超分子组装调控非手性无机纳米材料的圆偏振发光：机理、材料制备及应用探索

Circularly polarized luminescent materials are widely used in three-dimensional display, data storage, asymmetric photocatalysis, biomedicine and other fields. The traditional organic luminescent systems have limited application in circularly polarized luminescent materials because of its poor luminescent stability and complex preparation. Due to the stable luminescence and easy preparation, inorganic luminescent nanomaterials are expected to become a new generation of circularly polarized luminescent materials. However, the luminescent asymmetry factors of most inorganic nanoparticles are negligible, which lead to the silence of circularly polarized luminescence in most inorganic luminescence nanomaterials. In this application, using the supramolecular assembly, we propose a smart system which exhibits chiral supramolecular assembly induced and regulated CPL of inorganic nanoparticles. By introducing chiral self-assembly to inorganic luminescent materials, chiral assembly regulated CPL of inorganic nanoparticles will be obtained. The current work may reveal the molecular mechanisms of self-assembly induced CPL of inorganic nanoparticles, develop a new universal method to prepare inorganic materials with CPL, and try to apply the obtained systems in the asymmetric photocatalytic reaction and biorecognition technology.

圆偏振发光材料在三维显示、数据存储、不对称光催化、生物医学等领域具有广泛应用。传统有机发光体系因在发光稳定性及制备复杂程度等方面的局限，限制了其在圆偏振发光材料中的应用。无机发光纳米材料由于发光稳定、制备简便，可以有效弥补上述局限，有望成为新一代的圆偏振发光材料。然而，由于绝大多数无机发光纳米粒子体系的发光不对称性因子不显著，使得现有的无机纳米材料很难实现圆偏振发光。本申请计划利用超分子自组装的方法，将非手性无机发光纳米材料与有机手性分子共组装，通过超分子手性诱导的作用，实现无机纳米材料的圆偏振发光。本研究计划揭示分子组装体诱导、调控无机纳米粒子发射圆偏振光的机理，发展制备无机圆偏振发光纳米材料的普适性方法，并进一步尝试将该纳米材料应用在不对称光催化反应和生物识别技术中，为无机圆偏振发光纳米材料的制备和应用提供重要的理论依据和实践方案。

圆偏振发光材料在手性激光、数据存储、不对称催化等领域都有潜在应用。无机发光纳米材料因制备简单，无聚集淬灭现象，有望成为新一代的圆偏振发光材料而受到诸多关注。然而由于无机纳米粒子稳定性与自身结构密切相关，利用传统的手性试剂修饰的方法很难实现无机纳米材料的圆偏振发光。本项目利用超分子自组装的方法，将非手性无机发光纳米材料与手性有机分子共组装，通过超分子手性诱导的作用，实现了无机纳米材料的圆偏振发光，揭示了分子组装体诱导、调控无机纳米材料发射圆偏振光的机理，并具有一定的普适性。此外，制备得到的圆偏振发光纳米材料还成功应用在不对称光催化反应中，为无机圆偏振发光纳米材料的制备和应用打下了坚实基础。