项目名称: 多酸-量子点纳米材料的化学合成及发光性质研究
项目编号: No.U1504201
项目类型: 联合基金项目
立项/批准年度: 2016
项目学科: 数理科学和化学
项目作者: 王冠
作者单位: 河南大学
项目金额: 27万元
中文摘要: 多金属氧酸盐的光电性能一直受到科研工作者的广泛关注,随着能源与信息技术的高速发展,对多酸化学的研究提出了新的要求和挑战,例如研发高效、廉价、性能稳定、环境友好的新型发光材料等。目前关于多酸发光材料的报道,多是利用稀土或有机配体的发光,受二者在多酸中含量较低,且荧光容易被羟基基团淬灭,同时激发波长较短等因素的影响,化合物距实际应用还有一定距离。. 本项目针对当前多酸化学的发展研究方向,拟通过分子设计与合成技术同纳米制备技术相结合,以能量转移、性能互补与耦合为指导思想,增强并调控多酸基纳米材料的发光性能为直接目标,研究开发尺寸、结构及表面修饰分子可控的量子点与多酸相结合的新材料的制备方法和工艺,研究不同结构和类型的多酸、量子点之间的相互作用,以及对最终材料性能的影响规律,为实现多酸纳米发光材料的应用提供材料基础和新的可能性。
中文关键词: 多金属氧酸盐;量子点;纳米材料;光致发光
英文摘要: The optoelectronic properties of polyoxometalates (POMs) have attracted researchers’ extensive attention in the past few decades. New requirements and challenges on POMs chemistry are emerging with the high development of the energy and information technology, e.g., fluorescent materials with high efficiency, high stability and environment friendly. However, most of the reported fluorescent POMs are lanthanide derivatives or their composites until now. Due to the content of lanthanide and ligand is rare, the performance of relevant material is not good enough. . Aiming at the developing plan and orientation on POMs chemistry, directed by the energy transfer and coupling idea, and in order to achieve the enhanced and tailorable fluorescent properties, this program will focus on (1) developing methods and technique to prepare POMs based materials modified by quantum dots (QDs) tunable on size, nanostructure and surface modification, (2) investigating the relationships between the POMs-QDs materials and the fluorescent properties. This research will provide abundant new possibilities for the fluorescent POMs adopting QDs as modified materials.
英文关键词: Polyoxometalates;Quantum Dots;Nanomaterials;photoluminescence