Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (11): 1376-1379.doi: 10.3866/PKU.WHXB20041118

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Association of Polyoxyethylene n-octylphenol Ether with β-cyclodextrin

Du Xin-Zhen;Wang Ya-Rong;Lü Wei-Hua;Sun Yan-Chun;Teng Xiu-Lan;Hou Jing-Guo   

  1. Department of Chemistry, Northwest Normal University, Lanzhou 730070
  • Received:2004-04-22 Revised:2004-06-01 Published:2004-11-15
  • Contact: Du Xin-Zhen

Abstract: Association of polyoxyethylene n-octylphenol ether(OP) with β-cyclodextrin(β-CD) was investigated using OP as a fluorescent probe. The results show that the n-octyl with phenyl ring was entrapped into the cavity of β-CD. 1-bromo-naphthaline (BN) was further employed as a phosphorescent probe to monitor the binding site of OP and the spatial effect of OP on BN. The n-octyl chain of OP was located in the cavity of β-CD in a compressed manner. As a result, the binding strength of BN to the β-CD cavity occupied by OP decreases due to the geometric considerations.

Key words: β-cyclodextrin, Polyoxyethylene n-octylphenol ether, Nonionic surfactant, Fluorescence, Phosphorescence