Development of Optical Memory Recording Films using Conjugated Polymers of Polydiacetylenes

使用聚二乙炔共轭聚合物开发光存储记录薄膜

基本信息

批准号：
61850002
负责人：
KODA Takao
金额：
$ 6.27万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1988
项目状态：
已结题

项目摘要

The aim of present project is to explore possibility of utilizing the photo-induced isomerization of the conjugated polymers, in the form of thin films, as a fast and high density optical information recording. For this purpose, we have chosen specific class of conjugated polymers, polydiacetylenes, which are obtained by the solid state polymerization from diacetylene monomers, RC=C-C=CR, wher R stands for the suitable sudstitutional side group. A remarkable feature of these polymers is that their chemical and physical properties can be varied to a large extent by modifying the structure of R. Making use of this advantage, we were able to prepare fairly good thin films of polydiacetylenes by means of conventional vacuum deposition method. As compared with previous film fabrication technigues, the present method is more suitable for the application to optical recording devices, for the simplicity, the film guality , as well as the feasibility of preferential alignment of polymers in the film. Various optical properties of these vacuum deposited films have been characterized. An important finding is the possibility of sensitization of photochromism in the near infrared region by the photo-induced electron injection from an organic dye layer, such as phthalocyanine film, to the polydiacetylene films. It has been proved by this study that polydiacetylene films are useful for high speed ( with the response time of a few nsecond) and high resolution optical recording material for the near infrared light obtained from a conventional semiconductor laser.

目前项目的目的是探索以薄膜的形式利用共轭聚合物的光诱导的异构化，作为快速和高密度的光学信息记录。为此，我们选择了特定的共轭聚合物聚合物聚合物聚合物，这些聚合物是通过二乙烯单体的固态聚合获得的，RC = C-C = Cr，R r代表合适的Sudsitutional side群体。这些聚合物的一个显着特征是，可以通过修改R.利用此优势的结构来在很大程度上变化它们的化学和物理性能，我们能够通过常规真空沉积方法来制备相当好的聚乙烯烯的薄膜。与以前的膜制造技术相比，目前的方法更适合于光学记录设备的应用，为了简单，膜的态度以及胶片中聚合物优先对齐的可行性。这些真空沉积膜的各种光学特性已经表征。一个重要的发现是，通过光诱导的电子注射从有机染料层（例如邻苯丙氨酸膜）到聚二乙烯薄膜，可以通过光诱导的电子注射来敏化光致变色。这项研究证明了聚乙二醇膜对于高速（响应时间为几个Nsecond）和高分辨率光学记录材料很有用，可用于从常规半导体激光器获得的近红外光。