物理化学学报 >> 1992, Vol. 8 >> Issue (03): 394-397.doi: 10.3866/PKU.WHXB19920320

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10,12-双炔甘三酸镉盐LB膜的FT-IR光谱

汤大新; 董玺娟; 王卉; 白玉白; 李丽华; 李铁津   

  1. 吉林大学原子与分子物理研究所,长春 130023;吉林大学化学系
  • 收稿日期:1990-11-01 修回日期:1991-02-14 发布日期:1992-06-15
  • 通讯作者: 汤大新

Linear Dichroism Spectra of Langmuir-Blodgett Film of Cd Salt of 10,12-Tricosadiynoic Acid

Tang Da-Xin; Dong Xi-Juan; Wang Hui; Bai Yu-Bai; Li Li-Hua; Li Tie-Jin   

  1. Institute of Atomic and Molecular Physics Jilin University, Changchun 130023; Chemistry Department, Jilin University
  • Received:1990-11-01 Revised:1991-02-14 Published:1992-06-15
  • Contact: Tang Da-Xin

关键词: 10,12-双炔甘三酸镉盐, LB膜分子取向, 热稳定性

Abstract: The molecular orientation and thermal stability of the Langmuir-Blodgett film of Cd salt of 10, 12-tricosadiynoic acid was studied using linear dichroism FT-IR spectroscopy. It was found that orientation angles between the transition moments of major characteristic groups in the film and the substrate surface normal line N are different. A molecular configuration like that of folding chain was evaluated, the closer to the hydrophobic end the more small the orientation angle is, this satisfies structural stability of LB films. The experiments on thermal stabiliyt showed that the structural stability of the LB film mainly depends on the hydrocarbon chain. After heated the tilt of the hydrocarbon chain was most serious and was irreversible on cooling back to the original room temperature.

Key words: Langmuir-Blodgett film of Cd salt of 10,12-tricosadiynoic acid, Molecular orientation, FT-IR linear Dichroism spectra