[Spectra studies on the interaction of Mn2+ and poly N-isopropylacrylamide].
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 Mn2+ -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 Mn2+ -PNIPAAm complex. Therefore the fluorescence intensity at 307 nm was increased by 314%.
Guo
Shao-fen
SF
School of Chemistry and Materials, Engineering, Southern Yangtze University, Wuxi 214036, China.
Chen
Ming-qing
MQ
Lu
Tian-hong
TH
Huang
Xiao-hua
XH
Akashi
Mitsuru
M