Composition and method for forming electroactive polymer solution or coating comprising conjugated heteroaromatic polymer, electroactive polymer solution, capacitor and antistatic object comprising the electroactive coating, and solid electrolytic capacitor and method for fabricating the same

A composition for forming an electroactive coating, comprising:

• at least one compound of formula (2) as a monomer,
• wherein
• X is the same or different at each occurrence, and is independently selected from the group consisting of S, O, Se, Te, PR2 and NR2, wherein R2 is selected from the group consisting of hydrogen, and substituted and unsubstituted alkyl, aryl, heteroaryl, alkanoyl, and aryloy groups;
• Y is hydrogen (H), or a precursor of a good leaving group Y whose conjugate acid (HY) has a pKa of less than 30;
• Z is hydrogen (H), silyl, or a precursor of a good leaving group Z whose conjugate acid (HZ) has a pKa of less than 30;
• Ar is a substituted or unsubstituted, mono- or poly-nuclear, aryl or heteroaryl ring;
• m, o and p are each independently an integer equal to or greater than 0, with a proviso that m+p≧1;
• each k is independently 0, 1 or 2;
• each R5 is a substituent, wherein any two R5 on the same ring or on two neighboring rings, or R5 and a substituent group on a neighboring Ar ring, may join together to form another ring, and
• wherein the at least one compound of formula (2) comprises at least one compound of formula (2) with Z=H and Y≠H;
• an acid as a polymerization catalyst selected from the group consisting of a protic acid, a polymeric acid, and a non-transitional Lewis acid;
• at least one functional component selected from the group consisting of a solvent, a polymerization retardant, a polymer binder, a dopant, a dielectric layer protection agent, a plasticizer, an impact modifier, a crosslinking agent, a surfactant, and a dispersion stabilizer.