Table 1.

Examples of various polyampholytes.

Chemical Structure of Monomer Units	Name Acronym	Type of Polyampholyte	Refs
	4-vinylpyridine-co-acrylic acid, P(4VPy-co-AA)	Annealed	[12]
	N,N-dimethylaminoethylmethacrylate- co-methacrylic acid, P(DMAEM-co-MAA)	Annealed	[13]
	N-vinylimidazole-co-acryic acid, P(VI-co-AA)	Annealed	[14]
	N,N’-dimethyl-N,N’-diallylammonium chloride-co-acrylic acid, P(DMDAAC-co-AA)	Self-quenched *	[15]
	sodium styrene sulfonate-co-4-vinylpyridine, P(NaSS-co-4VPy)	Self-quenched *	[16]
	poly(1-methyl-4-vinylpyridinium chloride)-block-poly(methacrylic acid), P1M4VPCl-b-PMAA	Self-quenched *	[17,18]
	2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt-co-(3-acrylamidopropyl)trimethylammonium chloride, P(AMPSNa-co-APTAC)	Quenched	[19]
	2-methacryloyloxyethyltrimethylammonium-co-2-methacryloyloxyethanesulfonate, P(METMA-co-MES)	Quenched or zwitterionic	[20]
	Poly(carbobetaine), PCB	Annealed	[7]
	Poly(sulfobetaine), PSB	Quenched or zwitterionic	[7]
	Poly(phosphobetaine), PPB	Quenched or zwitterionic	[7]

* The term “self-quenched” for polyampholytes represents polyampholytes which possess permanently ionized charged groups (anionic or cationic) in the repeating units.