title: [Spectra studies on the interaction of Mn2+ and poly N-isopropylacrylamide].
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 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%.
authors.affiliation: School of Chemistry and Materials, Engineering, Southern Yangtze University, Wuxi 214036, China.
authors.forename: Shao-fen
authors.initials: SF
authors.lastname: Guo
authors.forename: Ming-qing
authors.initials: MQ
authors.lastname: Chen
authors.forename: Tian-hong
authors.initials: TH
authors.lastname: Lu
authors.forename: Xiao-hua
authors.initials: XH
authors.lastname: Huang
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Akashi