This review article presents an overview of the application of 1,2,3-triazoles in the design of various high performance organic coatings with properties like anti-corrosive, anti-microbial, self-healing, hybrid nanocomposite, bio degradable etc.

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This article reports a facile route for the synthesis of different generations of 1,2,3-triazole-rich hyperbranched polyether polyols using click chemistry and extends their application for the development of moisture-cured polyurethane–urea coatings. Initially, three generations of chlorinated hyperbranched polyether polyols were synthesized by ring-opening polymerization of epichlorohydrin with trimethylolpropane in different mole ratios. These chlorinated polyols on continuous treatments with sodium azide and propargyl alcohol result in three generations of 1,2,3-triazole-rich hyperbranched polyether polyols. Furthermore, these different generations of polyols were reacted with 1-iso­cyanato-4-[(4-iso­cyanato­cyclo­hexyl) methyl] cyclohexane (H12MDI) at OH:NCO ratio of 1:1.2 to obtain −NCO-terminated triazole-rich hyperbranched polyurethanes, which were subjected to curing under atmospheric moisture to obtain hyperbranched polyurethane–urea coatings. The coatings showed considerable enhancement in thermal stability, glass transition temperature, and corrosion resistance properties with an increase in generation number. All three generations of coating films show excellent resistance toward various bacterial and fungal attacks.

The surface of carbon nanotubes was modified with a hyperbranched polyol through click reaction for the development of functional polyurethane hybrid coatings.

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