| Mn2+对聚N-异丙基丙烯酰胺的性能影响 | |
| Effect of Mn2+ on Property of Poly N-isopropylacrylamide | |
| 摘要: 合成了聚N-异丙基丙烯酰胺(PNIPAM)与Mn2+的配合物，并用荧光光谱、UV-Vis、FTIR、XPS进行了初步表征。说明Mn2+与PNIPAM侧链羰基氧或亚氨基氮原子发生了配位作用。由于Mn2+的发射光谱与PNIPAM激发光谱部分重叠以及Mn2+位于561 nm的发射峰在Mn2+-PNIPAM体系发射光谱中消失，说明发生了较好的F?rster能量传递。因此，在307 nm紫外区荧光强度比PNIPAM增强了314%，使该配合物表现出较好的抑菌效果，而此时少量Mn2+对其低临界溶解温度(LCST)影响不大。 | |
| 关键词: 聚N-异丙基丙烯酰胺 Mn2+ 能量传递 低临界溶解温度 抑菌性 | |
| 基金项目: | |
| Abstract: The property changes due to the interaction of poly N-isopropylacrylamide (PNIPAM) with Mn2+ were studied using UV-Vis, FTIR, XPS and fluorescence spectroscopy techniques. The results indicated that Mn2+ could bind to carbonyl oxygen or nitrogen atom in PNIPAM and form Mn2+-PNIPAM complex. It was found that there was efficient F?rster energy transfer from Mn2+ to PNIPAM according to overlapping of the emission spectra of Mn2+ and the excitation spectra of PNIPAM as well as the disappearance of the emission peak of Mn2+ at 561 nm in Mn2+-PNIPAM complex. Therefore, the florescence intensity at 307 nm was increased by 314% and the antibacterial activity was presented in Mn2+-PNIPAM complex, while the lower critical solution temperature of PNIPAM was not changed. | |
| Keywords: poly N-isopropylacrylamide Mn2+ energy transfer lower critical solution temperature antibacterial activity | |
| 投稿时间：2004-09-20 修订日期：2005-01-10 | |
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| 郭绍芬,陈明清,陆天虹,周青,黄晓华.Mn2+对聚N-异丙基丙烯酰胺的性能影响[J].无机化学学报,2005,21(5):633-637. | |
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