Abstract：
Luminescent carbon dots (CDs) are important class of nanomaterials with fantastic photoluminescence (PL) properties, great biocompatibility, extraordinary solubility in water, minimal expense, and so on. There are many methods for their preparation and they are mainly classed into two groups, top-down and bottom-up approaches. In order to understand the origin of fluorescence in quantum CDs, three mechanisms have been proposed namely molecular state, surface state, and quantum confinement phenomenon. Fluorescent CDs have significant application in the fields of biochemical sensing, photocatalysis, bioimaging, delivery of drugs, and other related fields. In this review article the application of quantum dots as detecting component, for the sensing of different targets, has been summed up. In fact, the detection of several analytes including, anions, cations, small molecules, polymers, cells, and microscopic organisms has been discoursed. Moreover, the future aspects of CDs as detecting resources have been explored.
摘要：
发光碳点(CD)是一类重要的纳米材料,具有优异的光致发光(PL)性能,良好的生物相容性，在水中非凡的溶解度，最小的费用，等等。他们的准备方法很多，主要分为两组，自上而下和自下而上的方法。为了了解量子CD中荧光的起源，已经提出了三种机制，即分子状态，表面状态,和量子限制现象。荧光CD在生化传感领域有着重要的应用,光催化,生物成像,运送药物，以及其他相关领域。本文综述了量子点作为检测元件的应用,为了感测不同的目标，已经总结了。事实上,几种分析物的检测，包括，阴离子,阳离子，小分子,聚合物，细胞,微生物已经被讨论过了。此外，已经探索了CD作为检测资源的未来方面。
