U.S.-Brazil Cooperative Research: Ultrasmall Magnetic and Semiconductor Particles in Membrane Mimetic Systems

该奖项支持费尔南多·加伦贝克(巴西圣保罗坎皮纳斯)和贾诺斯·H·芬德勒(纽约锡拉丘兹)研究小组在磁性半导体有机化学方面的合作项目。纳米磁性和磁性半导体颗粒将通过巴西集团开发的方法制备，并将被并入美国集团目前使用的双层类脂膜和朗缪尔-布洛吉特薄膜中。它们将通过吸收光谱、扫描隧道显微镜以及在美国科学家实验室中测量的电化学、电光和磁光性质进行表征。将在巴西实验室进行重要的和补充的透射电子显微镜、穆斯堡尔谱和铁磁共振光谱分析。这项研究将导致开发新型的纳米磁性和磁性半导体粒子，这些粒子将具有潜在的重要应用，如电光、磁光和磁电光器件。拟议的研究与高技术应用的相关性将有助于激励学生，他们的培训将是合作的一个组成部分。巴西学生将在锡拉丘兹工作，美国学生也将在巴西工作。

This award supports a collaborative program in the organic chemistry of magnetic semiconductors between the research groups of Fernando Galembeck (Campinas, Sao Paulo, Brazil) and Janos H. Fendler (Syracuse, New York). Nanosized magnetic and magnetic- semiconductor particles will be prepared by methodologies developed by the Brazilian group and will be incorporated into bilayer lipid membranes and Langmuir-Blodgett films currently in use in the U.S. group. They will be characterized by absorption spectrophotometry, scanning tunneling microscopy, and by measuring electrochemical, electro-optical, and magneto-optical properties in the U.S. scientist's laboratory. Important and complementary characterization by transmission electron microscopy, Mossbauer and ferromagnetic resonance spectroscopy will be carried out in the Brazilian laboratories. The research will result in the development of novel, nanosized magnetic and magnetic-semiconductor particles which will have potentially important applications as electro-optical, magneto-optical, and magnetoelectro-optical devices. The relevance of the proposed research to high-technology applications will serve to motivate students, whose training will be an integral component of the cooperation. Brazilian students will work in Syracuse and U.S. students will do likewise in Brazil.