Diethylamino ethyl polymers and methods of use

A porous medium comprising (i) a porous support and (ii) a polymer or a salt thereof, wherein the polymer or a salt thereof comprises polymerized monomer (A), polymerized monomer (B), and polymerized monomer (C), wherein

• monomer (A) is of formula (I):
• monomer (B) is of formula (II):
• and
• monomer (C) is of formula (III):
• wherein
• R1A, R1B, and R1C are each independently hydrogen or methyl,
• R2 and R3 are each independently a C1-5 alkyl group, a C1-5 heteroalkyl group, or R2 and R3 are combined to form a 5- or 6-membered ring containing 3 to 5 carbon atoms,
• R4 and R5, are each independently hydrogen, a substituted or unsubstituted C1-8 alkyl group, C2-8 alkenyl group, C2-8 alkynyl group, C1-8 heteroalkyl group, C3-8 cycloalkyl group, C3-8 heterocycloalkyl group, aryl group, heteroaryl group, an alkaryl group, or an arylalkyl group,
• R6 is hydrogen, a substituted or unsubstituted C1-8 alkyl group, aryl group, heteroaryl group, an alkaryl group, or an arylalkyl group,
• m and n are each independently an integer from 1 to 4,
• wherein the polymer or a salt thereof is crosslinked with a crosslinking agent to form a network on the porous support.