Synthesis and characterization of benzotriazole-functionalized 1,3,5-triazine-based luminescent high-performance polymers and their antibacterial efficacy

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A straightforward approach in fabricating novel thermally stable fluorescent polymeric materials by incorporating 1,3,5-triazine as a core moiety, coumarin as a fluorophore and 1,2,3-benzotriazole as a synthetic auxiliary resulting in the synthesis of 2-(1,2,3-benztriazolo)-4,6-bis-(7-hydroxy-coumarin-4-acetyl chloride)-s-triazine (4) as the key monomer. A range of aromatic and aliphatic diols were introduced by using cetrimide as the initiator under polar aprotic solvent to synthesize desired polyesters 5(a–j). Incorporation of bulky pendent group in (4) structure increases the thermal stability and solubility of the polyesters. The intrinsic, reduced and inherent viscosities were determined by using Huggins and Kraemer’s method. A detailed kinetic study based on the thermogravimetric analysis has been carried out and activation energy was calculated by using Broido, Horowitz and Metzger methods. Moreover, FTIR, 1H NMR, photoluminescent behavior and antibacterial efficacy have also been evaluated. This study contributes to the development of multifunctional polymeric materials with fluorescence, thermal stability and antibacterial capabilities, such as bioimaging, drug delivery and antimicrobial coatings for medical devices. The selection of these components is guided by their distinctive features and synergistic potential in the production of high-performance polymers.