化学学报 ›› 2004, Vol. 62 ›› Issue (23): 2348-2351. 上一篇    下一篇

研究简报

利用化学修饰的细菌视紫红质薄膜进行光学信息存储的研究

张国艳1, 梁冰1, 李宝芳1, 张建平1, 雷铭2, 姚保利2, 王英利2, 陈国夫2   

  1. 1. 中国科学院化学研究所胶体界面与化学热力学实验室, 北京, 100080;
    2. 中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室, 西安, 710068
  • 投稿日期:2004-04-27 修回日期:2004-06-04 发布日期:2014-02-17
  • 通讯作者: 李宝芳,E-mail:bfli@iccas.ac.cn E-mail:bfli@iccas.ac.cn
  • 基金资助:
    中国科学院知识创新方向性资助项目(No.KGCX2-401).

Study of the Chemically Modified Bacteriorhodopsin Film for Optical Information Storage

ZHANG Guo-Yan1, LIANG Bing1, LI Bao-Fang1, ZHANG Jian-Ping1, LEI Ming2, YAO Bao-Li2, WANG Ying-Li2, CHEN Guo-Fu2   

  1. 1. The Laboratory of Colloid, Interface and Themodynamics Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080;
    2. State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068
  • Received:2004-04-27 Revised:2004-06-04 Published:2014-02-17

细菌视紫红质(bacteriorhodopsin,bR)具有独特的光、化学和热稳定性.bR光循环中间态M态的最大吸收峰相对于始态明显地发生蓝移,所以基于bR(→)M的光致变色模型可以为光学应用尤其是信息存储提供一个机制.但是野生型bR 中M态的寿命很短,不适合用来进行信息存储.本文采用化学添加剂的方法,将bR/聚乙烯醇(PVA)薄膜的中间态M态的寿命显著延长.用此化学修饰的bR薄膜作为记录介质进行缩微图像存储,所得到的图像具有较高的对比度和较长的保存时间.此实验首次实现了在化学修饰的bR薄膜上基于bR始态和中间态M态的双稳态模型在光学信息存储上的应用.

关键词: 细菌视紫红质, 化学修饰, M态, 光学信息存储

Bacteriorhodopsin (bR) is a photochromic protein in the two-dimensional crystalline membrane—purple membrane, which is astonishingly stable towards chemical and thermal degradation.However, the lifetime of the M state in wild-type bR was considered to be too short for optical applications.The lifetime of the M state could be prolonged obviously when a crown ether complex was used as the chemical additive.With this chemically modified bR-PVA film as recording medium, micro images were stored on the film with higher contrast ratio and longer decay time in our self-made optical storage system.To our knowledge, it is the first time domestically to use the chemically modified bR film in the field of optical information storage based on the ground state and the M state.

Key words: bacteriorhodopsin, chemical modification, M state, optical information storage