Second-Harmonic Generation in Noncentrosymmetric p-Nitroaniline Spontaneously Crystallized by Quenching from Lyotropic Liquid Crystalline Poly(γ-benzyl-L-glutamate)
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概要
- 論文の詳細を見る
We have found a new crystal structure of p-nitroaniline (pNA) formed by quenching a mixture of poly(γ-benzyl-L-glutamate) (PBLG) and pNA in its lyotropic cholesteric liquid crystalline phase. Strong second-harmonic generation (SHG) has been observed in this quenched material, indicating the formation of a noncentrosymmetric structure of pNA. The maximum SH light intensity observed in PBLG/pNA=3:2 is as large as 3.6 times that of 2-methyl-4-nitroaniline (MNA) powder. We have confirmed, on the basis of X-ray and differential scanning calorimetry (DSC) measurements, that the SHG-active crystal of pNA is segregatedly formed from the crystal domain consisting of α-helical PBLG.
- 社団法人応用物理学会の論文
- 1991-08-15
著者
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梶川 浩太郎
東工大・工
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TAKEZOE Hideo
Tokyo Institute of Technology, Department of Organic and Polymeric Materials
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FUKUDA Atsuo
Tokyo Institute of Technology, Department of Organic and Polymeric Materials
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KAJIKAWA Kotaro
Tokyo Institute of Technology, Department of Organic and Polymeric Materials
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Takezoe Hideo
Tokyo Institute Of Technology Department Of Organic And Polymeric Materials
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Watanabe J
Department Of Organic And Polymeric Materials Tokyo Institute Of Technology
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Watanabe Junji
Tokyo Institute of Technology
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TOYOOKA Takehiro
Central Technical Research Laboratory, Nippon Oil Corporation
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Toyooka Takehiro
Nippon Oil Corporation Central Technical Research Laboratory
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Fukuda Asuo
Department Of Kansei Engineering Faculty Of Textile Science And Technology Shinshu University
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Ishii Takafumi
Central Technical Research Laboratory Nippon Oil Co. Ltd.
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KAMIO Yuichi
Tokyo Institute of Technology, Department of Polymer Chemistry
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Kamio Yuichi
Tokyo Institute Of Technology Department Of Polymer Chemistry
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Fukuda Atsuo
Tokyo Institute Of Technology Department Of Bioengineering
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Watanabe Junji
Tokyo Inst. Technol. Tokyo Jpn
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Toyooka Takehiro
Central Technical Research Laboratory, JX Nippon Oil & Energy Corporation, Yokohama 231-0815, Japan
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