Provided is a dispersion liquid that enables formation of a transparent conductive film in which diffuse reflection of light by the surfaces of metal nanowires is prevented while maintaining good transparency, and in which yellow coloring is suppressed to provide the transparent conductive film with excellent external appearance. The dispersion liquid contains metal nanowires and a colored compound adsorbed onto the metal nanowires. A transmission b* value of a transparent conductive film formed from the dispersion liquid is no greater than 0.7.

A dye-exchanged zeolite marker wherein the zeolite is characterized by a pores size comprised between 4 and 12 and the dye is an organic cationic molecule, characterized by an amount of dye comprised between 0.05% wt and 1% wt with respect to the zeolite weight, optically active compositions comprising the same dispersed in a polymeric matrix and their use as a detectable marker.

A dye-exchanged zeolite marker wherein the zeolite is characterized by a pores size comprised between 4 and 12 and the dye is an organic cationic molecule, characterized by an amount of dye comprised between 0.05% wt and 1% wt with respect to the zeolite weight, optically active compositions comprising the same dispersed in a polymeric matrix and their use as a detectable marker.

The present disclosure concerns the design, formulations, preparations and optical properties of compounds of Formulas (I) and (VI):
(charged dye.sup.m+).sub.x.Math.(counterion.sup.n).sub.y.Math.(counterion receptor).sub.z(I) and
(charged dye.sup.m).sub.x.Math.(counterion.sup.n+).sub.y.Math.(counterion receptor).sub.z(VI). The charged dye.sup.m+ is a cationic dye, counterion.sup.n is an anion, and counterion receptor is a binding ligand for the counterion.sup.n, wherein m, n, x and y are integers greater than or equal to 1, and products of x.Math.n and m.Math.y are identical for formula (I). The charged dye.sup.m is a anionic dye, counterion.sup.n+ is a cation, and counterion receptor is a binding ligand for the counterion.sup.n+, wherein m, n, x and y are integers greater than or equal to 1, and products of x.Math.n and m.Math.y are identical for formula (VI).

The present disclosure concerns the design, formulations, preparations and optical properties of compounds of Formulas (I) and (VI):
(charged dye.sup.m+).sub.x.Math.(counterion.sup.n).sub.y.Math.(counterion receptor).sub.z(I) and
(charged dye.sup.m).sub.x.Math.(counterion.sup.n+).sub.y.Math.(counterion receptor).sub.z(VI). The charged dye.sup.m+ is a cationic dye, counterion.sup.n is an anion, and counterion receptor is a binding ligand for the counterion.sup.n, wherein m, n, x and y are integers greater than or equal to 1, and products of x.Math.n and m.Math.y are identical for formula (I). The charged dye.sup.m is a anionic dye, counterion.sup.n+ is a cation, and counterion receptor is a binding ligand for the counterion.sup.n+, wherein m, n, x and y are integers greater than or equal to 1, and products of x.Math.n and m.Math.y are identical for formula (VI).

A dye-exchanged zeolite marker wherein the zeolite is characterized by a pores size comprised between 4 and 12 and the dye is an organic cationic molecule, characterized by an amount of dye comprised between 0.05% wt and 1% wt with respect to the zeolite weight, optically active compositions comprising the same dispersed in a polymeric matrix and their use as a detectable marker.

A dye-exchanged zeolite marker wherein the zeolite is characterized by a pores size comprised between 4 and 12 and the dye is an organic cationic molecule, characterized by an amount of dye comprised between 0.05% wt and 1% wt with respect to the zeolite weight, optically active compositions comprising the same dispersed in a polymeric matrix and their use as a detectable marker.