title: Fluorescence property on solutions of zwitterionic surfactant tetradecylbetaine in the presence of macromolecules.
abstract: The fluorescence property of zwitterionic surfactant tetradecylbetaine (C14BE) solutions in the presence of polyvinylpyrrolidone (PVPk30 and PVPk90), or Xanthan (Xc) have been investigated by steady-state fluorescence probe. The intensity ratio of the first and third peaks (I1/I3) of the monomer and that of the excimer to monomer (Ie/Im), and the aggregation number of the aggregates have been monitored. The results showed that C14BE/PVP and C14BE/Xc interactions mostly occur at the micelle surface. The C14BE clusters or micelles are bound to macromolecule chains by electrostatic force for PVP and by hydrogen-bonding for Xc, respectively.
authors.affiliation: Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Shandong University, Jinan, PR China. ciclab@sdu.edu.cn
authors.forename: G Y
authors.initials: GY
authors.lastname: Xu
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.forename: Y L
authors.initials: YL
authors.lastname: Yang
authors.forename: X R
authors.initials: XR
authors.lastname: Huang
mesh_terms: D001622:Betaine / Q000031:analogs & derivatives* / Q000737:chemistry; D005453:Fluorescence; D011135:Polysaccharides, Bacterial / Q000737:chemistry*; D011205:Povidone / Q000031:analogs & derivatives / Q000737:chemistry; D012996:Solutions; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D011135:Polysaccharides, Bacterial; D012996:Solutions; D013501:Surface-Active Agents; C421547:tetradecylbetaine; D001622:Betaine; D011205:Povidone; C002563:xanthan gum