聚丁二炔Langmuir-Blodgett薄膜的光声谱研究(Ⅱ)光谱综合分析和荧光量子效率  

Investigation of Photoacoustic Spectroscopy for Polydiacetylene Langmuir Blodgett Films(Ⅱ) Synthetical Analyse of the Spectra and Fluorescence Quantum Efficiency

作　　者：江月松[1,2] 

机构地区：[1]北京理工大学光电工程系 [2]东南大学毫米波国家重点实验室

出　　处：《光谱学与光谱分析》1999年第3期282-285,共4页Spectroscopy and Spectral Analysis

摘　　要：本文用光声谱（ｐｈｏｔｏａｃｏｕｓｔｉｃｓｐｅｃｔｒｏｓｃｏｐｙ，ＰＡＳ）结合光吸收谱、荧光光谱等对在工业上有潜在应用前景的聚丁二炔（ｐｏｌｙｄｉａｃｅｔｙｌｅｎｅ，ＰＤＡ）Ｌａｎｇｍｕｉｒ－Ｂｌｏｄｇｅｔ（ＬＢ）薄膜进行了研究。对经不同气体环境处理的ＰＤＡＬＢ膜的紫外－可见光声谱、光吸收谱和荧光光谱的综合分析表明，ＰＤＡＬＢ膜的激发态弛豫过程中激子和极化子形成的元激发性质。此外，还讨论了ＰＤＡＬＢ膜的荧光量子效率。本文的研究结果表明，用光声谱研究ＬＢ膜，可以获取仅用其他光谱得不到的信息。In this paper the polydiacetylene (PDA) Langmuir Blodgett (LB) films,which have potential applications in industry,are studied by using photoacoustic spectrum (PAS) combined with optical absorption and fluorescence spectra.The synthetical analysis of PAS and optical absorption and fluorescence spectra for PDA LB films that underwent environment with different kinds of gases shows that the information about relaxation process of excitation state and feature of elementary excitation can be achieved.Besides,fluorescence quantum efficiency was discussed.The achievment of this paper shows that the PAS technique is a valid means for studying LB films and can capture information which cannot be achieved by other optical spectroscopy.

关 键 词：聚丁二炔 LB膜 光声谱 荧光光谱 

分 类 号：O632.17[理学—高分子化学] TN204[理学—化学]