Synthesis and Evaluation of Cellulose-Based, 1,2,3-Triazolium-Functionalized Polymerized Ionic Liquids: Thermal Transitions, Ionic Conductivities, and Morphological Properties

A series of 1,2,3-triazolium-functionalized cellulose derivatives were prepared using an azide–alkyne “click” cyclization strategy, followed by quaternization. As represents inexpensive and sustainable biomacromolecule, the ability to functionalize backbone with ionic liquid generate conductive materials is great interest. Here, three different counteranions ([Br], [OTf], [NTf2]) employed explore interplay between thermal, conductive, morphological properties a diverse set techniques including nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray scattering, dielectric relaxation (DRS). Functionalization native resulted in observation Tg, values which inversely related size counteranion. Morphological indicated that amorphous nature, showing clear nanophase separation dependent on type anion. By simply quaternizing 1,2,3-triazole ring produce corresponding moiety, conductivity material was increased ∼6 orders magnitude at higher temperatures as compared samples. Ionic observed have Arrhenius (linear) behavior enhanced up 4 upon exposure humidity. The results provided evidence suggest are anion basicity hydration.