Table 1.

Representative post-polymerization reactions that can be used for the functionalization of polymers [42,44].

Classification	Reaction scheme	Refs.
Thiol-ene addition: The anti-Markovnikov addition of thiols to alkenes is facilitated by a radical source or by UV irradiation.		[45,46]
Thiol-disulfide exchange: This type of reaction is frequently found in biological systems. Disulfides as pyridyl disulfide are readily exchanged in high yields with thiol compounds.		[47,48]
Epoxides, anhydrides, isocyanates: These are a class of reactive groups, that are, importantly, tolerant toward radical-based polymerization methods.		[49,50,51]
Ketones and aldehydes: These can selectively react with primary amines, alkoxyamines, and hydrazines, producing imines, oximes, and hydrozones, respectively.		[52,53]
Active esters: The reaction of active ester groups with amines can proceeds selectively even in the presence of weaker nucleophiles, such as alcohols.		[54,55,56]
Diels–Alder cycloaddition: A diene and a substituted alkene can make cycloaddition reaction, which is reversible.		[57,58]
Michael addition: Thiols undergo Michael-type addition to activated alkenes, which proceeds rapidly in aqueous media under mild conditions.		[59,60,61]