Tetraazaporphyrin dye mixtures

Claim 2

A thin film optical medium comprising a mixture of tetraazaporphyrin dye constituents which exhibits light absorption over a spectrum range of about 660-850 nm, and which dye constituents have different structures respectively corresponding to the formula: ##STR6## where M is a coordinated silicon or metal containing group, and wherein in one dye constituent Z 1 , Z 2 , and Z 3 are each a benzo structure represented by the formula: ##STR7## and Z 4 is a naphthalo structure that is represented by the formula: ##STR8## in another dye constituent Z 1 and Z 2 are each a benzo structure as above, and Z 3 and Z 4 are each a naphthalo structure as above; in another dye constituent Z 1 and Z 3 are each a benzo structure as above and Z 2 and Z 4 are each a naphthalo structure as above; in another dye constituent Z 1 is a benzo structure as above, and Z 2 , Z 3 and Z 4 are each a naphthalo structure as above, X being hydrogen, halogen, or an aliphatic, alicyclic or aromatic substituent containing 1-12 carbon atoms, and m being an integer with a value of 1-2.

Claim 3

A thin film optical medium comprising a mixture of tetraazaporphyrin dye constituents which exhibits light absorption over a spectrum range of about 660-850 nm, and which dye constituents have different structures respectively corresponding to the formula: ##STR9## where M is a coordinated silicon or metal containing group, and wherein in one dye constituent Z 1 , Z 2 , and Z 3 are each a benzo structure represented by the formula: ##STR10## and Z 4 is an anthracene structure that is represented by the formula: ##STR11## in another dye constituent Z 1 and Z 2 are each a benzo structure as above, and Z 3 and Z 4 are each an anthracene structure as above; in another dye constituent Z 1 and Z 3 are each a benzo structure as above and Z 2 and Z 4 are each an anthracene structure as above; in another dye constituent Z 1 is a benzo structure as above, and Z 2 , Z 3 and Z 4 are each an anthracene structure as above, X being hydrogen, halogen, or an aliphatic, alicyclic or aromatic substituent containing 1-12 carbon atoms, and m being an integer with a value of 1-2.

Claim 4

A thin film optical medium comprising a mixture of tetraazaporphyrin dye constituents which exhibits light absorption over a spectrum range of about 660-850 nm, and which dye constituents have different structures respectively corresponding to the formula: ##STR9## where M is a coordinated silicon or metal containing group, and wherein in one dye constituent Z 1 , Z 2 , and Z 3 are each a benzo structure represented by the formula: ##STR10## and Z 4 is an anthracene structure that is represented by the formula: ##STR11## in another dye constituent Z 1 and Z 2 are each a benzo structure as above, and Z 3 and Z 4 are each an anthracene structure as above; in another dye constituent Z 1 and Z 3 are each a benzo structure as above and Z 2 and Z 4 are each an anthracene structure as above; in another dye constituent Z 1 is a benzo structure as above, and Z 2 , Z 3 and Z 4 are each an anthracene structure as above, X being hydrogen, halogen, or an aliphatic, alicyclic or aromatic substituent containing 1-12 carbon atoms, and m being an integer with a value of 1-2.

Claim 5

A thin film optical medium comprising a mixture of tetraazaporphyrin dye constituents which exhibits light absorption over a spectrum range of about 660-850 nm, and which dye constituents have different structures respectively corresponding to the formula: ##STR12## where M is a coordinated silicon or metal containing group, and wherein in one dye constituent Z 1 , Z 2 , and Z 3 are each an anthracene structure represented by the formula: ##STR13## and Z 4 is a naphthalo structure that is represented by the formula: ##STR14## in another dye constituent Z 1 and Z 2 are each an anthracene structure as above, and Z 3 and Z 4 are each a naphthalo structure as above; in another dye constituent Z 1 and Z 3 are each an anthracene structure as above and Z 2 and Z 4 are each a naphthalo structure as above; in another dye constituent Z 1 is an anthracene structure as above, and Z 2 , Z 3 and Z 4 are each a naphthalo structure as above, X being hydrogen, halogen, or an aliphatic, alicyclic or aromatic substituent containing 1-12 carbon atoms, and m being an integer with a value of 1-2.

Claim 6

A thin film optical medium comprising a mixture of tetraazaporphyrin dye constituents which exhibits light absorption over a spectrum range of about 660-850 nm, and which dye constituents have different structures respectively corresponding to the formula: ##STR12## where M is a coordinated silicon or metal containing group, and wherein in one dye constituent Z 1 , Z 2 , and Z 3 are each an anthracene structure represented by the formula: ##STR13## and Z 4 is a naphthalo structure that is represented by the formula: ##STR14## in another dye constituent Z 1 and Z 2 are each an anthracene structure as above, and Z 3 and Z 4 are each a naphthalo structure as above; in another dye constituent Z 1 and Z 3 are each an anthracene structure as above and Z 2 and Z 4 are each a naphthalo structure as above; in another dye constituent Z 1 is an anthracene structure as above, and Z 2 , Z 3 and Z 4 are each a naphthalo structure as above, X being hydrogen, halogen, or an aliphatic, alicyclic or aromatic substituent containing 1-12 carbon atoms, and m being an integer with a value of 1-2.

Claim 7

An optical medium in accordance with claim 1 which has an external field-induced noncentrosymmetric molecular orientation, and which exhibits second order nonlinear optical susceptibility X.sup.(2).

Claim 8

An optical medium in accordance with claim 2 which has an external field-induced noncentrosymmetric molecular orientation, and which exhibits second order nonlinear optical susceptibility X.sup.(2).

Claim 9

An optical medium in accordance with claim 3 which has an external field-induced noncentrosymmetric molecular orientation, and which exhibits second order nonlinear optical susceptibility X.sup.(2).