Herein, cyan emitting carbon dots are synthesised by adopting a facile, green and economic route using table sugar as the precursor. The system is adequately characterized by TEM, XRD, XPS, FTIR, Raman spectroscopy, Zeta potential analysis, UV–vis absorbance spectroscopy and Fluorescence spectroscopy. Excitation dependent emission is exhibited by these particles.The luminescence exhibited by these dots is found to be highly sensitive towards a collection of aromatic nitro compounds which enabled their sensing with admirable efficacy. Limits of detection towards the nitro aromatic systems are found to be in the range of 270–1720 Femto molar (fM), which is highly commendable while considering the benchmark values prescribed for the nitro aromaticsin aqueous systems, by the concerned authorities. The proposed carbon dot unit performed well even under complex chemical environments, as illustrated by the negligible interference of common metal salts and bio-moleculesin the sensing action. Besides, the observed sensing trend isscientifically corroborated with the aid ofwidely accepted computational analytical tools, Global reactive descriptors and Donor Acceptor Map (DAM) methods. Interpretation of sensing phenomena in a computational perspective is a novel attempt in the area of fluorimetric sensing, since works in the concerned area seldom seeks the assistance of a scientific MAP or parameter for explaining the sensing action.

此处，通过采用食用糖作为前体的简便，绿色且经济的路线来合成发出青色的碳点。该系统通过TEM，XRD，XPS，FTIR，拉曼光谱，Zeta电位分析，紫外可见吸收光谱和荧光光谱充分表征。这些粒子表现出与激发有关的发射。发现这些点所表现出的发光对芳香族硝基化合物的收集高度敏感，从而使它们具有令人赞叹的功效。发现有关硝基芳族体系的检出限在270–1720 Femto摩尔（fM）的范围内，有关当局考虑到针对硝基芳族化合物在水性体系中规定的基准值时，这是高度值得推荐的。所提出的碳点单元即使在复杂的化学环境下也能表现良好，如常见金属盐和生物分子对传感作用的微不足道的干扰所说明。此外，借助广泛接受的计算分析工具，全局反应性描述符和施主受体图（DAM）方法，科学证实了观察到的传感趋势。在计算角度上解释感测现象是荧光感测领域中的一种新颖尝试，因为相关领域的工作很少寻求科学的MAP或参数的帮助来解释感测动作。借助广泛接受的计算分析工具，全局反应性描述符和施主受体图（DAM）方法，科学证实了观察到的传感趋势。在计算角度上解释感测现象是荧光感测领域中的一种新颖尝试，因为相关领域的工作很少寻求科学的MAP或参数的帮助来解释感测动作。借助广泛接受的计算分析工具，全局反应性描述符和施主受体图（DAM）方法，科学证实了观察到的传感趋势。在计算角度上解释感测现象是荧光感测领域中的一种新颖尝试，因为相关领域的工作很少寻求科学的MAP或参数的帮助来解释感测动作。