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碳量子点的相转移及对金属离子的荧光响应研究

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  • Key Words:碳量子点;;相转移;;荧光光谱;;金属离子

  • Abstract:本研究工作发现采用微波法制备的碳量子点很容易转移到有机溶剂中,并且其荧光强度大幅度提高。从三位荧光光谱看,水相中的碳量子点的最大激发波长和发射波长分别为421nm和505nm,有机相中的碳量子点在370 nm激发时在425nm和400nm附近出现两个发射峰。这种高荧光强度的荧光碳量子点对Fe(II),Fe(III)和Hg(II)具有较强的敏感性,当这些离子存在时出现显著的荧光淬灭现象,因此可以用来建立金属离子的检测体系。

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