Photocolloids With High Sensitivities - Their Preparations and Applications

高灵敏度光胶体的制备和应用

• 批准号: 02453074
• 负责人: KOKADO Hiroshi
• 金额: $ 3.46万
• 依托单位: Chiba University (1991)Tokyo Institute of Technology (1990)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-02453074/
• 关键词: Photosensitivity; Colloid; Surface Modification; Image Formation; Aluminum Oxide; Titanium Dioxide; Microcapsule; Aggregation; 化学修飾; 光凝集

Studies have been done to pursue possibilities and advantages of imaging processes based on phtosensitized colloids of submicrons. Two different ideas were adopted : one used photo-inactive colloids surface-modified with photosentive groups, and the other utilized photo-active colloids surface modified to attain practical dispersibility. Aluminum oxide covered with resin and subsequenty with azido-groups, as an example of the former, was examined for image formation which consisted of image exposure and diluted alkaline development, and it was revealed that unexpected high sensitivity was attainable, if materials and processing conditions were carefully controlled. The most important was the balance among various forces acting on particles, such as aggregation, adhesion to the substrate surface, and their photo-induced change.A unique feature of this colloidal process was that either negative or positive image could be obtained by changing merely the direction of exposure ; from the su … More bstrate side or from the free surface side. The second approach utilized titanium dioxide particles as the colloid. It is known to exibit excellent photocatalytic behavior. The surface was modified with unsaturated polyester molecules (origomer) in order to give a reactivity. Since it was difficult, to obtain photo-active and yet easily dispersing particles. later a part of the modifier was replaced with saturated polyester molecules. The stability of photosensitivity, however, seemed not to be sufficient. A treatment was successfully applied to the surface of titanium dioxide that consisted to introduce ethyleneglycol molecules at a relatively high temperature (230ﾟC) to refreshed amorphous phase at the surface. A suprizing new phenomenone was found out using thus prepared colloids. Those did not have photo-active modifiers. Nevertheless, photoinduced change was observed in the distribution peak of particle diameters from 0.1-0.4mum before illumination to double peaks at 1-2/mum and 0.08mum. Less

人们对基于亚微米光敏胶体的成像工艺的可能性和优点进行了研究。采用了两种不同的思路：一种是利用光敏基团对光无活性胶体进行表面改性，另一种是利用光活性胶体进行表面改性以获得实际的分散性。以环氧树脂和叠氮基团覆盖的氧化铝为例，研究了由图像曝光和稀释碱性显影组成的图像形成，结果表明，如果材料和加工条件得到精心控制，可以获得意想不到的高灵敏度。最重要的是作用在粒子上的各种力之间的平衡，例如聚集，与衬底表面的粘附，以及它们的光诱导变化。这个胶体过程的一个独特的特点是，无论是负或正的图像可以通过改变曝光方向获得；从更有基质的一侧或从自由表面一侧。第二种方法利用二氧化钛颗粒作为胶体。众所周知，它具有优异的光催化性能。用不饱和聚酯分子（原聚物）对其表面进行改性，使其具有反应活性。由于很难获得光活性且易于分散的颗粒。后来，部分改性剂被饱和聚酯分子所取代。然而，光敏性的稳定性似乎还不够。本文成功地对二氧化钛表面进行了处理，在相对较高的温度（230℃）下引入乙二醇分子，使其在表面刷新无定形相。利用这种制备的胶体，发现了一个惊人的新现象。那些没有光活性修饰剂。然而，在光照前0.1 ~ 0.4mum，颗粒直径分布峰出现光致变化，在光照前1 ~ 2/mum和0.08mum出现双峰。少

项目成果

K. Yanami and H. Kokado: "Some Interesting Properties of Coating Consisting of Photosensitized TiO_2 Colloids and Its Possible Application for Lithography" Fall Meeting of the Society of Photographic Science and Technology. November. 168-170 (1990)

K. Yanami 和 H. Kokado：“光敏 TiO_2 胶体组成的涂层的一些有趣的特性及其在光刻中的可能应用”摄影科学技术学会秋季会议。

J.L.Pu;S.I.Hanna;H.Kokado: "Photobinding of Colloidal Partieles by Means of Surface Modification V.A Comparison between Particulate and Homogeneous Imaging Systems" J.Imaging Science. 34. 207-212 (1990)

J.L.Pu；S.I.Hanna；H.Kokado：“通过表面修饰对胶体颗粒进行光结合 V.A 颗粒成像系统与均质成像系统之间的比较”J.Imaging Science。

JiaーLing Pu,Junーichi Hanna,Hiroshi Kokado: "Photobinding of Colloidal Particles by Means of Surface Modification.II.Surface Azido Density and Dispersibility" Journal of Imaging Science. 32. 232-237 (1988)

Jia-Ling Pu、Junichi Hanna、Hiroshi Kokado：“通过表面改性实现胶体颗粒的光结合。II.表面叠氮基密度和分散性”成像科学杂志 32. 232-237 (1988)。

JiaーLing Pu,Junーichi Hanna,Hiroshi Kokado: "Photobinding of Colloidal Particles by Means of Surface Modicfication.III.Influences of Dispersibility and Photoactivity of Azido Groups on the Colloidal Surface" Journal of lmaging Science. 33. 33-35 (1989)

Jia-Ling Pu、Jun-ichi Hanna、Hiroshi Kokado：“通过表面修饰实现胶体颗粒的光结合。III. 叠氮基团对胶体表面的分散性和光活性的影响”《影像科学》杂志 33. 33-35（ 1989）

J-h.Pu,S-I.Hanna,H.Kokado: "PhoTobinding of Colloidal Partieles by Means of Surface Modification V.A Comparison between Particulate and Homogeneous Imaging Systems" J.Imaging Science. 34. 207-212 (1990)

J-h.Pu、S-I.Hanna、H.Kokado：“通过表面修饰对胶体颗粒进行光结合 V.颗粒成像系统与均质成像系统之间的比较”J.Imaging Science。