Mn<SUP>2+</SUP>与聚N-异丙基丙烯酰胺相互作用的光谱研究

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摘要：合成了聚N-异丙基丙烯酰胺(PNIPAAm)与Mn²⁺的配合物，并用荧光光谱、紫外-可见光谱及FTIR进行了初步表征。光谱数据说明Mn²⁺与PNIPAAm羰基氧发生了配位键合作用。由于Mn²⁺的发射光谱与PNIPAAm激发光谱部分重叠及Mn²⁺位于561 nm的发射峰在Mn²⁺-PNIPAAm体系发射光谱中消失，说明发生了较好的Frster能量传递。Mn²⁺-PNIPAAm配合物体系在307 nm紫外区荧光强度比PNIPAAm增强了314%。

关键词：Mn²⁺;聚N-异丙基丙烯酰胺;能量传递;光谱重叠

Abstract：The interaction of Mn²⁺ and poly (N-isopropylacrylamide) (PNIPAAm) was studied by using UV-Vis, FTIR and fluorescence spectroscopic methods. The results indicated that Mn²⁺ could be bonded to oxygen atoms of carbonyl in PNIPAAm and form the complex of Mn^2＋-PNIPAAm. It was found that there existed efficient Förster energy transfer from Mn²⁺ to PNIPAAm due to the emission spectra of Mn²⁺ overlapping the excitation spectra of PNIPAAm and that the emission peak of Mn²⁺ at 561 nm disappeared in Mn^2＋-PNIPAAm complex. Therefore the fluorescence intensity at 307 nm was increased by 314%.

Key words：Mn²⁺;Poly (N-isopropylacrylamide);Energy transfer;Spectra overlapping

收稿日期: 2004-06-06 修订日期: 2004-08-26

中图分类号:

O614

通讯作者: 黄晓华

引用本文:

郭绍芬¹，陈明清¹，陆天虹^{2, 3}，黄晓华^{1, 2*}，Mitsuru Akashi⁴ . Mn²⁺与聚N-异丙基丙烯酰胺相互作用的光谱研究[J]. 光谱学与光谱分析, 2005, 25(10): 1591-1594.
GUO Shao-fen¹, CHEN Ming-qing¹, LU Tian-hong^2,3, HUANG Xiao-hua^1,2*, Mitsuru Akashi⁴ . Spectra Studies on the Interaction of Mn²⁺ and Poly N-Isopropylacrylamide. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(10): 1591-1594.

链接本文:

https://www.gpxygpfx.com/CN/Y2005/V25/I10/1591

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