Compositions useful for the formation of an antistatic layer or an electromagnetic radiation shield

A liquid composition comprising:

• i) particles comprising a complex of poly(3,4-ethylenedioxythiophene) and an anion of polystyrene sulfonic acid (PEDOT/PSS),
• ii) tetraethyl orthosilicate (TEOS),
• iii) water or a mixture of water and an alcohol selected from the group consisting of methanol, ethanol, n-propanol and isopropanol, and
• iv) a gallotannine, wherein the liquid comprises a dispersion,
• wherein the liquid further comprises
• v) at least one inorganic acid selected from the group consisting of sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, silicic acid and a mixture of at least two of these inorganic acids, or at least one organic acid selected from the group consisting of acetic acid, formic acid, benzoic acid, p-toluenesulfonic acid, PSS and a mixture of at least two of these organic acids, or a mixture of at least one of these inorganic acids and at least one of these organic acids, or the at least partially deprotonated base form of any of the above mentioned inorganic or organic acids, and
• wherein the pH of the liquid composition is in the range from 2.5 to 4, the pH being determined at a temperature of 25° C.