Application of Organic Conjugated Materials in Chemosensors

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Materials for Chemical Sensing".

Deadline for manuscript submissions: 30 June 2026 | Viewed by 315

Special Issue Editor

School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
Interests: organic optoelectronics; bionic electronics; flexible electronics; functional coatings
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Special Issue Information

Dear Colleagues,

Organic conjugated materials (OCMs), characterized by their extended π-electron systems, have emerged as a promising class of materials for chemosensors due to their unique electronic structures, distinct optical properties, low-cost fabrication, mechanical flexibility, high tunability through molecular design, soft working temperatures, high sensitivity to diverse environmental stimuli, etc. Versatile signals such as charge transfer and fluorescence enable them to detect varied analytes, including gases (ammonia, nitrogen dioxide, volatile organic compounds (VOCs), etc.), biomarkers (glucose, DNA, proteins, etc.), explosive compounds (2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (DNT), pathogens, etc.), and so on, biomarkers (glucose, DNA, proteins, etc.), explosive compounds (2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (DNT), pathogens, etc.), etc. These features also make them attractive candidates for developing next-generation chemosensors with enhanced performance and broader applicability.

This Special Issue will highlight recent advances in, challenges of, and future prospects of advanced chemical sensing technologies and devices on the basis of OCMs. The submission topic covers broad aspects, including the sensing mechanisms, material design strategies, performance optimization techniques, and device applications of OCMs in small-molecule, assembled, oligomeric, polymeric, metal–organic complex, or composite forms. Both comprehensive review articles and innovative research papers are welcome.

Dr. Shuai Chen
Guest Editor

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Keywords

  • chemosensor
  • biosensor
  • charge transfer
  • fluorescence
  • organic semiconductor
  • conjugated molecule
  • conjugated oligomer
  • conjugated polymer
  • conducting polymer
  • aggregate
  • environmental detection

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Published Papers (1 paper)

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Research

13 pages, 2392 KB  
Article
Construction of Cr-MIL-101@PEDOT/MIP Composite Functionalized Glassy Carbon Electrode for PFOS Electrochemical Detection
by Jingru Liang, Haiying Ming, Yijun Meng, Qingyun Tian, Baoyang Lu, Chuanyi Wang, Haijun Du and Shuai Chen
Chemosensors 2025, 13(11), 378; https://doi.org/10.3390/chemosensors13110378 - 27 Oct 2025
Viewed by 47
Abstract
Perfluorooctanesulfonate (PFOS) is a typical persistent organic pollutant, which presents a significant risk to the ecosystem and human health. Therefore, the development of a highly sensitive and effective detection technique for PFOS has aroused wide concern. In this study, for the mesoporous metal–organic [...] Read more.
Perfluorooctanesulfonate (PFOS) is a typical persistent organic pollutant, which presents a significant risk to the ecosystem and human health. Therefore, the development of a highly sensitive and effective detection technique for PFOS has aroused wide concern. In this study, for the mesoporous metal–organic frameworks (MOFs), Cr-MIL-101 were used as the precursor. And the poly(3,4-ethylenedioxythiophene) (PEDOT) using as molecularly imprinted polymers (MIPs) was loaded on Cr-MIL-101 to form a core–shell structure. The obtained Cr-MIL-101@PEDOT/MIP composites integrate the high specific surface area of Cr-MIL-101 and the specific recognition capability of PEDOT/MIP. The glassy carbon electrode (GCE) interface modified by them can specifically adsorb PFOS through electrostatic interactions, coordination by Cr metal nodes, hydrophobic interaction, and hydrogen bonding, etc. The adsorbed PFOS molecules could block the active sites at the electrode interface, causing the current decay of the redox probe. Following the quantitative analysis of peak current decay values using the Langmuir model and the Freundlich–Langmuir model, a wide detection range (0.1–200 nM) and a low detection limit (0.025 nM) were obtained. Characterization techniques including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), X-ray photoelectron spectroscopy (XPS), and electrochemical methods were employed to validate the fabrication of the composites. Moreover, Cr-MIL-101@PEDOT/MIP/GCE showed satisfactory stability, repeatability, and selectivity, providing an effective method for the detection of PFOS in practical samples, showing a wide prospective application. Full article
(This article belongs to the Special Issue Application of Organic Conjugated Materials in Chemosensors)
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