The Christiansen effect of brightly colored colloidal dispersion with an amphiphilic polymer

Kento Okoshi; Naoko Sano; Takamitsu Okumura; Akihiro Tagaya; Jun Magoshi; Yasuhiro Koike; Michiya Fujiki; Junji Watanabe

doi:10.1016/S0021-9797(03)00336-9

The Christiansen effect of brightly colored colloidal dispersion with an amphiphilic polymer

Kento Okoshi, Naoko Sano, Takamitsu Okumura, Akihiro Tagaya, Jun Magoshi, Yasuhiro Koike, Michiya Fujiki, Junji Watanabe

大学共通

研究成果: Article › 査読

11 被引用数 (Scopus)

抄録

A novel coloration phenomenon in a colloidal dispersion with an amphiphilic polymer was found. The dispersion consists of tetrahydrofuran (THF), an aqueous solution of sodium thiosulfate (Na₂S₂O₃·5H₂O), and hydroxypropylcellulose (HPC). The dispersion was emulsified by HPC as an amphiphilic polymer, so that the aqueous phase was confined in droplets in the THF matrix. It typically appeared bluish violet at room temperature and turned into blue with increasing temperature. In this system, the refractive indices of the inside and outside of the droplet coincided at a certain wavelength at which the light passes through without scattering, which is called the Christiansen effect. The color observed was successfully simulated by Mie's scattering theory in combination with the Christiansen effect.

本文言語	English
ページ（範囲）	473-477
ページ数	5
ジャーナル	Journal of Colloid And Interface Science
巻	263
号	2
DOI	https://doi.org/10.1016/S0021-9797(03)00336-9
出版ステータス	Published - 2003 7月 15

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
生体材料
表面、皮膜および薄膜
コロイド化学および表面化学

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10.1016/S0021-9797(03)00336-9

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title = "The Christiansen effect of brightly colored colloidal dispersion with an amphiphilic polymer",

abstract = "A novel coloration phenomenon in a colloidal dispersion with an amphiphilic polymer was found. The dispersion consists of tetrahydrofuran (THF), an aqueous solution of sodium thiosulfate (Na2S2O3·5H2O), and hydroxypropylcellulose (HPC). The dispersion was emulsified by HPC as an amphiphilic polymer, so that the aqueous phase was confined in droplets in the THF matrix. It typically appeared bluish violet at room temperature and turned into blue with increasing temperature. In this system, the refractive indices of the inside and outside of the droplet coincided at a certain wavelength at which the light passes through without scattering, which is called the Christiansen effect. The color observed was successfully simulated by Mie's scattering theory in combination with the Christiansen effect.",

keywords = "Christiansen effect, Colloid, Coloration, Hydroxypropylcellulose, Mie scattering",

author = "Kento Okoshi and Naoko Sano and Takamitsu Okumura and Akihiro Tagaya and Jun Magoshi and Yasuhiro Koike and Michiya Fujiki and Junji Watanabe",

note = "Funding Information: This work was supported by CREST (Core Research for Evolutional Science and Technology) of JST (Japan Science and Technology Corporation).",

year = "2003",

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doi = "10.1016/S0021-9797(03)00336-9",

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T1 - The Christiansen effect of brightly colored colloidal dispersion with an amphiphilic polymer

AU - Okoshi, Kento

AU - Sano, Naoko

AU - Okumura, Takamitsu

AU - Tagaya, Akihiro

AU - Magoshi, Jun

AU - Koike, Yasuhiro

AU - Fujiki, Michiya

AU - Watanabe, Junji

N1 - Funding Information: This work was supported by CREST (Core Research for Evolutional Science and Technology) of JST (Japan Science and Technology Corporation).

PY - 2003/7/15

Y1 - 2003/7/15

N2 - A novel coloration phenomenon in a colloidal dispersion with an amphiphilic polymer was found. The dispersion consists of tetrahydrofuran (THF), an aqueous solution of sodium thiosulfate (Na2S2O3·5H2O), and hydroxypropylcellulose (HPC). The dispersion was emulsified by HPC as an amphiphilic polymer, so that the aqueous phase was confined in droplets in the THF matrix. It typically appeared bluish violet at room temperature and turned into blue with increasing temperature. In this system, the refractive indices of the inside and outside of the droplet coincided at a certain wavelength at which the light passes through without scattering, which is called the Christiansen effect. The color observed was successfully simulated by Mie's scattering theory in combination with the Christiansen effect.

AB - A novel coloration phenomenon in a colloidal dispersion with an amphiphilic polymer was found. The dispersion consists of tetrahydrofuran (THF), an aqueous solution of sodium thiosulfate (Na2S2O3·5H2O), and hydroxypropylcellulose (HPC). The dispersion was emulsified by HPC as an amphiphilic polymer, so that the aqueous phase was confined in droplets in the THF matrix. It typically appeared bluish violet at room temperature and turned into blue with increasing temperature. In this system, the refractive indices of the inside and outside of the droplet coincided at a certain wavelength at which the light passes through without scattering, which is called the Christiansen effect. The color observed was successfully simulated by Mie's scattering theory in combination with the Christiansen effect.

KW - Christiansen effect

KW - Colloid

KW - Coloration

KW - Hydroxypropylcellulose

KW - Mie scattering

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U2 - 10.1016/S0021-9797(03)00336-9

DO - 10.1016/S0021-9797(03)00336-9

M3 - Article

C2 - 12909038

AN - SCOPUS:0038385176

SN - 0021-9797

VL - 263

SP - 473

EP - 477

JO - Journal of Colloid And Interface Science

JF - Journal of Colloid And Interface Science

IS - 2

ER -

The Christiansen effect of brightly colored colloidal dispersion with an amphiphilic polymer

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