Conductive wet coating composition and thin-film prepared therefrom

A conductive wet coating composition, comprising:

• a conductive nanoparticle selected from the group consisting of a metal oxide nanoparticle, a metal nanoparticle, a surface-substituted metal nanoparticle and a semiconductor nanoparticle;
• a molten salt represented by one of Formula 1 and Formula 2:
• where each of R1, R2, R3, R4, and R5 is independently a hydrogen atom, a halogen atom, a carboxyl group, an amino group, a nitro group, a cyano group, a hydroxyl group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C1-C20 silicon-containing group, a substituted or unsubstituted C1-C20 fluorine-containing group, a substituted or unsubstituted C2-C20 alkenyl group, a substituted or unsubstituted C2-C20 alkynyl group, a substituted or unsubstituted C1-C20 heteroalkyl group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C7-C30 arylalkyl group, a substituted or unsubstituted C5-C30 heteroaryl group, or a substituted or unsubstituted C3-C30 heteroarylalkyl group;
• and
• X− is halide, a borate-based anion, a phosphate-based anion, a phosphinate-based anion, an imide-based anion, a sulfonate-based anion, an acetate-based anion, a sulfate-based anion, a cyanate-based anion, a thiocyanate-based anion, a carbon-based anion, a complex-based anion, or ClO4−;
• and
• where X1, is a substituted or unsubstituted C1-C10 alkylene group, a substituted or unsubstituted C6-C30 arylene group, a substituted or unsubstituted C1-C20 heteroalkylene group, or a substituted or unsubstituted C4-C30 heteroarylene group;
• X2 is a sulfonate-based anion, a cyanate-based anion, a thiocyanate-based anion, or a carboxylate-based anion;
• each of R3, R4, R5 and R6 is independently a hydrogen atom, a halogen atom, a carboxyl group, an amino group, a nitro group, a cyano group, a hydroxyl group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C1-C20 silicon-containing group, a substituted or unsubstituted C1-C20 fluorine-containing group, a substituted or unsubstituted C2-C20 alkenyl group, a substituted or unsubstituted C2-C20 alkynyl group, a substituted or unsubstituted C1-C20 heteroalkyl group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C7-C30 arylalkyl group, a substituted or unsubstituted C5-C30 heteroaryl group, or a substituted or unsubstituted C3-C30 heteroarylalkyl group;
• and
• n is an integer in the range of 50 to 500;
• and
• a polymer binder comprising conductive resin and nonconductive resin.

A conductive wet coating composition, comprising:

• a conductive nanoparticle;
• a molten salt;
• a polymer binder;
• Al2O3;
• and
• a soluble titanium precursor comprising at least one selected from compounds represented by Formulas 4 through 7:
• Ti(OR)4 (4)
• where R is independently CH3CO—CH═CHCH2—, C2H5OCO—CH═CHCH2—, —CH2CH2—COO—NH4+, —COR′, —CO(C6H4)COOR″, or C1-C10 alkyl group, wherein R′ is a substituted or unsubstituted C1-C10 alkyl group;
• R″ is a substituted or unsubstituted C1-C10 alkyl group;
• where R is a substituted or unsubstituted C1-C10 alkyl group, and R′ is a substituted or unsubstituted C1-C10 alkyl group;
• where R is a substituted or unsubstituted C1-C10 alkyl group;
• and
• where R1 is a substituted or unsubstituted C1-C10 alkyl group.