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Colorimetric and Fluorescent Sensors and Their Application

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".

Deadline for manuscript submissions: 20 January 2026 | Viewed by 1163

Special Issue Editor


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Guest Editor
College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
Interests: fluorescence biosensors; nanoparticles; color visual sensors

Special Issue Information

Dear Colleagues,

Colorimetric and fluorescent sensors have become important analytical tools in various scientific fields due to their remarkable sensitivity, selectivity, low cost, and simplicity of operation. These sensors can detect a wide range of analytes, including metal ions, small molecules, gases, and even biomolecules. As research continues, we can expect to see even more innovative sensors being developed to address new and emerging detection needs.

Dr. Caiping Ding
Guest Editor

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Keywords

  • colorimetric
  • fluorescent
  • sensors
  • biomedical applications
  • environmental monitoring
  • food safety

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Published Papers (1 paper)

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Research

11 pages, 4511 KiB  
Article
A Series of Rare-Earth Metal-Based Coordination Polymers: Fluorescence and Sensing Studies
by Nian-Hao Wang, Jin-Mei Liu, Bin Tan and Zhao-Feng Wu
Sensors 2024, 24(21), 6867; https://doi.org/10.3390/s24216867 - 25 Oct 2024
Viewed by 900
Abstract
Ratiometric fluorescent sensing based on dual-emitting fluorescent coordination polymers (FL-CPs) has attracted intense attention due to their sensing accuracy and easy visualization when compared with sensing relying solely on monochromatic FL-CPs. In this work, a series of rare-earth metal-based CPs, formuled as [(CH [...] Read more.
Ratiometric fluorescent sensing based on dual-emitting fluorescent coordination polymers (FL-CPs) has attracted intense attention due to their sensing accuracy and easy visualization when compared with sensing relying solely on monochromatic FL-CPs. In this work, a series of rare-earth metal-based CPs, formuled as [(CH3)2NH2][Ln(bpdc)2] (Ln3+ = Y3+, Eu3+ and Tb3+, H2bpdc = biphenyl-4,4′-dicarboxylic acid), are presented, which show dual emission aroused from the Ln3+ ions and the inefficient intermolecular energy transfer from ligands to Ln3+ metals. For clarity, the as-made Ln-CPs are named Eu-bpdc, Tb-bpdc, and Y-bpdc based on the corresponding Ln3+. Notably, Eu-bpdc, presented as an example, could be used as FL sensing material ratiometric to Fe3+ ions. The ratio of FL intensity of Eu3+ ions to bpdc2− ligands (I415/I615) showed a good linear relationship with the concentrations of Fe3+ ions. Moreover, the detection process could be visibly monitored through a change from purple to blue when Eu-bpdc was used as an FL proble. This work provides a good example for exploring visibly ratiometric sensors based on FL-CPs. Full article
(This article belongs to the Special Issue Colorimetric and Fluorescent Sensors and Their Application)
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