Abstract：
A highly affordable, sensitive and portable detection platform for the quantitative identification of sodium copper chlorophyllin (SCC) in food and environment is a crucial need. Even though many carbon dots (CDs) based sensors have been developed, few reports on using CDs as optical probes for SCC detection have been published so far. In this paper, orange luminescent CDs (OLCDs) were prepared via solvothermal method, which have high fluorescence quantum yield (27.20 %) and excellent photostability. OLCDs can detect SCC via inner filter effect (IFE), with fast response, high selectivity, outstanding sensitivity and superior anti-interference ability. Benefiting from the remarkable properties of OLCDs, a portable sensing platform was triumphantly constructed, which facilitated the in situ, real-time quantitative determination of SCC in diverse actual samples, by catching the fluorescence change of OLCDs-based paper sensors via smartphone RGB colorimetric analysis. This first CDs-based smart sensing system displays great potential for quantification of SCC in various fields.
摘要：
一个非常实惠的，建立灵敏、便携的检测平台,对食品和环境中叶绿素铜钠(SCC)的定量鉴定至关重要。尽管已经开发了许多基于碳点（CD）的传感器，到目前为止，关于使用CD作为SCC检测的光学探针的报道很少。在本文中,通过溶剂热法制备了橙色发光CD（OLCDs），具有较高的荧光量子产率(27.20%)和优异的光稳定性。OLCD可以通过内部滤波效应(IFE)检测SCC，快速响应,高选择性,突出的灵敏度和优越的抗干扰能力。受益于OLCDs的卓越性能，一个便携式传感平台成功建造，这促进了原位，实时定量测定不同实际样品中的SCC，通过智能手机RGB比色分析捕获基于OLCD的纸张传感器的荧光变化。这款基于CD的智能传感系统在各个领域的SCC量化方面显示出巨大的潜力。
