Stabilization agents for silver nanowire based transparent conductive films
View Patent ↗Certain pyridine-ketone compounds have been found to provide anticorrosion properties when incorporated into silver nanowire containing films. Such compounds may be incorporated into one or more silver nanowire containing layers or in one or more layers disposed adjacent to the silver nanowire containing layers.
1. A transparent conductive article comprising:
a transparent support;
at least one first layer disposed on the transparent support, the at least one first layer comprising a network of silver nanowires dispersed within at least one polymer binder, and;
at least one second layer disposed adjacent to at least one first layer, the at least one second layer comprising at least one pyridine-ketone compound.
2. The transparent conductive article according to claim 1 , wherein the at least one second layer is disposed on the at least one first layer.
3. The transparent conductive article according to claim 1 , where in the at least one second layer is disposed between the transparent support and the at least one first layer.
4. The transparent conductive article according to claim 1 , wherein the at least one pyridine-ketone compound comprises:
a first unsaturated ring consisting of a first nitrogen atom, a first alpha carbon atom covalently bonded to the first nitrogen atom, a second alpha carbon atom covalently bonded to the first nitrogen atom, a first beta carbon atom covalently bonded to the first alpha carbon atom, a second beta carbon atom covalently bonded to the second alpha carbon atom, and a first gamma carbon atom covalently bonded to the first and second beta carbon atoms; and
a first carbonyl group comprising a first carbonyl carbon atom covalently bonded to the first alpha carbon atom, to a first oxygen atom, and to a first other carbon atom.
5. The transparent conductive article according to claim 4 , wherein the at least one pyridine-ketone compound further comprises a second carbonyl group comprising a second carbonyl carbon atom covalently bonded to the second alpha carbon atom, to a second oxygen atom, and to a second other carbon atom.
6. The transparent conductive article according to claim 1 , wherein the at least one pyridine-ketone compound comprises:
a first unsaturated ring consisting of a first nitrogen atom, a first alpha carbon atom covalently bonded to the first nitrogen atom, a second alpha carbon atom covalently bonded to the first nitrogen atom, a first beta carbon atom covalently bonded to the first alpha carbon atom, a second beta carbon atom covalently bonded to the second alpha carbon atom, and a first gamma carbon atom covalently bonded to the first and second beta carbon atoms;
a second unsaturated ring consisting of a second nitrogen atom, a third alpha carbon atom covalently bonded to the second nitrogen atom, a fourth alpha carbon atom covalently bonded to the second nitrogen atom, a third beta carbon atom covalently bonded to the third alpha carbon atom, a fourth beta carbon atom covalently bonded to the fourth alpha carbon atom, and a second gamma carbon atom covalently bonded to the third and fourth beta carbon atoms; and
a first carbonyl group comprising a second carbonyl carbon atom covalently bonded to the first alpha carbon, to a first oxygen atom, and to the third alpha carbon atom.
7. The transparent conductive article according to claim 6 , wherein the pyridine-ketone compound further comprises a second carbonyl group comprising a second carbonyl carbon covalently bonded to the second alpha carbon atom, to a second oxygen atom, and to a first other carbon atom.
8. The transparent conductive article according to claim 7 , wherein the pyridine-ketone compound further comprises a third carbonyl group comprising a third carbonyl carbon atom covalently bonded to the fourth alpha carbon atom, to a third oxygen atom, and to a second other carbon atom.
9. The transparent conductive article of claim 1 , wherein the at least one pyridine-ketone compound comprises at least one of 2,6-diacetylpyridine or di(2-pyridyl)ketone.
10. The transparent conductive article of claim 1 , having a transmittance of at least about 80% across entire spectrum range of from about 350 nm to about 1100 nm and a surface resistivity of 500 ohm/sq or less.
11. The transparent conductive article of claim 1 , wherein the at least one polymer binder comprises at least one water soluble polymer.
12. The transparent conductive article of claim 11 , wherein the at least one water soluble polymer comprises gelatin, polyvinyl alcohol, or mixtures thereof.
13. The transparent conductive article of claim 1 , wherein the at least one polymer binder comprises an organic solvent soluble polymer.
14. The transparent conductive article of claim 13 , wherein the organic solvent soluble polymer binder comprises at least one cellulose ester polymer.
15. The transparent conductive article of claim 13 , wherein the organic solvent soluble polymer binder comprises cellulose acetate, cellulose acetate butyrate, or cellulose acetate propionate, or mixtures thereof.
16. A transparent conductive article comprising:
a transparent support;
at least one first layer disposed on the transparent support, the at least one first layer comprising at least one pyridine-ketone compound and a network of silver nanowires and dispersed within at least one polymer binder.
17. A method comprising:
applying at least one first coating mixture onto a transparent support to form at least one first coated layer, the at least one first coating mixture comprising silver nanowires and at least one polymer binder; and,
applying at least one second coating mixture onto the at least one first coated layer to form at least one second coated layer, the at least one second coating mixture comprising at least one pyridine-ketone compound.