1,2,3-Triazolium macrocycles in supramolecular chemistry

Abstract

In this short review, we describe different pathways for synthesizing 1,2,3-triazolium macrocycles and focus on their application in different areas of supramolecular chemistry. The synthesis is mostly relying on the well-known "click reaction" (CuAAC) leading to 1,4-disubstituted 1,2,3-triazoles that then can be quaternized. Applications of triazolium macrocycles thus prepared include receptors for molecular recognition of anionic species, pH sensors, mechanically interlocked molecules, molecular machines, and molecular reactors.

Keywords: 1,2,3-triazolium macrocycles; anion recognition; catenane; chalcogen bonding; click reaction; hydrogen bonding; molecular reactor; pH sensor; rotaxane; supramolecular.