Metal Colloids and Thin Films

金属胶体和薄膜

• 批准号: 9115964
• 负责人: Kenneth Klabunde
• 金额: $ 1.38万
• 依托单位: Kansas State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-03-01 至 1995-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115964&HistoricalAwards=false
• 关键词: Metal; Colloids; Thin; Films

This Science in Developing Countries award will support the collaboration of Kenneth Klabunde of Kansas State University and Galo Cardenas- Trivino of the University of Conception, Chile. The project aims to (1) prepare M-solvent colloids with Cu, Ag, and Sn, and with monomers such as styrene and methylmethacrylate; (2) characterize colloidal particles by electrophoresis, TEM, SEM, FTIR, Mossbauer, and SRS; and (3) characterize metallic films formed from the colloids by TGA, DSC, microanalyses, and resistivity measurements. The researchers will use a new method for preparing nonaqueous colloidal metal particles, using metal evaporation and solvation of atoms in excess cold organic solvents. The mobile metal atoms cluster upon warming. The forming particles stop growing due to solvation and electrostatic repulsion. Various metals have been shown to form stable colloidal solutions. The major interest in these new colloids is in their use as metallic film precursors. The researchers aim to develop them for chemical liquid (rather than vapor) deposition of films. With a recent patent, much industrial interest has developed. This joint project is expected to facilitate progress in metal- colloid, metal film work. The U.S. side has expertise in colloid chemistry and state-of-the-art equipment for preparing and analyzing colloidal solutions and metal films. The Chilean side has expertise in polymer characterization and necessary TGA, DSC, and TEM/SEM facilities, which the U.S. side lacks.

该发展中国家科学奖将支持堪萨斯州立大学的肯尼思·克拉邦德和智利康塞普申大学的加洛·卡德纳斯-特里维诺的合作。 该项目的目标是（1）用Cu、Ag、Sn以及苯乙烯和甲基丙烯酸甲酯等单体制备M溶剂胶体； (2)通过电泳、TEM、SEM、FTIR、Mossbauer和SRS表征胶体颗粒； (3) 通过 TGA、DSC、微量分析和电阻率测量来表征由胶体形成的金属膜。 研究人员将使用一种新方法来制备非水胶体金属颗粒，利用金属蒸发和原子在过量冷有机溶剂中的溶剂化。 移动的金属原子在变暖时聚集。 由于溶剂化和静电排斥，形成的颗粒停止生长。 多种金属已被证明可以形成稳定的胶体溶液。 人们对这些新型胶体的主要兴趣在于它们作为金属薄膜前体的用途。 研究人员的目标是开发它们用于化学液体（而不是气相）沉积薄膜。 最近的一项专利引起了工业界的广泛关注。 该联合项目预计将促进金属胶体、金属薄膜工作的进展。 美方拥有胶体化学方面的专业知识以及用于制备和分析胶体溶液和金属薄膜的最先进设备。 智利方面拥有聚合物表征方面的专业知识以及必要的TGA、DSC和TEM/SEM设施，而美国方面则缺乏这些设施。