高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (5): 766.

• 论文 • 上一篇    下一篇

照相明胶层中金催化的无电沉积的正电子湮没研究

张宜恒1, 宫竹芳2, 张广祥1, 姜志全1, 徐绪国1, 阎天堂1, 俞书勤3, 庄思永4, 彭必先5   

  1. 1. 中国科学技术大学, 应用化学系, 合肥 230026;
    2. 中国科学技术大学, 近代物理系, 合肥 230026;
    3. 中国科学技术大学, 化学物理系, 合肥 230026;
    4. 华东理工大学精细化工研究所, 上海 200237;
    5. 中国科学院感光化学研究所, 北京 100101
  • 收稿日期:1999-05-11 出版日期:2000-05-24 发布日期:2000-05-24
  • 通讯作者: 张宜恒(1963年出生),男,博士,副教授,从事影像科学及光化学研究.E-mail: yhzhang@ustc. edu.cn
  • 基金资助:

    国家自然科学基金(批准号:29876038)

Studies on Electroless Deposition Catalyzed by Gold in Photographic Gelatin Layer with Positron Annihilation

ZHANG Yi-Heng1, GONG Zhu-Fang2, ZHANG Guang-Xiang1, JIANG Zhi-Quan XU Xu-Guo1, YAN Tian-Tang1, YU Shu-Qin1, ZHUANG Si-Yong3, PENG Bi-Xian4   

  1. 1. Department of Applied Chemistrys, University of Science and Technology of China, Hefei 230026, China;
    2. Deportment of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
    3. Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;
    4. Institute of Fine Chemical Industry, East China University of Science and Technology, Shanghai 200237, China;
    5. Institute of Photographic Chemistry, Chinese Academy of Sciences, Beijing 100101, China
  • Received:1999-05-11 Online:2000-05-24 Published:2000-05-24

摘要: 采用正电子湮没技术(PAT)研究了照相明胶中的自由体积空穴在无电沉积过程中的作用机理。研究结果表明,活化饱和后,照相明胶的自由体积空穴的平均尺寸约减小0.011nm3,相当于一个Au原子的体积的大小,即照相明胶大分子中的每个自由体积空穴平均被填充了一个Au原子,该Au原子作为催化活性核催化铜的沉积,使物理显影生成的影像为紧密铜粒子的堆积形貌,而不是丝状形貌。铜经无电沉积饱和后,照相明胶的自由体积空穴的平均大小约减小了0.020nm3,即照相明胶的自由体积空穴对铜物理显影过程中铜的沉积没有阻碍作用,铜无电沉积近似为各向同性的球状堆积。

关键词: 无电沉积, 正电子湮没技术, 照相明胶

Abstract: The mechanism of action of free volume holes in photographic gelatin on the electroless deposition process has been studied by Positron Annihilation Technology (PAT) in this paper. The results show that after complete activation, the average volume of the free volume holes in photographic decreas- es by about 0.011 nm3, which is equivalent to the volume of a gold atom. In the view of statistical average concept, every free volume hole is filled with a gold atom to catalyze the electroless copper deposition. Thus the imaging feature formed in the physical development is not filament, but spherical stacks. After electroless copper deposition is accomplished, the average volume of the free volume holes in photographic gelatin decreases by about 0.020 nm3, which is equivalent to the volume of three copper atom. Therefore the deposition of copper in isotropic and spherical form was not hindered by free volume holes in photographic gelatin.

Key words: Electroless deposition, Positron annihilation technology, Photographic gelatin

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