Phase-selective gelation of low molecular-weight photoresponsive organogelator possessing long aliphatic chain azobenzene sugar derivatives, and its applications in the recycling of aromatic solvents and also removal of cationic dyes, are...

Reaction of heterocyclic azides with sugar alkyne under copper catalyzed 1,3-dipolar cycloaddition reaction resulted in the formation of triazoles in 64-90 % of yield. Existence of βanomeric forms of sugar were identified from NMR spectral studies. The structures were confirmed by elemental analyses, spectrometry ( 1 H & 13 C NMR) analysis. Antioxidant activities of the synthesised sugar triazoles shows significant inhibition (89.2 %) at lower than 100 μg/mL.

A novel class of 4,6-O-butylidene/ethylidene/benzylidene β-d-glucopyranose gelator functionalized with photo-responsive azobenzene moieties were designed and synthesized and also characterized using different spectral techniques.

Cu(I)-catalyzed azide−alkyne 1,3-dipolar cycloaddition (CuAAC) — commonly known as the “click reaction” — serves as the most effective and highly reliable tool for facile construction of simple to complex designs at the molecular level. It relates to the formation of carbon heteroatomic systems by joining or clicking small molecular pieces together with the help of various organic reactions such as cycloaddition, conjugate addition, ring-opening, etc. Such dynamic strategy results in the generation of triazole and its derivatives from azides and alkynes with three nitrogen atoms in the five-membered aromatic azole ring that often form gel assembled structures having gelating properties. These scaffolds have led to prominent applications in designing advanced soft materials, 3D printing, ion sensing, drug delivery, photonics, separation, and purification. In this review, we mainly emphasize on the different mechanistic aspects of triazole formation which includes synthesis of sugar-based and non-sugar-based triazoles, and their gel applications reported in the literature for the past ten years, as well as the upcoming scope in different branches of applied sciences.