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. 2023 Mar 15;9(3):230. doi: 10.3390/gels9030230

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Click chemistry. (a) Diels-Alder reactions. (b) Strain-promoted azide-alkyne cycloaddition (SP-ACC). (c) Thiol-ene click chemistry. (d) Oxime reaction. (e) Thiol-Michael pseudo-click reaction. (f) Aldehyde-hydrazide pseudo-click.