Fluorescence property on solutions of zwitterionic surfactant tetradecylbetaine in the presence of macromolecules.
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.
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Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Shandong University, Jinan, PR China. ciclab@sdu.edu.cn
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Yang
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Huang
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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*
D011135:Polysaccharides, Bacterial; D012996:Solutions; D013501:Surface-Active Agents; C421547:tetradecylbetaine; D001622:Betaine; D011205:Povidone; C002563:xanthan gum