コロイド結晶組織体における情報交換・伝達のシンクロナス効果のモデル化

• Project/Area Number: 11167241
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Gifu University
• Principal Investigator: 大久保 恒夫 岐阜大学, 工学部, 教授 (70026194)
• Co-Investigator(Kenkyū-buntansha): 木村 浩 岐阜大学, 工学部, 助手 (40313910) ; 土田 亮 岐阜大学, 工学部, 助教授 (60183076)
• Project Period (FY): 1999 – 2002
• Project Status: Completed (Fiscal Year 2002)
• Budget Amount: ¥38,200,000 (Direct Cost: ¥38,200,000); Fiscal Year 2002: ¥6,000,000 (Direct Cost: ¥6,000,000); Fiscal Year 2001: ¥7,400,000 (Direct Cost: ¥7,400,000); Fiscal Year 2000: ¥15,600,000 (Direct Cost: ¥15,600,000); Fiscal Year 1999: ¥9,200,000 (Direct Cost: ¥9,200,000)
• Keywords: コロイド結晶 / シンクロナイゼーション / 情報変換 / 情報伝達 / 電気光学効果 / 散逸構造 / レオオプティックス / 多層錯体 / 光学顕微鏡 / 反射スペクトル / 動的粘弾性測定

Research Abstract

コロイド結晶の電気光学効果でレーザ光源を用いると電気光学特性が格段に向上することを明らかにした。コロイド結晶が内部蛍光を閉込める効果を直接観察することに予備的に成功した。また乾燥散逸構造における溶質によらない共通なパターンと個性的なパターンを区別することが可能になった。またコロイド結晶やコロイド合金の粘弾性測定と反射スペクトル測定を同時に行うことによりマクロな特性とミクロな特性との相関性を解析した。更に、高分子イオン・コロイド交互多層錯体形成におけるpHの影響を明らかにするとともに、動的光散乱測定から新しいシンクロナス性を見出した。具体的には、1)コロイド結晶の電気光学効果をレーザ光源を用いて調査した。レーザ光源を用いると白色光源に比べてはるかに感度が高く、高調波特性を制御できることが判明した。コロイダルシリカ粒子と感温性ゲルの脱塩系水分散液を用いることにより、感温性コロイド結晶が得られた。コロイド粒子-ゲル粒子間のシンクロナス効果が重要であることが判明した。またコロイド結晶における電気ポテンシャル測定を行った。2)各種コロイド分散液及び低分子・高分子電解質溶液の乾燥散逸構造を調査した。球形粒子、異方形粒子、各種界面活性剤、高分子電解質、そして蛍光性色素を用いた。分散液、溶液系全般に共通なパターンと、溶質に特有なパターンとに分類することに成功した。3)種々の超脱塩系コロイド粒子水分散液のレオロジー特性を調査した。コロイド結晶及びコロイド合金は降伏挙動を示し、添加塩によって融解し粘度・弾性率が急激に減少した。ミクロなコロイド結晶の構造変化とマクロなレオロジー特性とのシンクロナスな相関性を明らかにした。4)コロイダルシリカ粒子へのシンクロナスな高分子イオンの交互多層吸着形成に及ぼすpHの影響を調査した。更に動的光散乱測定によりコロイド・高分子イオン交互多層錯体の特性を調査した。

Research Products

• [Publications] T.Okubo et al.: "Rheo-optical study of colloidal crystals"Phys.Chem.Chem.Phys.. 4. 2760-2763 (2002)
• [Publications] T.Okubo et al.: "Rotational Diffusion of Tungstic Acid Colloids in Microgravity as Studied by Aircraft Experiments"Colloid Polym.Sci.. 280. 228-233 (2002)
• [Publications] T.Okubo et al.: "Kinetic Analysis of Colloidial Crystallization of Silica Spheres Modified with Polymers on Their Surfaces in Acetonitrile"Colloid Poly.Sci.. 280. 290-295 (2002)
• [Publications] T.Okubo et al.: "Structural and Dynamic Properties of Colloidal Liquids and Gases of Silica Spheres (29 nm in Diameter) as Studied by the Light Scattering Measurements"Colloid Polym.Sci.. 280. 438-445 (2002)
• [Publications] T.Okubo et al.: "Rigidity of Colloidal Crystals of Silica Spheres Modified with Polymers on Their Surfaces in Organic Solvents"Colloid Poly.Sci.. 280. 446-453 (2002)
• [Publications] T.Okubo et al.: "Dissipative Structures Formed in the Course of Drying the Colloidal Crystals of Silica Spheres on a Cover Glass"Colloid Polym.Sci.. 280. 454-460 (2002)
• [Publications] T.Okubo et al.: "Synchronous Multi-Layered Adsorption of Macrocations and Macroanions on Colloidal Spheres. Influence of Foreign Salt and Basicity or Acidity of the Macroions"Colloid Polym.Sci.. 280. 533-538 (2002)
• [Publications] H.Kimura et al.: "Rheological Properties of Bentonite in the Exhaustively Deionized Suspensions and in the Presence of Sodium Chloride"Colloid Polym.Sci.. 280. 579-583 (2002)
• [Publications] T.Okubo et al.: "Dissipative Structures Formed in the Course of Drying the Colloidal Crystals of Monodispersed Polystyrene Spheres on a Cover Glass"Colloid Polym.Sci.. 280. 1001-1008 (2002)
• [Publications] K.Yoshinaga et al.: "Colloidal Crystallization of Monodisperse and Polymer-Modified Colloidal Silica in Organic Solvents"Colloid & Surfaces. A204. 285-293 (2002)
• [Publications] A.Tsuchida et al.: "Electro-Optics of Colloidal Crystals Studied by the Electric Potential and Reflection Spectroscopy"Colloid & Surfaces. A209. 235-242 (2002)
• [Publications] T.Okubo et al.: "Thermosensitive Colloidal Crystals of Silica Spheres in the Presence of Gel Spheres of Poly (N-isopropyl acrylamide)"Langmuir. 18. 6783-6788 (2002)
• [Publications] T.Okubo et al.: "Microgravity Effects on Some Thermodynamic and Kinetic Properties of Colloidal Dispersions", Microgravity Transport Processes in Fluid, Thermal, Biological, and Material Sciences"Ann. New York Acad.Sci.. 974. 164-175 (2002)
• [Publications] T.Okubo et al.: "Crystalline Colloids, in Encyclopedia of Surface and Colloid Science"Marcel Dekker. 1309 (2002)
• [Publications] T.Okubo et al.: "Rheo-optical study of colloidal crystals"Phys. Chem. Chem. Phys.. (in press). (2002)
• [Publications] T.Okubo et al.: "Synchronous Multi-Layered Adsorption of Macrocations and Macroanions on Colloidal Spheres. Influence of Foreign Salt and Basicity or Acidity of the Macroions"Colloid Polymer Sci.. (in press). (2002)
• [Publications] T.Okubo et al.: "Rigidity of Colloidal Crystals of Silica Spheres Modified with Polymers on Their Surfaces in Organic Solvents"Colloid Polymer Sci.. (in press). (2002)
• [Publications] T.Okubo et al.: "Structural and Dynamic Properties of Colloidal Liquids and Gases of Silica Spheres (29 nm in Diameter) as Studied by the Light Scattering Measurements"Colloid Polymer Sci.. (in press). (2002)
• [Publications] T.Kimura et al.: "Rheological Properties of Bentonite in the Exhaustively Deionized Suspensions and in the Presence of Sodium Chloride"Colloid Polymer Sci.. (in press). (2002)
• [Publications] T.Okubo et al.: "Kinetic Analysis of Colloidal Crystallization of Silica Spheres Modified with Polymers on Their Surfaces in Acetonitrile"Colloid Polymer Sci.. 280. 290-295 (2002)
• [Publications] T.Okubo et al.: "Rotational Diffusion of Tungstic Acid Colloids in Microgravity as Studied by Aircraft Experiments"Colloid Polymer Sci.. 280. 228-233 (2002)
• [Publications] T.Okubo et al.: "Rigidity of Colloidal Alloys as Studied by Reflection Spectroscopy in Sedimentation Equilibrium"Colloid Polymer Sci.. 279. 571-578 (2001)
• [Publications] A.Tsuchida et al.: "Rotational Diffusion of Tungstic Acid Colloids in Microgravity Studied by Free-Fall Experiments-Effects of Sodium Chloride and Ethyl Alcohol-"Colloid Polymer Sci.. 279. 427-433 (2001)
• [Publications] T.Okubo et al.: "Seed Polymerization of Tetraethyl <I>ortho</I>-Silicate in the Presence of Colloidal Silica Spheres"Colloid Polymer Sci.. 279. 1236-1240 (2001)
• [Publications] T.Okubo et al.: "Microgravity Effects on the Properties of Colloidal Dispersions"Studies in Surf. Sci. and Catalysis. 132. 285-288 (2001)
• [Publications] T.Okubo et al.: "Rheo-Optics of Colloidal Crystals"Studies in Surf. Sci. and Catalysis. 132. 387-390 (2001)
• [Publications] 大久保恒夫: "美しいコロイド結晶の世界"O plus E. 23. 307-312 (2001)
• [Publications] 土田 亮 他: "微小重力下におけるコロイド分散液の自己組織化"日本マイクログラビティ応用学会誌. 18. 81-86 (2001)
• [Publications] T.Okubo: "Crystalline Colloids"Marcel Dekker(in press). (2002)
• [Publications] 大久保恒夫: "美しいコロイドと界面の世界"まつお出版. 191 (2001)
• [Publications] 大久保恒夫: "固液界面の特徴とそこで起こる現象"界面ハンドブック. (2001)
• [Publications] T.Okubo et al.: "Rigidity of Colloidal Alloys as Studied by Reflection Spectroscopy in Sedimentation Equilibrium"Colloid Polymer Sci.. (in press). (2001)
• [Publications] T.Okubo et al.: "Rigidity of Colloidal Crystals in Organic Solvents of Silica Spheres Modified with Polymers on Their Surfaces"J.Colloid Interface Sci.. (in press). (2001)
• [Publications] T.Okubo et al.: "Dissipative Structures of the Deionized Process on a Cover Glass"Colloid Polymer Sci.. (in press). (2001)
• [Publications] A.Tsuchida et al.: "Rotational Diffusion of Tungstic Acid Colloids in Microgravity Studied by Free-Fall Experiments"Colloid Polymer Sci.. (in press). (2001)
• [Publications] T.Okubo et al.: "Suspension Viscosity of Colloidal Crystals and Liquids in Exhaustively Deionized Aqueous Suspensions Coexisted with Ion-Exchange Resins"Colloid Polymer Sci.. 278. 571-575 (2000)
• [Publications] T.Okubo et al.: "Giant Colloidal Crystals of Fluorine-Containg Polymer Spheres in the Exhaustively Deionized Aqueous Suspensions and in the Presence of Sodium Chloride"Colloid Polymer Sci.. 278. 469-474 (2000)
• [Publications] T.Okubo et al.: "Kinetic Analyses of the Colloidal Crystallization in a Wide Range of Sphere Concentrations as Studied by Reflection Spectroscopy"J.Colloid Interface Sci.. 228. 151-156 (2000)
• [Publications] A.Tsuchida et al.: "Microgravity Experiments on Colloidal Crystallization of Silica Spheres in the Presence of Sodium Chloride"Colloid Polymer Sci.. 278. 872-877 (2000)
• [Publications] T.Okubo et al.: "Synchronous Alternative Multi-Layered Adsorption of Poly (4-vinyl-N-n-butylpyridinium) Cations and Poly (styrene sulfonate) Anions on Poly (styrene) Colloidal Spheres"Colloid Polymer Sci.. 278. 380-384 (2000)
• [Publications] T.Okubo et al.: "Kinetics of Colloidal Alloy Crystallization of Binary Mixtures of Monodispersed Polystyrene and/or Colloidal Silica Spheres Having Different Sizes and Densities in Microgravity Using Aircraft"Colloid Polymer Sci.. 278. 202-210 (2000)
• [Publications] 大久保恒夫: "コロイド結晶の美しい世界"粉体工学会誌. 37. 371-379 (2000)
• [Publications] 土田亮 他: "微小重力下におけるコロイド分散系の性質"高分子. 49. 15-15 (2000)
• [Publications] 大久保恒夫 他: "コロイド結晶を用いる光学素子"シーエムシー刊「微粒子・粉体の最先端技術」、2編4章1. 9 (2000)
• [Publications] 大久保恒夫: "美しいコロイドと界面の世界"まつお出版. 191 (2001)
• [Publications] Tsuneo Okubo et al.: "Kinetics of Colloidal Alloy Crystallization of Binary Mixtures of Monodispersed Polystyrene and /or Colloidal Silica Spheres Having Different Sizes and Densities in Microgravity Using Aircraft"Colloid Polymer Sci.. (in press). (2000)
• [Publications] Tsuneo Okubo et al.: "Kinetic Analyses of Colloidal Crystallization in Microgravity ---Aircraft Experiments---"Colloids Surfaces. A153. 515-524 (1999)
• [Publications] Tsuneo Okubo et al.: "Nucleation and Growth Processes in the Colloidal Crystallization fo Silica Spheres in the Presence of Sodium Chloride as Studied by Reflection Spectroscopy"Colloid Polymer Sci.. 277. 191-196 (1999)
• [Publications] Tsuneo Okubo et al.: "Rotational Diffusion of Anisotropic-Shaped Colloidal Particles in Microgravity as Studied by Free-Fall Experiments"Colloid Polymer Sci.. 277. 601-606 (1999)
• [Publications] Tsuneo Okubo et al.: "Kinetic Study of the Formation Reaction of Colloidal Silica Spheres by Transmitted-Light-Intensity and Dynamic Light-Scattering Measurements"Colloid Polymer Sci.. 277. 483-487 (1999)
• [Publications] Tsuneo Okubo et al.: "Kinetic Study of the Formation Reaction of Colloidal Silica Spheres in Microgravity Using Aircraft"Colloid Polymer Sci.. 277. 474-478 (1999)
• [Publications] Tsuneo Okubo et al.: "Electric Field-Induced Shear Waves of Colloidal Crystals as Studied by the Electro-optic Reflection Spectroscopy"Colloids Surfaces. A148. 87-94 (1999)
• [Publications] Tsuneo Okubo et al.: "Electro-Optics of Colloidal Crystals as Studied by the Reflection Spectroscopy"Colloids Surfaces. A149. 431-441 (1999)
• [Publications] Akira Tsuchida et al.: "Propagation of Electrooptic Shear Waves in Colloidal Crystals As Studied by Reflection Spectroscopy"Langmuir. 15. 4203-4207 (1999)
• [Publications] Tsuneo Okubo et al.: "Suspension Viscosity of Colloidal Crystals and Liquids in Exhaustively Deionized Aqueous Suspensions Coexisted with Ion-Exchange Resins"Colloid Polymer Sci.. (in press).
• [Publications] Tsuneo Okubo et al.: "Synchronous Alternative Multi-Layered Adsorption of Poly(4-vinyl-N-n-butyulpyridinium) Cations and Poly(styrene sulfonate) Anions on Poly(styrene) Colloidal Spheres"Colloid Polymer Sci.. (in press).
• [Publications] Tsuneo Okubo et al.: "Giant Colloidal Crystals of Fluorine-Containing Polymer Spheres in the Exhaustively Deionized Aqueous Suspensions and in the Presence of Sodium Chloride"Colloid Polymer Sci.. (in press).
• [Publications] Tsuneo Okubo et al.: "Absorption of Polyelectrolytes on Colloidal Surfaces as Studied by Electrophoretic and Dynamic Light-Scattering Techniques"J. Colloid Interface Sci.. 213. 565-571 (1999)
• [Publications] Tsuneo Okubo et al.: "Alternate Sign Reversal in the ζ-Potential and Synchronous Expansion and Contraction in the Absorbed Multi-layers of Poly(4-vinyl-N-n-butylpyridinium bromide) Cations and Poly(styrene sulfonate) Anions on Colloidal Silica Spheres"Colloid Polymer Sci.. 277. 813-817 (1999)
• [Publications] Tsuneo Okubo et al.: "Kinetic Analyses of Colloidal Crystallization in a Sinusoidal Electric Field as Studied by Reflection Spectroscopy"J. Colloid Interface Sci.. 211. 151-159 (1999)
• [Publications] Maria Stoimenova et al.: "Relation of Electro-Acoustic Effects to Low Frequency Anomalies in Colloidal Electro-Optics"Colloids Surfaces. A148. 83-86 (1999)