Studies on naphthalene and 1,2,3-triazole ring containing polyimides/zinc oxide nanocomposites

Abstract

A novel diamine containing naphthalene and 1,2,3-triazole was synthesized by click reaction in the presence of Cu (I) catalyst. The synthesized diamine reacts with commercially available dianhydride and zinc oxide (ZnO) to form polyimide (PI) nanocomposites by a conventional two-step method. The structure of the monomers and polymers was characterized by Fourier transform infrared and proton nuclear magnetic resonance spectra. The morphology of the PI and PI/ZnO nanocomposite films was investigated by scanning electron microscopy and X-ray diffraction analysis. Meanwhile, due to the presence of a naphthalene side group, PI and PI/ZnO nanocomposite films possess high thermal stability, with a glass transition temperature over 259°C and a decomposition temperature with 5% weight loss over 501°C under nitrogen atmosphere. Also, low moisture absorption (0.28%) and good optical transparency were evident. The hybrid films possessed good mechanical properties, with a tensile strength of 112–127 MPa, an elongation at break of 10–15%, and a tensile modulus of 2.8–3.2 GPa.

1,2,3‐Triazole rich polymers for flame retardant application: A review

“…Balasubramanian et al have synthesized 1,2,3-triazole containing polytriazoleimides (PTAIs) systems for FR application. 38,[96][97][98] Initially, aromatic diamine with 1,2,3-triazole moiety was prepared by CuAAC reaction between phenylenediazide, 1,4-bis [(4-azidophenyl) etherand4-aminophenyl propargyl ether (Figure 13). The diamines were polymerized with a variety of commercially available aromatic dianhydrides by polycondensation reaction.…”

“…Insertion of 1,2,3‐triazole moiety into polyimide systems has also been studied recently. Balasubramanian et al have synthesized 1,2,3‐triazole containing polytriazoleimides (PTAIs) systems for FR application 38,96–98 . Initially, aromatic diamine with 1,2,3‐triazole moiety was prepared by CuAAC reaction between phenylenediazide, 1,4‐bis[(4‐azidophenyl) etherand4‐aminophenyl propargyl ether (Figure 13).…”

Click chemistry inspired syntheses of new amide linked 1,2,3-triazoles from naphthols: biological evaluation and in silico computational study

“…4. Balasubramanian et al [33] synthesized naphthol derived bis-1,2,3-triazole derivative (A). Castillo et al [34] synthesized β-naphthol fused with 1,2,3-triazole derivatives (B), Nehra and coworkers reported [35] derivatives of α-naphthol fused with 1,2,3-triazole and benzthiazole heterocycle (C), Tai et al [36] synthesized β-naphthol fused with 1,2,3-triazole derivatives (D).…”