Conductor, conductive composition and laminate
View Patent ↗The present invention relates to a conductor having a substrate and a conductive coating film laminated on the substrate, wherein, the surface resistance value of the conductive coating film is 5×10 10 Ω/□ or less, the Ra 1 of the conductive coating film is 0.7 nm or less, the Ra 2 value of the conductive coating film scanning probe microscopies 0.35 nm or less, and the conductive coating film is formed with a conductive composition containing a conductive polymer (A). In addition, the present invention relates to a conductive composition which contains a conductive polymer (A) and a surfactant (B), wherein the surfactant (B) contains a specific water-soluble polymer (C), and the content of a compound (D1) with an octanol-water partition coefficient (Log Pow) of 4 or more in the conductive composition is 0.001 mass % or less, relative to the total mass of the conductive composition.
1. A conductor, comprising:
a substrate; and
a conductive coating film laminated on the substrate,
wherein the conductive coating film has a surface resistance value of 5×10 10 Ω/□ or less,
the conductive coating film has a surface roughness (Ra 1 ) measured by a stylus profiler of 0.7 nm or less, and
a surface roughness (Ra 2 ) measured by a scanning probe microscope of 0.35 nm or less, and
the conductive coating film is formed by a process comprising drying a conductive composition comprising a conductive polymer (A) and a surfactant (B), wherein the surfactant (B) comprises a water-soluble polymer (C) having a nitrogen-comprising functional group and a terminal hydrophobic group and having a molecular weight ranging from 500 to 1500, and the surfactant (B) comprises a compound (D1) with an octanol-water partition coefficient (Log Pow) of 4 or more such that an amount of the compound (D1) in the conductive composition is 0.001 mass % or less, relative to the total mass of the conductive composition.
2. The conductor according to claim 1 , wherein the conductive polymer (A) has an acidic group.
3. The conductor according to claim 2 , wherein the acidic group is at least one selected from the group consisting of a sulfonic acid group and a carboxyl group.
4. The conductor according to claim 2 , wherein the acidic group is a sulfonic acid group.
5. The conductor according to claim 2 , wherein the acidic group is a carboxyl group.
6. The conductor according to claim 2 , wherein the acidic group is a sulfonic acid group and a carboxyl group.
7. The conductor according to claim 1 , wherein the conductive polymer (A) has a monomer unit represented by formula (1)
wherein R 1 to R 4 each independently represents a hydrogen atom, a straight-chain or branched-chain alkyl group having 1 to 24 carbon atoms, a straight-chain or branched-chain alkoxyl group having 1 to 24 carbon atoms, an acidic group, a hydroxyl group, a nitro group or a halogen atom, and
at least one of R 1 to R 4 represents an acidic group or salt thereof.
8. The conductor according to claim 7 , wherein the acidic group is a sulfonic acid group or a carboxyl group.