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基于柱[5]芳烃聚合物水凝胶的制备及对百草枯的可视化检测
  • ISSN号:1000-3304
  • 期刊名称:《高分子学报》
  • 时间:0
  • 分类:O633[理学—高分子化学;理学—化学]
  • 作者机构:南京大学化学化工学院,南京210023
  • 相关基金:国家自然科学基金(基金号21302092,91227106,21472089)资助项目.
中文摘要:

合成了单功能化的柱[5]芳烃单烯体,然后将其与丙烯酰胺(AAM)、交联剂N,N-亚甲基双丙烯酰胺(MBA)和引发剂偶氮二异丁腈(AIBN)在70℃下反应12h后形成含有大环主体柱[5]芳烃的高分子聚合物,将此聚合物分别浸泡于DMSO、水中各1周,并每天更换新鲜的溶剂,最后通过此聚合物的红外光谱图证实成功制备了含有柱[5]芳烃的聚合物水凝胶.利用紫外吸收光谱测试表征了水凝胶对百草枯的吸收作用.将该水凝胶浸入浓度从小到大的百草枯溶液中,发现水凝胶颜色由浅黄色变为棕红色,这是由于水凝胶中的柱[5]芳烃与N,N-二甲基-4,4'-联吡啶客体分子之间主客体作用形成了含有准轮烷结构的超分子聚合物所致.

英文摘要:

A mono-functionalized pallar[5]arene was designed and synthesized. It was then mixed with AAM, MBA, and AIBN in DMSO. The mixture was stirred at 70℃ for 12 h to give a functionalized polymer of pillar[5]arene. The polymer was then immersed in DMSO and deionized water, respectively, and the polymeric hydrogel was successfully prepared. For the synthesis of the polymer hydrogels with expected morphology and mechanical property, the best molar ratio was found to be 1:9:0.054:0.25 for functionalized pallar[5]arene monomer:AAM:MBA:AIBN was, and the polymerization reaction was at 70 ℃ for 12 h after the mixture deoxygenized. While the above optimized polymeric hydrogel was immersed in paraquat aqueous solution, a supramolecular polymeric hydrogel was achieved due to the host-guest complexing of paraquat in aqueous soltuion with pillar[5]arene moiety in the hydrogel. And the strong host-guest interaction of pillar[5]arene with paraquat was attributed to charge-transfer interactions between the electron-rich and suitable size of cavities of the pillar[5]arene derivatives and the encircled electron-poor guests. It was found that, during the formaiton of the supramolecular polymeric hydrogel, the color of the hydrogel became deep brown from pale yellow with increasing concentration of paraquat, which provided a good method for the collection and visual detection of paraquat in the aqueous solution by naked eyes. Increasing temperature promoted the absorption of paraquat by the polymeric hydrogel as well. In addition, the detection of paraquat by such polymeric hydrogel was studied by UV-Vis spectroscopy and UV-Vis absorption showed that the concentration of paraquat in water was decreasing because of its absorption by the polymeric hydrogel. This new type of pillararene-based adsorbent materials is considered as a potential adsorbent for the removal of harmful substances from wastewaters.

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期刊信息
  • 《高分子学报》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国化学会 中国科学院化学研究所
  • 主编:张希
  • 地址:北京市海淀区中关村北一街2号
  • 邮编:100190
  • 邮箱:gfzxb@iccas.ac.cn
  • 电话:010-62588927
  • 国际标准刊号:ISSN:1000-3304
  • 国内统一刊号:ISSN:11-1857/O6
  • 邮发代号:2-498
  • 获奖情况:
  • 国家优秀期刊二等奖,中科院优秀期刊二等奖,中国科协优秀期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘(网络版),荷兰文摘与引文数据库,美国科学引文索引(扩展库),英国高分子图书馆,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:19174