高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (S1): 78.

• 研究论文 • 上一篇    下一篇

Crystallization of Ammonium Nitrate Under Organised Monolayers at Air-Aqueous Interface

BAI Yu-bai1, Munger.G2, Roger2, M Leblanc2   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023, P. R. China;
    2. Centre de recherche en photobiophsique, University du Quebec a Trois-Riveres, C. P. 500, Trois-Riveres, Quebec, G9A 5H7, Canada
  • 收稿日期:1995-09-01 出版日期:1995-12-31 发布日期:1995-12-31

Crystallization of Ammonium Nitrate Under Organised Monolayers at Air-Aqueous Interface

BAI Yu-bai1, Munger.G2, Roger2, M Leblanc2   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023, P. R. China;
    2. Centre de recherche en photobiophsique, University du Quebec a Trois-Riveres, C. P. 500, Trois-Riveres, Quebec, G9A 5H7, Canada
  • Received:1995-09-01 Online:1995-12-31 Published:1995-12-31

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摘要：

The crystallization of NH4NO3 under compressed Langmuir monolayers of carboxybe-taine(C22N3COO-),C22H15N(CH2)3(CH2)3COO--[C22N3COO-] and dioleoyl-L-a-lecithin(DOPC) was studied by means of π-A. ΔV-A and fluorescence microscopy (FM). The surface pressure, surface potential and molecular area of C22N3COO- were decreased on the NH4NO3 solution subphase. The surface pressure and molecular area of DOPC was increased. The surface potential of DOPC was decreased. We can directly observe the surface crystallization of NH4NO3 by FM. The results revaled that C22N3COO- monolayer was the promoter of NH4NO3 surface crystallization. In contrast,DOPC monolayer was the inhibitor of the surface crystallization of NH4NO3.

关键词: Surface crystallization, C22N3COO- and DOPC monolayers, Fluorescence, Microscopy

Abstract:

The crystallization of NH4NO3 under compressed Langmuir monolayers of carboxybe-taine(C22N3COO-),C22H15N(CH2)3(CH2)3COO--[C22N3COO-] and dioleoyl-L-a-lecithin(DOPC) was studied by means of π-A. ΔV-A and fluorescence microscopy (FM). The surface pressure, surface potential and molecular area of C22N3COO- were decreased on the NH4NO3 solution subphase. The surface pressure and molecular area of DOPC was increased. The surface potential of DOPC was decreased. We can directly observe the surface crystallization of NH4NO3 by FM. The results revaled that C22N3COO- monolayer was the promoter of NH4NO3 surface crystallization. In contrast,DOPC monolayer was the inhibitor of the surface crystallization of NH4NO3.

Key words: Surface crystallization, C22N3COO- and DOPC monolayers, Fluorescence, Microscopy

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