Growth Mechanism of Polydiacetylene Monolayer at the Air-Water Interface

聚二乙炔单分子层在空气-水界面的生长机理

• 批准号: 08650394
• 负责人: YAMADA Susumu
• 金额: $ 1.41万
• 依托单位: TOMAKOMAI NATIONAL COLLEGE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650394/
• 关键词: LB Method; Polydiacetylene Monolayer; in-situ Observation; Large Domain; Differential Interference Microscope; Fluorescence Microscope; Solid-State Polymerization; Moleculau Orientation; LB膜; 単分子膜; 光重合

Morphological variation of diacetylene monolayers was investigated by in-situ observation at the air-water interface. The surface morphology changes with concentration of the spreading solution and area of the spreading surface. Two dimensional spiral structures with a diameter as large as 1 mm were obtained by spreading a solution of relatively high concentration. Uniformly oriented large single crystal domains of over 20mm×5mm were prepared when the area of the water surface was slowly increased by moving a barrier after a highly concentrated solution was spread on a small bounded water surface. A novel detection system enabled the observation of polarized fluorescence from the conjugated chains of the polydiaeetylene monolayer at the interface Long range ordering m the conjugated polymer chains persists along one direction throughout a domain. The surface structure of the monolayer during the polymerization process by UV irradiation was recorded in both air and argon atmospheres. In the argon atmosphere, the surface morphology remains constant during polymerization. On the other hand, a large deformation was found in the unit cell in the presence of oxygen (air).

通过在空气-水界面的原位观察，研究了二乙炔单分子膜的形态变化。表面形貌随铺展液浓度和铺展面面积的变化而变化。通过涂抹较高浓度的溶液，获得了直径为1 mm的二维螺旋结构。当高浓度溶液在小的有界水面上扩散后，通过移动障碍物缓慢增大水面面积，可以得到20 mm×5 mm以上的均匀取向的大单晶磁畴。一种新的检测系统使得能够在界面处观察到来自聚二乙烯单分子膜共轭链的偏振荧光。在整个结构域中，共轭聚合物链沿着一个方向存在。在空气和Ar气氛中，记录了紫外光辐照聚合过程中单分子膜的表面结构。在Ar气氛中，聚合过程中表面形态保持不变。另一方面，在氧气(空气)存在的情况下，晶胞内发生了较大的变形。

项目成果

S. YAMADA and Y. SHIMOYAMA: "Morphological Variation of the Monolayer Surface of Diacetylene during Polymerization at Air-Water Interface,"Jpn. J. Appl. Phys.. Vol. 36. 5242-5248 (1997)

S. YAMADA 和 Y. SHIMOYAMA：“空气-水界面聚合过程中丁二炔单层表面的形态变化”，Jpn。

S. YAMADA and Y. SHIMOYAMA: "Surface Morphologies of the Diacethylene Monolayer,"Jpn. J. Poly. Sci. Tec.. Vol. 55,No 4. 157-170 (1998)

S. YAMADA 和 Y. SHIMOYAMA：“二乙乙烯单层的表面形态”，Jpn。

Susumu Yamada: "Morphological Variation of the Monolayer Surface of Diacetylene during Polymerization at Air-Water Interface" Jpn.J.Appl.Phys. Vol.36,No.8. 5242-5248 (1997)

Susumu Yamada：“空气-水界面聚合过程中丁二炔单层表面的形态变化”Jpn.J.Appl.Phys。

山田進: "ポリジアセチレン単分子膜の表面形態と分子配列"高分子論文集. 55. 157-170 (1998)

Susumu Yamada：“聚二乙炔单层的表面形态和分子排列”Kobunshi Ronshu 55. 157-170 (1998)。

S. YAMADA and Y. SHIMOYAMA: "Molecular Orientation and Growth Direction of Polydiacetylene Single-Crystal Monolayer at Air-Water Interface"Jpn. J. Appl. Phys.. Vol. 35. 4480-4485 (1996)

S. YAMADA 和 Y. SHIMOYAMA：“空气-水界面处聚二乙炔单晶单层的分子取向和生长方向”Jpn。