A rapid response photochromic diarylethene material for rewritable holographic data storage

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• 作者：Qi Zhang (1)
  JingMing Li (2)
  LiHong Niu (1)
  ZiHui Chen (1)
  Lin Yang (1)
  ShiMan Zhang (1)
  LiangCai Cao (2)
  FuShi Zhang (1)
  
• 关键词：photochromism ; diarylethene ; rewritable holographic data storage ; optical storage
• 刊名：Chinese Science Bulletin
• 出版年：2013
• 出版时间：January 2013
• 年：2013
• 卷：58
• 期：1
• 页码：74-78
• 全文大小：780KB
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• 作者单位：Qi Zhang (1)
  JingMing Li (2)
  LiHong Niu (1)
  ZiHui Chen (1)
  Lin Yang (1)
  ShiMan Zhang (1)
  LiangCai Cao (2)
  FuShi Zhang (1)
  
  1. Key Laboratory of Organic Photoelectrons & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
  2. State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing, 100084, China
  
• ISSN：1861-9541

文摘

A novel diarylethene, namely 4,5-(2,5-dimethyl thiophene) phthalimide, was synthesized and successfully introduced to rewritable holographic data storage. Upon the alternative illumination of UV and visible light (λ>400 nm), this compound underwent rapid, reversible inter-conversion between colorless open-ring isomer and yellow-green ring-closed form in both solution and polymethyl methacrylate (PMMA) film. Subsequently, we investigated the characteristics of volume homographic recording of the diarylethene-doped PMMA film (1 μm thick). The maximum refractive index modulation (0.87- of the film during recording could be reached within just 120 s which gave the ability of fast recording. The high quality reconstruction after 50 write/erase cycles demonstrated its excellent fatigue-resistance and high resolution. All those results indicated that this molecule was a reliable fast write/erase holographic storage material.