稀土基手性上转换发光纳米材料的精准构筑

手性材料因其对光的选择性响应而在偏振光学器件、负折射率材料、高灵敏生物检测、防伪等领域有着广泛的应用。稀土纳米材料丰富的上转换发光行为赋予其在光通讯、信息存储、照明、显示以及生物医学近红外第二窗口成像中巨大的前景。因而，开发兼具二者优势的稀土基手性上转换发光纳米材料，探索其在加密光学通讯、信息加密存储、高级防伪等领域不可替代的应用，则具有非常重要的理论与实际意义。遗憾的是，基于稀土纳米材料自身的手性上转换发光至今仍未实现。基于此，本项目拟系统研究如何获得稀土基手性上转换发光纳米材料，进一步通过对稀土纳米材料的合理设计、可控合成、手性光学性能优化及多层次精准构筑，实现稀土基手性上转换光学器件的制作。该项目的顺利开展不仅将为研发新一代稀土产品及其在高端光学领域的应用提供理论指导，也将也有助于提升我们国家在稀土资源前沿研究中的影响力。

Chiral materials are widely employed in polarized optical devices, negative-refracting materials, high-sensitive biodetection, and anti-counterfeiting due to their unique and selective light responses, whereas the rich photon upconversion behavior of rare earth-based nanomaterials has imparted enormous potentials in optical communication, information storage, lighting, display, as well as biomedical imaging in the second near infra-red window. Thus, it would be of great fundamental and applied importance to develop rare earth-based chiral photon upconversion nanomaterials that integrates both advantages, and further explore the irreplaceable applications in encrypted optical communication, encrypted information storage, and advanced anti-counterfeiting. Unfortunately, so far generation of chiral photon upconversion luminescence has not been realized in rare earth-based nanomaterials. Thus, herein we will systematically study how to obtain rare earth-based chiral photon upconversion nanomaterials and further fabricate chiroptics through rational design, controlled synthesis, chiroptical optimization, and multi-level precise construction of rare earth nanomaterials. The successful progress of this project will not only provide fundamental guidance for exploring new-generation rare earth luminescent products and their applications in advanced optics, it will also help to improve our national influence in frontier investigations of rare earth resources.