目前，碳纳米点基化学发光在超灵敏分析检测、冷光源等关乎国防、民生的众多领域具有重要的潜在应用。然而所得碳纳米点基化学发光效率低，严重阻碍了其在化学发光分析检测方面的应用。针对以上问题，本项目提出利用碳纳米点自身带隙易调节的特点，以此作为化学发光过程中光发射体和发光标记物，设计并构建草酸酯-过氧化氢-碳纳米点化学发光体系。在该体系中，优化选取草酸酯化学发光中间体，并通过对不同元素的化学含量和内核的共轭程度调控完成对碳纳米点发光带隙调节来实现与碳纳米点光发射体间的能级匹配，解决高能中间体到光发射体间电子和空穴的有效注入这一难题，以此提升该体系化学能到光能的转换效率；同时通过表面基团改性实现对碳纳米点亲水亲油性质以及对待测物质选择性的改善，有望实现碳纳米点基高效化学发光和高灵敏分析检测应用。该项目的开展为推动碳纳米点化学发光体系的发展提供新的思路。

At present, carbon nanodots (CDs) based chemiluminescence (CL) has important potential applications in many fields such as ultra sensitive analysis, cold light source and so on, which really matter to national defense and people's livelihood. However, due to the inefficiency in CL of CDs, there is still lack of significant breakthrough that can make CDs based CL performs high detection sensitivity and selectivity. In view of the above problems, we plan to design and construct an oxalic ester-hydrogen peroxide-CDs CL system, employing CDs as the light emitter and marker by virtue of the easy adjustment of their band gap. In this system, we will select the appropriate oxalate as CL intermediates. At the same time, we will achieve a reasonable energy level matching between CL intermediates and CDs by changing the light emission band gap of CDs, which needs regulating the chemical content of different elements and the conjugation of kernel in CDs. We will solve the problem on the effective injection of the electron and hole from high-energy intermediate to the light emitter in order to improve the efficiency of chemical energy into light energy conversion in this system. Meanwhile, the modification on the surface of CDs though functional groups is applied to achieve proper lipophilic and hydrophilic properties and high selectivity. Finally，we will achieve efficient CL and high sensitive analysis detection based on CDs. This project will provide new ideas for the research and development of CDs based CL system.