Acquisition of an X-ray Powder Diffractometer with an Area Detector and Variable Temperature Capability

根据化学研究仪器和设施（CRIF）计划的这份合同，乔治城大学化学系将获得一台具有区域探测器和变温能力的x射线粉末衍射仪。该设备将加强许多领域的研究，包括：a)研究液晶相和这些系统中超分子结构的性质；B)凝胶基质内低分子质量凝胶材料的分子间相互作用和超分子结构；C)纳米晶固体择优取向生长与光学效应之间的关系；d)通过测定电池常数来识别固态材料。x射线衍射仪可以精确测量分子的完整三维结构，包括键的距离和角度，并提供分子相对于邻近分子的空间排列的准确信息。这些研究将对材料科学产生重大影响。

With this award from the Chemistry Research Instrumentation and Facilities (CRIF) Program, the Department of Chemistry at Georgetown University will acquire an X-ray powder diffractometer with area detector and variable temperature capability. This equipment will enhance research in a number of areas including the following: a) studies on liquid crystalline phases and the nature of the supramolecular structures in these systems; b) intermolecular interactions of and the supramolecular architecture of low molecular mass gelator materials within gel matrices; c) the relationship between growth of nanocrystalline solids in preferred orientations and resulting optical effects; and d) the identification of solid state materials via the determination of cell constants.The X-ray diffractometer allows accurate and precise measurements of the full three dimensional structure of a molecule, including bond distances and angles, and it provides accurate information about the spatial arrangement of the molecule relative to the neighboring molecules. These studies will have a signifcant impact in materials sciences.