Aggregation-induced emission enhancement of yellow photoluminescent carbon dots for highly selective detection of environmental and intracellular copper(Ⅱ) ions

作者：Wenyi Lv; Min Lin; Rongsheng Li; Qianqian Zhang; Hui Liu; Jian Wang^*; Chengzhi Huang^*

来源：Chinese Chemical Letters, 2019, 30(07): 1410-1414.

Carbon dots(CDs)are p repared through a simple one-step hydrothermal treatment of o-phe nylendiamine(OPD)and show yellow photoluminescent(PL)emission under the ultraviolet excitation,which can be further enhanced by Cu2+ ions owing to Cu2+ ions induced aggregation of OPD-CDs through the coordination of Cu2+with amino groups on the surface of OPD-CDs.The aggregation induced emission enhancement(AIEE)property enables it feasible to develop a simple,sensitive and selective method to detect e nvironmental and intracellular copper(Ⅱ)ions.The limit of detection as low as 0.28 μmol/L(3σ/k)and a dynamic range from 0.5 μmol/L to 40 μmol/L make it very easy to detect the copper content in water samples,such as river closure reservoir.Furthermore,fluo re scence imaging of intracellular Cu2+suggests that the AIEE features of OPD-CDs specific to Cu2+ions can be also applied in biological systems.

• 单位
  西南大学