氯化锰与氮硫掺石墨烯量子点的相互作用研究

Research on the Interaction Between Manganese Chloride and Nitrogen-Sulfur Doped Graphene Quantum Dots

锰在维持人体基本的生命活动中起到十分重要的作用,它负责血糖水平和细胞能量管理、生殖功能、消化功能和骨骼生长。但同时过量的锰会对人产生不可逆的后果,如锰中毒、帕金森综合征。通过探究氯化锰与氮硫掺石墨烯量子点之间的相互作用,发现氯化锰浓度与氮硫掺杂石墨烯量子点的荧光强度变化之间存在线性关系,检出限可达到3.042μmol/L。并通过变温实验和热力学计算对作用机理进行了讨论,结果表明氯化锰所引起氮硫掺杂石墨烯量子点荧光强度的降低为动态猝灭过程,且为自发吸热过程。

Manganese plays a very important role in maintaining the basic life activities of the human body,such as responsible for blood sugar levels and cellular energy management,reproductive function,digestive function,and bone growth.But at the same time,excessive manganese will have irreversible consequences for people(manganese poisoning,Parkinson's syndrome).The interaction between manganese chloride and nitrogen-sulfur-doped graphene quantum dots were studied,and results show that there is a linear relationship between manganese chloride and nitrogen-sulfur-doped graphene quantum dots,and the detection limits can reach 3.042μmol/L.Variable temperature experiments and thermodynamic calculations were used to discuss mechanism.Results showed that the decrease of fluorescence intensity of nitrogen and sulfur doped graphene quantum dots caused by manganese chloride is a dynamic quenching process,and also a spontaneous endothermic process.