Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (09): 1775-1778.doi: 10.3866/PKU.WHXB20090830

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Differences between Sodium Decylsulfate and Sodium Decanesulfonate when Interacting with Cationic Polyelectrolyte

WANG Chen, YAN Peng, XIAO Jin-Xin   

  1. Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China|Beijing FLUOBON Surfactant Institute, Beijing 100080, P. R. China
  • Received:2009-04-21 Revised:2009-05-16 Published:2009-09-03
  • Contact: XIAO Jin-Xin


Interactions between the cationic polyelectrolyte polydimethyldiallylammonium chloride (PDMDAAC) and sodium decylsulfate as well as sodium decanesulfonate were investigated by surface tension and pyrene fluorescence spectroscopy techniques. We found that although many properties of sodium decylsulfate and sodium decanesulfonate are similar, there are striking differences in their interactions with PDMDAAC. Sodium decylsulfate interacts with PDMDAAC more strongly than sodium decanesulfonate does. The experimental results in this work were explained by the data of the quantumchemical calculation.

Key words: Fluorescence probe, Decylsulfate, Decanesulfonate, Polydimethyldiallylammonium chloride


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