Nitroanilines enhancing the holographic data storage characteristics of the 9,10‐phenanthrenequinone‐doped poly(methyl methacrylate) photopolymer |
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| Authors: | Cheng‐Jung Ko Yi‐Nan Hsiao Shiuan‐Huei Lin Po‐Lin Chen Wha‐Tzong Whang Ken Y. Hsu Yu‐Sheng Hsiao Chun‐Chao Chen |
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| Affiliation: | 1. Department of Materials Science and Engineering, National Chiao Tung University, Hsin‐Chu 300, Taiwan, Republic of China;2. Department of Photonics and Institute of Electro‐Optical Engineering, National Chiao Tung University, Hsin‐Chu 300, Taiwan, Republic of China;3. Department of Electrophysics, National Chiao Tung University, Hsin‐Chu 300, Taiwan, Republic of China |
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| Abstract: | This article describes an approach toward improving the characteristics of a photopolymer for holographic data storage application. The maximum diffraction efficiency (ηmax) and dynamic range (M#) of 9,10‐phenanthrenequinone (PQ)‐doped poly(methyl methacrylate; PMMA) both improved significantly after co‐doping with one of three nitroanilines—N,N‐dimethyl‐4‐nitroaniline (DMNA), N‐methyl‐4‐nitroaniline (MNA), and 4‐nitroaniline (pNA). In particular, the value of ηmax increased from 38% for the PMMA/PQ system to 72% for the PMMA/PQ/DMNA system (a 1.89‐fold improvement) and the value of M# increased accordingly from 2.7 to 7.3 (a 2.70‐fold improvement). Thus, the holographic data storage characteristics of PMMA/PQ photopolymers can be improved through co‐doping with nitroaniline compounds. We also investigated the mechanism of the nitroaniline‐induced improvement in optical storage performance using proton nuclear magnetic resonance and X‐ray photoelectron spectroscopy. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 |
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| Keywords: | volume holographic recording nitroaniline phenanthrenequinone poly(methyl methacrylate) photopolymer birefringence |
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