高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (S1): 41.

• 研究论文 • 上一篇    下一篇

Thermal Stability and Thermal Behavior of Nanoparticle a-Fe2O3-stearate Alternating Langmuir-BIodgett Multilayer

PENG Xiao-gang1, LI Lin-song1, ZHANG Yan1, BAI Yu-bai1, LI Tie-jin2   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023, P. R. C.;
    2. Department of Chemistry, Liaoning Normal University, Dalian, P. R. C
  • 收稿日期:1995-08-24 出版日期:1995-12-31 发布日期:1995-12-31
  • 基金资助:

    National Natural Science Foundation of China

Thermal Stability and Thermal Behavior of Nanoparticle a-Fe2O3-stearate Alternating Langmuir-BIodgett Multilayer

PENG Xiao-gang1, LI Lin-song1, ZHANG Yan1, BAI Yu-bai1, LI Tie-jin2   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023, P. R. C.;
    2. Department of Chemistry, Liaoning Normal University, Dalian, P. R. C
  • Received:1995-08-24 Online:1995-12-31 Published:1995-12-31
  • Supported by:

    National Natural Science Foundation of China

PDF (PC)

摘要：

Thermal stability and thermal behavior of nanoparticulate α-Fe2O3-stearate alternating Langmuir-Blodgett multilayer have been studied through temperature dependent FTIR spectroscopy. The results show that this multilayer has an excellent thermal stability. From 60℃ to 150℃,the alkyl chains in the multilayer can keep "all trans" configuration and the Fe2O3 nanopar-ticle multilayer film structure still remains an order structure. From 200℃ to 220℃, the film undergoes a phase transition from solid to liquid. Tins high melting point is due to the high molecular weight (at least 105 atomic weight units for one nanoparticle) and the stearate ions are chemically bonded to it.

关键词: Nanoparticle, LB films, IR spectrum

Abstract:

Thermal stability and thermal behavior of nanoparticulate α-Fe2O3-stearate alternating Langmuir-Blodgett multilayer have been studied through temperature dependent FTIR spectroscopy. The results show that this multilayer has an excellent thermal stability. From 60℃ to 150℃,the alkyl chains in the multilayer can keep "all trans" configuration and the Fe2O3 nanopar-ticle multilayer film structure still remains an order structure. From 200℃ to 220℃, the film undergoes a phase transition from solid to liquid. Tins high melting point is due to the high molecular weight (at least 105 atomic weight units for one nanoparticle) and the stearate ions are chemically bonded to it.

Key words: Nanoparticle, LB films, IR spectrum

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