碳量子点合成及其在食品检测中的应用

碳量子点(carbon dots,CDs)作为一类新型的荧光纳米材料,具备很多优良的光学特性。相比于半导体量子点,其毒性低、生物相容性好、稳定性与抗光漂白性更高,这些优良的性质使其在检测食品中重金属、抗生素、病原菌、农药残留与违禁添加剂以及营养功能成分等方面有很好的发展前景。近年来,有关CDs的文献综述着重于总结其合成与光学性质,鲜有关于CDs在食品检测中的应用。本文介绍CDs的光学性质与合成方法,重点综述CDs在食品检测中的应用,并提出未来CDs的发展趋势。

Synthesis of Carbon Dots and Its Applications in Food Detection

As a new type of fluorescent nanomaterial, carbon dots (CDs) possess a number of unique optical properties. Compared with semiconductor quantum dots, some advantages of CDs, including lower toxicity, higher biocompatibility, higher photostability and stronger anti-photobleaching effect, are attractive in various fields. Interestingly, increasing attention is attracted to the detection of heavy metals, antibiotics, pathogenic bacteria, pesticide residues and banned additives, and nutritional and functional components in foodsusing CDs nowadays. Recently, the synthesis and optical properties of CDs have been reviewedmany researchers, but there are few reviews that focus on the application of CDs in food detection. This article briefly reviews the optical properties and synthesis of CDs, with emphasis on its applications in food detection. Meanwhile, the future trend of carbon dots is also discussed.