聚丁二炔Langmuir—Blodgett薄膜的光声谱研究：（Ⅰ）结构表征与光声？…

本在用Ｘ－射线小角衍射聚合与转载先后次序不同的ＰＤＡ ＬＢ膜进行结构表征的基础上，不同厚度的ＰＤＡ ＬＢ膜的光声新斩波频率效应说明，随着ＰＤＡ ＬＢ膜厚度增加，ＬＢ膜的热学性质逐渐明显。此外，还探讨了如何从ＰＤＡ ＬＢ膜的光声谱求得光声吸收系数问题，本的研究结果表明，光声谱技术是研究ＬＢ膜热学特性的有效手段。

The investigation of photoacoustic spectroscopy for polydiacetylene Langmuir-Blodgett films. (I) Structure characterization and photoacoustic absorption coefficient spectra]

The polydiacetylene (PAD) Langmuir-Blodgett (LB) films, which have potential applications in industry, were studied by using X-ray low angle diffraction and photoacoustic chopping frequency effects and photoacoustic absorption coefficients obtained. The X-ray low angle diffraction of PDA LB films prepared by different sequence of polymerization/transferring shows that the two kinds of PDA LB films have different array structures. The chopping frequency effects of PDA LB films of different thickness are consistent with Roscenwaig-Gersho theory and show that the thermal property of PDA LB films gradually becomes obvious with the increase of thickness. A new method of acquiring photoacoustic absorption coefficient from photoacoustic spectroscopy was also developed. The achievement of this paper shows that the PAS technique is a valid means for studying LB films.