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

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作者（2019）在《Aggregation-induced emission enhancement of yellow photoluminescent carbon dots for highly selective detection of environmental and intracellular copper(Ⅱ) ions》一文中研究指出：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.

Abstract

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.

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