Electroactive polymer, methods for the manufacture thereof, and use for electrochemical gas separation

A method of making an electroactive polymer, the method comprising:

• polymerizing an electroactive monomer of Formula (XIV)
• under conditions effective to provide an electroactive polymer comprising repeating units of Formula (I)
• wherein in the foregoing Formulas,
• X is —CH2— or —O—;
• L is an optional fused C4-6 cycloalkyl linking group or an optional fused benzene linking group;
• and
• EA is an electroactive species having
• an oxidized state, and
• at least one reduced state.

A method for separating a target gas from a fluid mixture comprising the target gas, the method comprising:

• contacting the fluid mixture with an electroactive polymer comprising repeating units according to Formula (I),
• wherein
• X is —CH2— or —O—;
• L is an optional fused C4-6 cycloalkyl linking group or an optional fused benzene linking group;
• and
• EA is an electroactive species having
• at least one oxidized state, and
• at least one reduced state;
• wherein the electroactive polymer is in a reduced state, to form an anion adduct between the target gas and the electroactive polymer in the reduced state to separate the target gas from the fluid mixture.