金属颗粒具有局域表面等离子体共振(LSPR)特性，本项目拟利用Au、Ag、Cu金属及其合金的LSPR增强碳量子点的发光效率，解决当前碳基材料发光效率较低的难题，促进其在白光LED照明、显示和生物医学等领域的应用。分别采用液相法和微波法合成金属/合金纳米颗粒和碳量子点，通过控制金属的尺寸、形貌、合金组分、包覆介质种类和厚度调节其LSPR吸收特性，通过原料种类和微波工艺参数调节碳量子点的发光特性。通过调控金属的LSPR与碳量子点间的耦合方式和电磁场增强作用，实现碳量子点的荧光增强和电子调控，并将其应用于白光LED和离子/有机物检测。通过实验研究和理论计算相结合，系统研究金属LSPR与碳量子点的能量传递和耦合机制，分析电子在金属和碳量子点间的跃迁规律，确定金属的LSPR对碳量子点的能带结构的影响，阐明金属LSPR对碳量子点的荧光增强作用机理，为碳基纳米发光材料的应用提供理论和技术支撑。

Localized surface plasmon resonance (LSPR) is one of the unique properties of metal nanoparticles. The aim of this project is to enhance the luminescence efficiency of carbon quantum dot by using the LSPR of Au, Ag, Cu metal nanoparticles or their alloy nanoparticles, solve the problem of low quantum yield of carbon-based luminescence materials, and promote its applications in white light emitting diode (LED), display and biomedicine. The metal/alloy nanoparticles and carbon quantum dots will be prepared by liquid phase method and microwave method, respectively. The property of LSPR will be modulated by controlling the size, morphology, alloy constitution, type of coating layer and its thickness. The luminescence spectra of carbon quantum dots will be modulated by changing the raw materials and preparation conditions. The emission enhancement and electron transport regulation of carbon quantum dots will be achieved via the modulation of coupling mode and electromagnetic field enhancement between LSPR of metal and carbon quantum dots, which will be applied to white light emitting diode (LED) and ions/organics detection. To clarify the mechanism of metal enhanced emission for carbon quantum dots, the energy transfer and coupling mechanism between LSPR of metal/alloy nanoparticles and carbon quantum dots will be investigated, and the electrons transition rules will also be studied by combining experiments and theoretical calculations. In addition, the influence of energy band structures for carbon quantum dots will be investigated and the mechanism of fluorescence enhancement via LSPR will be clarified, which will provide a theoretical and technical support for the application of carbon-based luminescence nanomaterials in white LED, biomedicine and other related areas.