A turn-on fluorescent probe for Cd2+ detection in aqueous environments based on an imine functionalized nanoscale metal–organic framework

Jintong Wang; Tifeng Xia; Xin Zhang; Qi Zhang; Yuanjing Cui; Yu Yang; Guodong Qian

doi:10.1039/C7RA11162B

A turn-on fluorescent probe for Cd²⁺ detection in aqueous environments based on an imine functionalized nanoscale metal–organic framework†

Jintong Wang,

^a Tifeng Xia,^a Xin Zhang,^a Qi Zhang,^a Yuanjing Cui,

^a Yu Yang

*^a and Guodong Qian

*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, School of Materials Science & Engineering, Zhejiang University, Hangzhou, P. R. China
E-mail: gdqian@zju.edu.cn, yuyang@zju.edu.cn

Abstract

A novel fluorescent probe was synthesized and explored to detect cadmium ions (Cd²⁺) based on an imine functionalized metal–organic framework (MOF). The nanoscale MOF probe (∼100 nm) displayed a turn-on fluorescence in aqueous environments with the addition of Cd²⁺ which could be ascribed to the interaction between the C [double bond, length as m-dash] N group and specific metal ions, presenting a low-toxicity, highly selective and sensitive detection method for Cd²⁺ with a detection limit of 0.336 μM (37.8 ppb) and a broad linear range of 0–500 μM, which is promising for application in intracellular sensing and imaging of Cd²⁺. The probing mechanism was studied and discussed in detail.

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Article information

DOI: https://doi.org/10.1039/C7RA11162B
Article type: Paper
Submitted: 10 Oct 2017
Accepted: 26 Nov 2017
First published: 01 Dec 2017
This article is Open Access

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RSC Adv., 2017,7, 54892-54897

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A turn-on fluorescent probe for Cd²⁺ detection in aqueous environments based on an imine functionalized nanoscale metal–organic framework

J. Wang, T. Xia, X. Zhang, Q. Zhang, Y. Cui, Y. Yang and G. Qian, RSC Adv., 2017, 7, 54892 DOI: 10.1039/C7RA11162B

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