Department of Chemistry, School of Basic and Applied Sciences, Central University of Tamil Nadu (CUTN), Thiruvarur 610 005, India.
Soft Matter. 2022 Dec 7;18(47):9017-9025. doi: 10.1039/d2sm01367c.
Phase-selective gelation of low molecular-weight photoresponsive organogelator possessing long aliphatic chain azobenzene sugar derivatives and its applications in the recycling of aromatic solvents and also the removal of cationic dyes is reported. Very low critical gelation concentration (CGC) in aromatic solvents implies that it acts as a very good gelator. The photoinduced gel-to-sol transition was attained by irradiation with UV light at 350 nm. These organogels work as a selective adsorbent for efficiently removing cationic dyes from individual aqueous dye solutions and in a mixture of cationic and anionic dye solutions show more than 95% removal within 12 h. These insights indicate that these sugar derivatives could be exploited in implementing smart materials for environmental remediation.
本文报道了一种低分子量光响应有机凝胶因子的相选择性凝胶化，该凝胶因子具有长脂肪链偶氮苯糖衍生物，并可应用于芳烃溶剂的回收和阳离子染料的去除。在芳烃溶剂中，非常低的临界凝胶浓度（CGC）表明其具有良好的凝胶性能。通过在 350nm 的紫外光照射下，可以实现光诱导凝胶-溶胶的转变。这些有机凝胶可以作为一种选择性吸附剂，从单一的水溶液中有效地去除阳离子染料，并且在阳离子和阴离子染料的混合物中，在 12 小时内可以去除超过 95%的染料。这些结果表明，这些糖衍生物可以用于开发环境修复用智能材料。
