Thiacalix[4]arene 1,2,3-triazole-polyethylene glycol polymers: Synthesis and dye adsorption properties

By reacting alkynylthiacalix[4]arenes with polyethylene glycol azido compounds, a series of novel thiacalix[4]arene 1,2,3-triazole-polyethylene glycol netty polymers were conveniently prepared in good yields. Their structures and morphologies were studied by 1H NMR, IR, and elemental analysis and SEM images. On average, approximately 28–31 thiacalixarene units exist in each polymeric molecule. These novel polymers possess excellent adsorption ability for both cationic and anionic dyes. The saturation adsorption capacity for Congo red reached 1.3–1.4 mmol/g. They exhibit high and stable adsorption ability in the scope of pH 5–9, and maintain good properties in five cycles.

Graphical abstractA series of novel thiacalix[4]arene 1,2,3-triazole-polyethylene glycol polymers were synthesized and they exhibited excellent adsorption capability for organic dyes.Figure optionsDownload full-size imageDownload as PowerPoint slide