Optical Probes of Crystal Growth Mechanisms

通过这一基于成就的续展奖，有机和高分子化学项目继续支持西雅图华盛顿大学化学系Bart E.Kahr博士的工作。这项研究涉及研究晶体生长过程中发生的分子间相互作用，并将使用各种光测量，包括吸光度、发光、线性二色性、线性双折射和圆双折射(旋光)。晶体对光的影响将被用来成像活跃生长的晶体表面和测量有效电荷。最终有可能提供一份发光分子目录，用于识别特定的晶体生长过程。结合各种光学方法的效果，包括旋光成像，将有可能了解更多关于这些变化的非均匀样本。最终有可能设计出具有特定光学性质的混合晶体，并理解混合晶体生长在基质辅助激光解吸电离质谱学中的作用。

With this Accomplishment Based Renewal award the Organic and Macromolecular Chemistry Program continues its support for the work of Dr. Bart E. Kahr in the Department of Chemistry at the University of Washington in Seattle. The research involves the study of the intermolecular interactions which take place during crystal growth, and will use a variety of light measurements, including absorbance, luminescence, linear dichroism, linear birefringence, and circular birefringence (optical rotation). The influences of crystals on light will be used to image actively growing crystal surfaces and measure effective electrical charges. Eventually it may be possible to provide a catalog of luminescent molecules for identifying particular crystal growth processes. Combining effects from various optical methods, including optical rotation imaging, will make it possible to learn much about these changing heterogeneous samples. Eventually it may be possible to design mixed crystals with prescribed optical properties, and to understand the role of mixed-crystal growth in the success of matrix assisted laser desorption ionization in mass spectroscopy.