J-Aggregate Formation of 6-Methyl-Merocyanine Dye in Mixed Langmuir–Blodgett Films with Arachidic Acid in a Wide Range of Mixing Ratio
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概要
- 論文の詳細を見る
By changing the dye concentration with respect to the fatty acid matrix, J-aggregate formation of the 6-methyl-merocyanine dye (6Me-DS) molecules in the mixed Langmuir–Blodgett film is studied by optical absorption and atomic force microscopy (AFM). The J-band is observed in the film with a wide range of molar ratios of the dye to the matrix down to $1:120$. The absorption peak shift of approximatelty 80 nm remains almost unchanged with the decrease of the molar ratio. The dye domains are identified by AFM as the region with low height. This is confirmed by comparing the total area of low-height domains with that calculated with the molecular occupation area ratio on the water surface. Typical dye domains with more than 103 molecules are observed, even in the films of $1:120$ molar ratio. The size is consistent with the expected size of J-aggregates calculated with the extended dipole model using the observed wavelength shift.
- 2002-10-15
著者
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Kuroda Shin-ichi
Department Of Applied Physics Nagoya University
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Hatta Ichiro
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Uchiyama Yasuhiro
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Marumoto Kazuhiro
Department Of Applied Physics Nagoya University
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Mori Takashi
Department Of Biochemistry And Cell Biology Institute Of Development And Aging Sciences Graduate Sch
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Ito Hiroshi
Department Neurosurgery Tokyo Medical College
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Marumoto Kazuhiro
Department of Applied Physics, Faculty of Engineering, Nagoya University, Furo, Chikusa-ku, Nagoya 464-8603, Japan
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Uchiyama Yasuhiro
Department of Applied Physics, Faculty of Engineering, Nagoya University, Furo, Chikusa-ku, Nagoya 464-8603, Japan
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MORI Takashi
Department of Applied Physics, Faculty of Engineering, Nagoya University
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Kuroda Shin-ichi
Department of Applied Physics, Faculty of Engineering, Nagoya University, Furo, Chikusa-ku, Nagoya 464-8603, Japan
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Hatta Ichiro
Department of Applied Physics, Faculty of Engineering, Nagoya University, Furo, Chikusa-ku, Nagoya 464-8603, Japan
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