富含空位缺陷的铜基微纳米材料的设计、构建及其光学特性研究

Over the past decade, the research on micro-nano materials mainly focuses on the impact of its special shape, small size effect and surface effect to its properties. Due to the technical limitations of characterization, the research on the defects of micro-nano crystals is less. Vacancy is a simple defect in real crystal, and has a great relationship with many physical and chemical properties. Research on the relationship between the vacancy formation and performance of micro and macro space and understanding the nature of the material between the detail is a very important. The project intends to explore new methods to design vacancy-rich micro-nano materials prepared by using chemical "top-down" and "bottom-up" routes, and understands this structure but having both vacancy formation mechanisms of micro-nano materials. At the same time, through advanced characterization techniques for vacancy-rich copper-based micro and nano materials characterization and testing. Finally, exploring the microscopic and electron binding, and surface and interface structure of the vacancy-rich copper-based micro-nano materials. Studying their applications in Raman spectroscopy and liquid crystal electro-optical properties, understanding of the laws between the structure and performance, thereby guiding presence of vacancy defects feedback.

近十年来，对于微纳米材料的研究主要集中于其特殊形貌、小尺寸效应及表面效应等对其性能的影响，受表征技术所限，关于微纳米材料中晶体缺陷对其性能的研究相对较少。空位是实际晶体中较为简单常见的一种缺陷，晶体中许多物理化学性质与空位的存在关系极大。详细地研究空位的形成和性质与理解材料的微观和宏观性能之间的关系是一个十分重要和具有实际应用价值的研究课题。本项目拟根据无机微纳米材料已有认知，设计并探索利用化学法“自上而下”与“自下而上”地制备富含空位缺陷的微纳米材料的新途径，认识和理解构筑这种既有空位结构而又具有微纳米尺度的材料的形成机理。同时，通过先进的表征技术对富含空位的铜基微纳米材料进行表征和检测。最后，探索所制备的富含空位缺陷的铜基微纳米结构的微观电子结合和表界面性质，研究它们在拉曼光谱与液晶电光性能中的应用，最终获取结构-性能之间的规律性认识，从而反馈指导存在空位缺陷的微纳米结构的制备。

本项目以Cu2O为研究目标，探索和开发一些富含空位缺陷的铜基微纳米结构可控合成的方法。系统地研究表面活性剂或无机吸附离子的种类、前驱体的种类和浓度、反应温度等因素对铜基材料微纳米结构形成过程的影响规律，实现对空位缺陷的可控创制。并探索所制备的微纳米结构的微观电子结合和表界面性质，研究它们在拉曼光谱与液晶电光性能中的应用，最后获取结构-性能之间的规律性认识，从而反馈指导存在空位缺陷的微纳米结构的制备。本项目的开展不仅能发展富含缺陷的微纳米材料制备新途径，且能为其它金属氧化物的制备和相关研究提供借鉴和指导。