每一种新型发光纳米材料的成功合成和发展，都将促进材料科学、分析化学、食品科学等领域的突飞性进步。半导体聚合物量子点（P-dots）作为一种新兴荧光量子点，荧光性能优异、光稳定性好、无毒无害，在食品分析领域有着很好的应用前景。 针对P-dots合成方法单一、超猝灭原理研究的空白，并着眼于改善我国严重的食品安全问题，本项目提出发展P-dots的可控合成方法，研究P-dots超猝灭现象和相关理论，并基于我们在荧光共轭聚合物传感器研发方面雄厚的工作基础，构筑P-dots食品相关物质的传感新方法，拓展P-dots在食品分析相关领域的应用。如果项目得到资助并顺利进行，研究成果将为基础研究、化学分析、食品质量安全、环境监测以及人类健康改善等诸多领域做出显著贡献。

The discovery and development of a new fluorescent nanomaterial always takes a big breakthrough in material science, analysis chemistry and food science. Semiconducting polymer dots (P-dots), as a novel fluorescent nanomaterial, have many excellent characterizations such as extraordinary fluorescence brightness, excellent photostability and nontoxic features. All these characterizations provide P-dots a bright further in food analysis. However, there were very few P-dots synthesis methods and no research about the superquenching of P-dots was reported. In this project, we will develop various preparation technics of P-dots and study their superqueching phenomenon and mechanism. And we will also establish sensitive detection methods for food related chemical molecules, based on our strong research foundation on fluorescent conjugated polymers. The research results have remarkable contribution on fundamental research, chemical analysis, food safety, environmental monitoring and human health improvement.