having 3 to 12 carbon atoms; X 1  and X 2  each represent an oxygen atom, a sulfur atom, a selenium atom, —CR 8 R 9 —, —NH—, or —NY a —; R 8  and R 9  each represent a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a substituent represented by general formula (II) below, or a substituent represented by general formula (III) below; Y a , Y 1 , Y 2 , Y 3 , and Y 4  each represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, or a substituent represented by general formula (II) below, wherein the methylene moiety of the alkyl group may be substituted with —O— or —CO—. 
     
       
         
         
             
             
         
       
     
     wherein R a , R b , R c , R d , R e , R f , R g , R h , and R i  each represent a hydrogen atom, a hydroxyl group, or an alkyl group having 1 to 4 carbon atoms, wherein the alkylene moiety of which may be substituted with —O— or —CO—; Z represents a direct bond or a substituted or unsubstituted alkylene group having 1 to 8 carbon atoms, wherein the methylene moiety of which may be substituted with —O—, —S—, —CO—, —COO—, —OCO—, —SO 2 —, —NH—, —CONH—, —NHCO—, —N═CH—, or —CH═CH—; and M represents a metal atom. 
     
       
         
         
             
             
         
       
     
     wherein R 10 , R 11 , R 12 , and R 13  each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted alkoxy group having 1 to 4 carbon atoms; and R 10  and R 11  may be connected to each other to form a carbocyclic or heterocyclic ring having 3 to 12 carbon atoms. 
   
   
       26 . The optical filter according to  claim 13 , wherein the dye cation (C) is a cation of a diimmonium compound represented by general formula (VI): 
     
       
         
         
             
             
         
       
     
     wherein R 31 , R 32 , R 33 , R 34 , R 35 , R 36 , R 37 , and R 38  each represent a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms; R 39 , W 40 , R 41 , and R 42  each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, or a substituted or unsubstituted amino group, wherein the methylene moiety of the alkyl group may be substituted with —O— or —CH═CH—; and n represents an integer of 1 to 4. 
   
   
       27 . The optical filter according to  claim 14 , wherein the dye cation (C) is a cation of a diimmonium compound represented by general formula (VI): 
     
       
         
         
             
             
         
       
     
     wherein R 31 , R 32 , R 33 , R 34 , R 35 , R 36 , R 37 , and R 38  each represent a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms; R 39 , R 40 , R 41 , and R 42  each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, or a substituted or unsubstituted amino group, wherein the methylene moiety of the alkyl group may be substituted with —O— or —CH═CH—; and n represents an integer of 1 to 4. 
   
   
       28 . The optical filter according to  claim 13 , which is for application to an image display. 
   
   
       29 . The optical filter according to  claim 14 , which is for application to an image display. 
   
   
       30 . The optical filter according to  claim 15 , which is for application to an image display. 
   
   
       31 . The optical filter according to  claim 16 , which is for application to an image display.