Synthesis of Novel Photorefractive Polymers and Their Application to Image Processing

新型光折变聚合物的合成及其在图像处理中的应用

• 批准号: 13450393
• 负责人: SASABE Hiroyuki
• 金额: $ 9.41万
• 依托单位: Chitose Institute of Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450393/
• 关键词: monolithic photorefractive material; acceptor substituted carbazole; orientational relaxation; wave front reconstruction; angle multiplexed hologram; associative optical memory; carbazole substituted polyacetylene; carrier mobility; アクセプター置換カンバゾール

We have developed monolithic photorefractive polymers with acceptor-substituted carbazole (a-Cz) units which have both photoconductive and electro-optic properties. Among them the polymer containing a-Cz unit with a second order nonlinear optical chromophore pendant group in the main chain showed highest efficiency and stability of photorefractivity. The relaxation processes of poling and depoling of this polymer were discussed by means of electro-optical response and thermally stimulated current measurements. The results suggest that the refractive index change occurs not due to dipole orientation but due to electro-optical effect and that the orientational stability contributes to the stability of photorefractive property.We have demonstrated the image processing using monolithic carbazole trimers. From a wave-front reformation by the photorefractive film as a phase conjugation mirror the original image was reconstructed from the distorted image. In the holographic recording under the degenerated four wave mixing configuration we succeeded in the angle multiplexed hologram using strong incident angle dependence of diffraction efficiency and demonstrated the recording and reproducing the images. In addition the partial image introduced into this hologram reproduced the original image, which is called an associative memory.For the enhancement of response time (faster response) it is effective to fasten the space charge movement in the material. We have developed a highly conjugated polyacetylene with carbazole pendant CzPA for this purpose. The device structure of ITO/CzPA/TiOPh/Au showed an enhanced mobility of CzPA as ca. 10^<-4> cm^2/Vs which is 2 orders of magnitude larger than that of polyvinylcarbazole (PVK), ca. 10^<-6> cm^2/Vs. It is also clarified that CzPA is a bipolar carrier transport material and that the electron and hole mobilities are almost the same each other.

我们已经开发了具有受体取代的甲Bazole（A-CZ）单元的单片光致热聚合物，这些聚合物具有光导型和电磁特性。其中，主链中含有二阶非线性光发色团吊坠的聚合物具有最高的效率和稳定性。通过电流响应和热刺激的电流测量值讨论了该聚合物的凝血和解溶剂的松弛过程。结果表明，折射率的变化不是由于偶极取向，而是由于电流效应而引起的，并且定向稳定性有助于光赋予性能的稳定性。我们已经证明了使用单层卡唑培训器证明了图像处理。从光赋膜作为相结合镜面的波前改革中，原始图像是从扭曲的图像中重建的。在退化的四波混合配置下的全息记录中，我们使用衍射效率的强入射角依赖性在角度多路全息图中取得了成功，并证明了记录和复制图像。另外，引入该全息图的部分图像再现了原始图像，该图像称为关联内存。对于增强响应时间（更快的响应），固定材料中的空间电荷运动是有效的。为此，我们已经与甲壳虫吊坠CZPA开发了高度共轭的聚乙炔。 ITO/CZPA/Tioph/au的设备结构显示出CA的czpa的迁移率增强。 10^<-4> cm^2/vs，比聚乙烯基碳唑（PVK）大2个数量级。 10^<-6> cm^2/vs。还可以澄清的是，CZPA是一种双极载体运输材料，电子和孔迁移率几乎相同。

项目成果

S. Noro et al.: "New Microporous Coordination Polymer Affording Guest-coordination Sites at Channel Wall"Chem. Comm.. 2002. 222-223 (2002)

S. Noro 等人：“新型微孔配位聚合物在通道壁上提供客体配位位点”Chem。

H. Kimura-Suda et al.: "Simultaneous Determination of Average Direction of Molecular Orientation and Effective Second Order Nonlinear Optical Constant (|d^<eff>|) by Phase Measurements of Second Harmonic Generation"J. Phys. Chem. B. 105(9). 1763-1769 (200

H. Kimura-Suda 等人：“通过二次谐波产生的相位测量同时测定分子取向的平均方向和有效二阶非线性光学常数 (|d^<eff>|)”J。

T. Aoyama et al.: "Multiplexed Holography with Monolithic Photorefractive Trimer"IEICE Trans. Electron. E85-C. 1282-1286 (2002)

T. Aoyama 等人：“采用单片光折射三聚体的多重全息术”IEICE Trans。

M. Iwata et al.: "Development of Polyamine-based Dendrimers Toward Bidirectional Energy Conversion"RIKEN Review. 42. 63-66 (2001)

M. Iwata 等人：“面向双向能量转换的聚胺基树枝状聚合物的开发”RIKEN 评论。

S. Matsumoto et al.: "Optical Properties of J-Aggregates Formed by Bisazomethine Dyes (in Japanese)"IEICE Tech. Rep.. OME2002-18. 31-35 (2002)

S. Matsumoto 等人：“Bisazomethine 染料形成的 J-聚集体的光学性质（日语）”IEICE Tech。