Construction of Fluorescent Conjugated Polytriazole Containing Double-Decker Silsesquioxane: Click Polymerization and Thermal Stability

• DOI: 10.3390/polym15020331
• Publication Date: 2023-01-09T09:47:08Z
• Authors: Chia-Husan Chiang; Mohamed Gamal Moh...; Wei-Cheng Chen; Manivannan Madhu; Wei-Lung Tseng; Shiao-Wei Kuo
• Keywords: Thermogravimetric analysis; Thermal Stability; Silsesquioxane; Gel permeation chromatography

This study synthesized two azide-functionalized monomers through p-dichloro xylene and double-decker silsesquioxane (DDSQ) units with NaN3 to form DB-N3 DDSQ-N3 monomers, respectively. In addition, five different propargyl-functionalized were also prepared from hydroquinone, bisphenol A, bis(4-hydroxyphenyl)methanone, 2,4-dihydroxybenzaldehyde (then reacted hydrazine hydrate solution) 1,2-bis(4-hydroxyphenyl)-1,2-diphenylethene propargyl bromide P-B, P-BPA, P-CO, P-NP, P-TPE As a result, various DDSQ-based main chain copolymers could be using Cu(I)-catalyzed click polymerization of which the chemical structure molecular weight confirmed by Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), gel permeation chromatography (GPC) analyses. Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), electron microscope (SEM), transmission microscopy (TEM), photoluminescence (PL) analyses characterize thermal stability, morphology, optical behaviors these copolymers. All results indicate that incorporation an inorganic DDSQ cage improve stability such as decomposition temperature char yield, because dispersion homogeneously in copolymer matrix, this would then affect properties NP TPE work.