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

该奖项支持Fernando Galembeck （Campinas, Sao Paulo, Brazil）和Janos H. Fendler （Syracuse, New York）研究小组在磁性半导体有机化学方面的合作项目。纳米级磁性和磁性半导体粒子将由巴西研究小组开发的方法制备，并将被纳入双层脂质膜和Langmuir-Blodgett膜中，目前美国研究小组正在使用这种膜。他们将通过吸收分光光度法，扫描隧道显微镜，并通过测量电化学，电光和磁光性质在美国科学家的实验室进行表征。通过透射电子显微镜、穆斯堡尔和铁磁共振光谱进行重要和互补的表征将在巴西实验室进行。这项研究将导致新型纳米级磁性和磁性半导体粒子的发展，这些粒子将在电光、磁光和磁电光器件中具有潜在的重要应用。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.