Metal-Organic Liquid Crystals as Single-Source Precursors for Semiconductor Nanocrystals

金属有机液晶作为半导体纳米晶体的单一来源前体

• 批准号: 1508755
• 负责人: Andrea Tao
• 金额: $ 31.46万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-07-01 至 2018-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1508755&HistoricalAwards=false
• 关键词: Metal; Organic; Liquid; Crystals; Single

The Macromolecular, Supramolecular, and Nanochemistry (MSN) Program is funding Andrea R. Tao of the University of California, San Diego for research to develop new methods to prepare semiconductor nanostructures. These structures have a wide variety of applications in optics, such as wireless telecommunication, remote sensing, and bioimaging. The ability to synthesize them with precisely controlled chemical and physical properties is important to understand how light interacts with matter at the nanoscale and to fully exploit their exciting technological applications. To achieve broader impact, this work integrates research with mentoring, education, and outreach. This work promotes nanoscience education at the pre-college level through research internships and short courses in nanoscience for high school educators, with particular attention given to the inclusion of underrepresented minorities and women.This research aims to discover and develop novel synthetic pathways for achieving new low-dimensional semiconductor nanomaterials with precisely controlled chemical compositions and morphologies. The approach involves the synthesis of metal-organic liquid crystals that are to serve as precursors for the nucleation and growth of copper chalcogenide nanocrystals. These materials are being synthesized for the study of localized surface plasmon resonance in the infrared wavelengths. The carrier density, sizes, and shapes of the resulting nanocrystals are programmed by rationally designing the chemical composition, stoichiometry, molecular structure, and supramolecular order of the liquid crystal precursor. The synthetic techniques developed in this study are also being extended towards the development of an entire toolbox of metal chalcogenide nanomaterials with tailored optical, electronic, and chemical properties.

大分子，超分子和纳米化学（MSN）计划正在资助安德烈R。道的加州大学圣地亚哥分校的研究开发新的方法来制备半导体纳米结构。这些结构在光学领域有着广泛的应用，如无线通信、遥感和生物成像。合成具有精确控制的化学和物理性质的它们的能力对于理解光如何在纳米级与物质相互作用并充分利用其令人兴奋的技术应用非常重要。为了实现更广泛的影响，这项工作将研究与指导，教育和推广相结合。这项工作通过研究实习和面向高中教育工作者的纳米科学短期课程，促进大学预科阶段的纳米科学教育，特别注意纳入代表性不足的少数民族和妇女，这项研究旨在发现和开发新的合成途径，以获得具有精确控制的化学成分和形态的新型低维半导体纳米材料。该方法涉及金属有机液晶的合成，作为铜硫属化物纳米晶体的成核和生长的前体。这些材料的合成是为了研究红外波段的局部表面等离子体共振。通过合理设计液晶前体的化学组成、化学计量、分子结构和超分子有序度，对所得纳米晶体的载流子密度、尺寸和形状进行编程。在这项研究中开发的合成技术也被扩展到开发具有定制的光学，电子和化学性质的金属硫属化物纳米材料的整个工具箱。