A dual-function probe based on naphthalene diimide for fluorescent recognition of Hg^sup 2+^ and colorimetric detection of Cu^sup 2

The core-substituted naphthalene diimide (NDI-6) as a dual-function probe was synthesized conve­niently, which can monitor Hg2+ by fluorescent response and serve as a naked-eye detector towards Cu2+. The strong red emission induced by the addition of Hg2+ can be ascribed to the inhibition of the twi...

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Bibliographic Details
Published inSensors and actuators. B, Chemical Vol. B252; p. 1105
Main Authors Zong, Luyi, Wang, Can, Song, Yuchen, Xie, Yujun, Zhang, Pan, Peng, Qian, Li, Qianqian, Li, Zhen
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier Science Ltd 01.11.2017
Subjects
Charge transfer
Colorimetry
Copper
Diimide
Fluorescence
Fluorescent indicators
Inspection
Mercury
Mercury (metal)
Naphthalene
Nondestructive testing
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Summary:The core-substituted naphthalene diimide (NDI-6) as a dual-function probe was synthesized conve­niently, which can monitor Hg2+ by fluorescent response and serve as a naked-eye detector towards Cu2+. The strong red emission induced by the addition of Hg2+ can be ascribed to the inhibition of the twisted intramolecular charge transfer (T1CT) in the excited state, based on the experimental data and theory calculation. Meanwhile, NDI-6 could be used as a reversible fluorescent probe towards Hg2+ with the aid of 1- as test strips, which can be applied into the detection of real samples.
ISSN:0925-4005
1873-3077