Self-assembled multilayer films containing 1,8,15,22-tetrakis (8-quinolineoxy-5-sulfonic acid)-phthalocyanine copper: Preparation, and third order nonlinear optical properties

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• 作者：Chunying He ; Jingze Fan ; Zhongguo Li ; Yachen Gao ; Zhimin Chen ; Yinglin Song ; Yiqun Wu ; Bin wang
• 关键词：Third-order optical nonlinearity ; Electronic self-assembly ; Phthalocyanine ; 4f Coherent imaging system ; Thin film
• 刊名：Optical Materials
• 出版年：February, 2014
• 年：2014
• 卷：36
• 期：4
• 页码：746-752
• 全文大小：1132 K

文摘

Composite film with alternating layers containing anionic 1,8,15,22-tetrakis (8-quinolineoxy-5-sulfonic acid)-phthalocyanine copper and cationic polydiallydimethylammonium chloride was fabricated by electrostatic self-assembled layer-by-layer (LBL) technique. The microstructure of the film was characterized by a series of techniques. The third-order nonlinear optical properties of the film were measured using 4f coherent imaging system with phase object (NIT-PO) with laser duration of 20 ps at the wavelength of 532 nm. The film exhibited excellent nonlinear absorption and self-focusing effect. The second-order molecular hyperpolarizability 纬 value of the film reaches as high as 1.54 脳 10^{鈭?/sup>29  esu.}