Issue 5, 2022

Bifunctional color-tuning luminescent Ln@Zr-MOFs for white LEDs and sensitive, ultrafast detection of nitrobenzene in aqueous media

Abstract

Rapid and quantitative detection of nitrobenzene (NB) in wastewater is of great significance to protect the natural environment and human health. In this work, bifunctional Ln@Zr-MOFs based on UiO-66 were successfully fabricated by partially replacing terephthalic acid (H2BDC) ligands with m-phthalic acid (m-H2BDC) ligands and post-synthetic modification (PSM) with Ln3+ (Ln3+ = Eu3+, Tb3+). The “antenna effect” of the m-H2BDC ligands makes Ln@Zr-MOFs exhibit the characteristic emissions of Ln3+. By adjusting the amount and type of Ln3+, controllable color-tuning emissions can be easily realized, which endows them with a great application prospect for white LEDs. On the other hand, Eu10@Zr-MOFs can serve as a turn-off fluorescent switch of NB because the red emission from Eu3+ can be easily quenched by NB through a photoinduced electron transfer (PET) process between NB and its ligands, and as a result, NB is successfully recognized. Particularly, Eu10@Zr-MOFs as a fluorescent probe have shown many appealing properties, such as high sensitivity (limit of detection is 1.04 μM, limit of quantification is 3.48 μM, and Ksv = 24459.71 M−1), quick response (less than 60 s), a broad response window (0–180 μM), excellent selectivity, and strong anti-interference ability. The real detection results of NB concentration in natural water samples have demonstrated that the reported Eu10@Zr-MOFs are a potential fluorescent material that can precisely and sensitively perform fluorescence sensing of NB.

Graphical abstract: Bifunctional color-tuning luminescent Ln@Zr-MOFs for white LEDs and sensitive, ultrafast detection of nitrobenzene in aqueous media

Supplementary files

Article information

Article type
Paper
Submitted
30 Oct 2021
Accepted
25 Dec 2021
First published
19 Jan 2022

J. Mater. Chem. C, 2022,10, 1690-1697

Bifunctional color-tuning luminescent Ln@Zr-MOFs for white LEDs and sensitive, ultrafast detection of nitrobenzene in aqueous media

M. Cao, C. Xia, Y. Liu, J. Xia, D. Jiang, G. Zhou, T. Xuan and H. Li, J. Mater. Chem. C, 2022, 10, 1690 DOI: 10.1039/D1TC05243H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements