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Fluorescence Detection with Molecularly Imprinted Sensors

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Applied Chemistry".

Deadline for manuscript submissions: 31 July 2024 | Viewed by 793

Special Issue Editors


E-Mail Website
Guest Editor
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
Interests: adsorption; membrane separation; molecularly imprinted technology; extraction; polymerization

E-Mail Website
Guest Editor
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
Interests: adsorption; membrane separation; molecularly imprinted technology; extraction; polymerization

Special Issue Information

Dear Colleagues,

As mimics of natural receptors, molecular imprinting techniques are well known for their satisfied stability, high sensitivity, and excellent selectivity; as such, they are widely applied to various areas of analysis. The latest decade has witnessed great achievements in imprinting techniques, from simple molecular/ion detection to efficient cell recognition, and both highly selective and fast detection techniques have been realized.

This Special Issue aims to strengthen and improve the knowledge and understanding of the latest progresses, breakthroughs, challenges, and future directions of molecular/ion imprinting techniques used in the detection of high-value strategic metals, the rapid detection of toxic substances in water bodies, medical tests, and so on. Novel fluorescent test strips and fluorescent sensors (polymers/membrane/films) are all inclusive and encouraged. In addition, novel functional imprinting monomers, efficient green imprinting polymerization methods, the effective construction of imprinting recognition sites, and other corresponding aspects received significant attention. Articles on the characterization methods of imprinted materials, the simulation of imprinting sites and their recognition mechanisms, and the practical application of fluorescent imprinted sensors are also welcome. The main types of articles include research articles and review articles.

Dr. Minjia Meng
Dr. Yan Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • molecular imprinting techniques
  • fluorescent test strips
  • fluorescent sensors
  • fluorescent imprinted membranes
  • selective detection

Published Papers (1 paper)

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Research

16 pages, 6248 KiB  
Article
Enhanced Molecularly Imprinted Fluorescent Test Strip for Rapid and Visual Detection of Norfloxacin via a Smartphone
by Bo Hu, Wenshi Zhao, Li Chen, Yang Liu, Zhongfei Ma, Yongsheng Yan and Minjia Meng
Molecules 2024, 29(3), 661; https://doi.org/10.3390/molecules29030661 - 31 Jan 2024
Viewed by 679
Abstract
Paper-based test strips with on-site visual detection have become a hot spot in the field of target detection. Yet, low specific surface area and uneven deposition limit the further application of test strips. Herein, a novel “turn-on” ratio of molecularly imprinted membranes (Eu@CDs-MIMs) [...] Read more.
Paper-based test strips with on-site visual detection have become a hot spot in the field of target detection. Yet, low specific surface area and uneven deposition limit the further application of test strips. Herein, a novel “turn-on” ratio of molecularly imprinted membranes (Eu@CDs-MIMs) was successfully prepared based on a Eu complex-doped polyvinylidene fluoride membrane for the selective, rapid and on-site visual detection of norfloxacin (NOR). The formation of surface-imprinted polymer-containing carbon dots (CDs) improves the roughness and hydrophilicity of Eu@CDs-MIMs. Fluorescence lifetimes and UV absorption spectra verified that the fluorescence enhancement of CDs is based on the synergistic effect of charge transfer and hydrogen bonding between CDs and NOR. The fluorescent test strip showed a linear fluorescent response within the concentration range of 5–50 nM with a limit of detection of 1.35 nM and a short response time of 1 min. In comparison with filter paper-based test strips, Eu@CDs-MIMs exhibit a brighter and more uniform fluorescent color change from red to blue that is visible to the naked eye. Additionally, the applied ratio fluorescent test strip was combined with a smartphone to translate RGB values into concentrations for the visual and quantitative detection of NOR and verified the detection results using high-performance liquid chromatography. The portable fluorescent test strip provides a reliable approach for the rapid, visual, and on-site detection of NOR and quinolones. Full article
(This article belongs to the Special Issue Fluorescence Detection with Molecularly Imprinted Sensors)
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