Issue 9, 2018, Issue in Progress
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RSC Advances

A dual-emission nano-rod MOF equipped with carbon dots for visual detection of doxycycline and sensitive sensing of MnO4−†

Xin Fu,a   Rui Lv,a   Jian Su,a   Hui Li,a   Boyi Yang,a   Wen Gu*a  and  Xin Liu ORCID logo *a  

* Corresponding authors

a College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, P. R. China
E-mail: liuxin64@nankai.edu.cn, guwen68@nankai.edu.cn

Abstract

Herein, ethanediamine-modified carbon dots (CDs) were encapsulated into luminescent MOF(Eu), which was designed for a dual-emission hybrid material (CDs@MOF(Eu)) with diverse fluorescence applications. This material exhibited high selectivity and sensitivity towards doxycycline. With an increasing concentration of doxycycline, the blue light emission of CDs could be quenched, whereas the red light emission of MOF(Eu) was enhanced. In view of this result, more convenient “test paper” was used first as a new tool for doxycycline detection, the colour of which turned from blue-purple to red as observed by the naked eyes under 365 nm UV-irradiation. This hybrid material also was a probe for sensing MnO4− with a low limit of detection and good anti-interference performance. We propose that CDs can improve detection sensitivity compared with the original MOF(Eu). The possible sensing mechanism was discussed in detail. Importantly, the feasibility of this composite for sensing doxycycline in a simulated biological system and sensing MnO4− in tap water was investigated.

Graphical abstract: A dual-emission nano-rod MOF equipped with carbon dots for visual detection of doxycycline and sensitive sensing of MnO4−

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Article information

DOI
https://doi.org/10.1039/C7RA12252G
Article type
Paper
Submitted
08 Nov 2017
Accepted
11 Jan 2018
First published
25 Jan 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 4766-4772

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A dual-emission nano-rod MOF equipped with carbon dots for visual detection of doxycycline and sensitive sensing of MnO4−

X. Fu, R. Lv, J. Su, H. Li, B. Yang, W. Gu and X. Liu, RSC Adv., 2018, 8, 4766 DOI: 10.1039/C7RA12252G

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