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Ye P, Zhang H, Qu J, Wang J, Zhu X, Hu Q, Ma S. Preparation of recyclable fluorescent electrospinning films and their application in distinguishing and quantitatively analyzing acid gases. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Peng Ye
- State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Haitao Zhang
- State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Jianbo Qu
- State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Jian‐Yong Wang
- State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Xiuzhong Zhu
- State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Qingfei Hu
- State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Shanghong Ma
- State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry Qilu University of Technology (Shandong Academy of Sciences) Jinan China
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Li N, Zhao T, Bian P, Liu S, Ma J, Liu B, Jiao T. Gas-Responsive and Self-Powered Visual Composite Langmuir-Blodgett Films for Ultrathin Gas Sensors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:6761-6770. [PMID: 35587383 DOI: 10.1021/acs.langmuir.2c00835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The complex and variable environments are challenging the development of related detection and analysis. Ammonia (NH3) and hydrogen chloride (HCl) gases are both commonly used in industry, but they are considered to be toxic and corrosive substances that can threaten human health and the environment. Therefore, it is necessary here to develop a convenient, sensitive, and reliable sensor device for acid-alkali gas detection. Herein, we propose the synthesis strategy of an ultrathin film gas sensor based on the pH-responsive, self-powered, and visible composite Langmuir-Blodgett (LB) films. In our work, the LB films with nanometric thicknesses are obtained based on the sensitive materials of two novel carbazole structural sensitizers (abbreviated as CS-35 and CS-37) and several dye molecules. The composite LB films are formed with Carbazole samples and dye molecules through hydrogen bonding, π-π stacking, synergistic electrostatic interactions, and hydrophobic interactions, existing as J-aggregate or H-aggregate. The formation of high-quality and uniform Langmuir films is confirmed with transmission electron microscope (TEM), UV-vis spectrum, atomic force microscopy (AFM), and other measurements. In addition, based on the simple protonation and deprotonation, the prepared LB films can be assembled into a visual sensor for the response of pH gases. The response is confirmed by the study of ultraviolet spectroscopy and electrical output in vertical contact separation mode, which potentially unlocks a sustainable future for the application of ultrathin self-powered gas sensors.
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Affiliation(s)
- Na Li
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P. R. China
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Tianyue Zhao
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Pengfei Bian
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Shide Liu
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Jinming Ma
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Bo Liu
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, P. R. China
| | - Tifeng Jiao
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P. R. China
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
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QCM-Based HCl Gas Detection on Dimethylamine-Functionalized Crosslinked Copolymer Films. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10020070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In this work, sensing behaviors and mechanisms of two crosslinked copolymers with dimethylamine and dimethylamide functional groups were compared and investigated for their ability to detect hydrogen chloride (HCl) gas. The crosslinked copolymer films were photopolymerized on quartz crystal electrodes using a micro-contact printing technique. The gas sensing behaviors were analyzed by measuring resonant frequency (Δf) of quartz crystal microbalance (QCM). The HCl binding capacity of photopolymerized films, with a mass between 4.6 and 5.9 μg, was optimized. Under optimized film mass conditions, the poly(2-dimethylaminoethyl methacrylate-co-ethylene glycol dimethacrylate) (DMAEMA-co-EGDMA), poly(DMAEMA-co-EGDMA), film, C2-DMA, showed a 13.9-fold higher binding capacity than the poly(N,N-dimethylacrylamide-co-ethylene glycol dimethacrylate, poly(DMAA-co-EGDMA), film, C0-DMA, during HCl gas adsorption. HCl gas was effectively adsorbed on the C2-DMA film because of the formation of tertiary amine salts through protonation and strong ionic bonding. Furthermore, the C2-DMA film exhibited excellent sensitivity, of 2.51 (ng/μg) (1/ppm), and selectivity coefficient (k* = 12.6 for formaldehyde and 13.5 for hydrogen fluoride) compared to the C0-DMA film. According to the experimental results, and due to its high functionality and stability, the C2-DMA film-coated QC electrode could be used as an HCl gas sensor, with low-cost and simple preparation, in future endeavors.
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Smith KT, Ramsperger CA, Hunter KE, Zuehlsdorff TJ, Stylianou KC. Colorimetric detection of acidic pesticides in water. Chem Commun (Camb) 2021; 58:953-956. [PMID: 34940765 DOI: 10.1039/d1cc06213a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A water-stable, porphyrin-based metal-organic framework (MOF) produces a distinct colour change in response to acids' pKa and concentrations. This colour change is associated with the protonation of the N-atoms within the porphyrin ligand present in the MOF structure. As a proof-of-concept, we demonstrate the use of this MOF for detecting traces of different acidic pesticides present in water samples spontaneously.
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Affiliation(s)
- Kyle T Smith
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, OR, 97331-4003, USA.
| | - Chloe A Ramsperger
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, OR, 97331-4003, USA.
| | - Kye E Hunter
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, OR, 97331-4003, USA.
| | - Tim J Zuehlsdorff
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, OR, 97331-4003, USA.
| | - Kyriakos C Stylianou
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, OR, 97331-4003, USA.
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Li Y, Zhang Z, Fu Z, Wang D, Wang C, Li J. Fluorescence response mechanism of green synthetic carboxymethyl chitosan-Eu 3+ aerogel to acidic gases. Int J Biol Macromol 2021; 192:1185-1195. [PMID: 34678380 DOI: 10.1016/j.ijbiomac.2021.10.073] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 10/07/2021] [Accepted: 10/09/2021] [Indexed: 01/16/2023]
Abstract
Industrial waste acidic gases are huge hazards to the environment and human health, so a material that can detect and remove them is needed. In this paper, CM chitosan-Eu3+ fluorescence aerogel was prepared via a green method by combining the carboxymethyl chitosan biomass polymer with Eu3+ ions, the structure and properties of this aerogel were characterized by SEM, TG, and stress-strain curves. The coordination of Eu3+ ions and carboxymethyl chitosan was analyzed with XPS and the difference in luminescence intensity of aerogel prepared at different pH values was analyzed. The monitoring of the aerogels revealed different responses to different acidic gases, and the fluorescence intensity of the aerogel showed a linear decrease with the adsorbed hydrogen chloride gas (HCl), while acetic acid gas (HAc) enhanced fluorescence. The adsorption system of the CM chitosan-Eu3+ aerogel was simulated using pseudo-second-order kinetics, which showed that the maximum adsorption capacity of HCl is 9.16 mmol/g. The different response mechanisms of HCl and HAc gas were analyzed with FT-IR, fluorescence lifetime imaging and Judd-Ofelt theory. This fluorescence aerogel was found to have potential applications in ensuring industrial production safety.
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Affiliation(s)
- Yuanhang Li
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Northeast Forestry University, Harbin 150040, China; College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
| | - Zhiyuan Zhang
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Northeast Forestry University, Harbin 150040, China; College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
| | - Zhengquan Fu
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Northeast Forestry University, Harbin 150040, China; College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
| | - Di Wang
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Northeast Forestry University, Harbin 150040, China; College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
| | - Chengyu Wang
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Northeast Forestry University, Harbin 150040, China; College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
| | - Jian Li
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Northeast Forestry University, Harbin 150040, China; College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
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Hu M, Yin L, Zhou H, Wu L, Yuan K, Pan B, Zhong Z, Xing W. Manganese dioxide-filled hierarchical porous nanofiber membrane for indoor air cleaning at room temperature. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118094] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Chen Y, Zhang W, She C, Li G, Zhang L, Liu S, Cheng Y, Jing C, Chu J. Sodium citrate doped polypyrrole/PS glass capillary tube sensor for ultra-small volume HCl gas detection. RSC Adv 2019; 9:36351-36357. [PMID: 35540569 PMCID: PMC9074923 DOI: 10.1039/c9ra04687a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 10/24/2019] [Indexed: 11/21/2022] Open
Abstract
A sodium citrate (SC) doped polypyrrole (PPy)/PS capillary sensor was prepared for ultra-small volume HCl gas detection. A PS film was formed in advance on the inner wall of a silica glass capillary tube, which enabled us to prepare a high-qualified PPy sensitive film inside the tube. The crystallinity, morphology, microstructure and carrier transport properties of the PPy film were characterized by XRD, SEM, FTIR and Hall effect system, respectively. The results indicated that the as-prepared tube sensor sample was able to detect 0.2 mL 30 ppm HCl gas while the plane-shaped PPy/PS sensor failed to probe. The improvement of sensing properties was attributed to the trend of crystallinity, pore (or gap) morphology and the long-narrow gas cell. The tube-like gas cell and the featured PPy/PS film of the tube sample contribute to sensing the small volume of HCl gas, which may be applied in breath analysis for potential nonintrusive disease diagnosis.
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Affiliation(s)
- Yuxi Chen
- Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China .,Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China
| | - Wenqian Zhang
- Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China .,Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China
| | - Changkun She
- Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China
| | - Guishun Li
- Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China .,Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China
| | - Lihua Zhang
- Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China .,Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China
| | - Shaohua Liu
- Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China
| | - Ya Cheng
- The Extreme Optoelectromechanics Laboratory, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China
| | - Chengbin Jing
- Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China .,Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China
| | - Junhao Chu
- Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China .,Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Materials, School of Physics and Electronic Science, East China Normal University 500 Dongchuan Road Shanghai 200241 China
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Avossa J, Paolesse R, Di Natale C, Zampetti E, Bertoni G, De Cesare F, Scarascia-Mugnozza G, Macagnano A. Electrospinning of Polystyrene/Polyhydroxybutyrate Nanofibers Doped with Porphyrin and Graphene for Chemiresistor Gas Sensors. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E280. [PMID: 30781545 PMCID: PMC6409903 DOI: 10.3390/nano9020280] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 02/11/2019] [Accepted: 02/12/2019] [Indexed: 11/16/2022]
Abstract
Structural and functional properties of polymer composites based on carbon nanomaterials are so attractive that they have become a big challenge in chemical sensors investigation. In the present study, a thin nanofibrous layer, comprising two insulating polymers (polystyrene (PS) and polyhydroxibutyrate (PHB)), a known percentage of nanofillers of mesoporous graphitized carbon (MGC) and a free-base tetraphenylporphyrin, was deposited onto an Interdigitated Electrode (IDE) by electrospinning technology. The potentials of the working temperature to drive both the sensitivity and the selectivity of the chemical sensor were studied and described. The effects of the porphyrin combination with the composite graphene⁻polymer system appeared evident when nanofibrous layers, with and without porphyrin, were compared for their morphology and electrical and sensing parameters. Porphyrin fibers appeared smoother and thinner and were more resistive at lower temperature, but became much more conductive when temperature increased to 60⁻70 °C. Both adsorption and diffusion of chemicals seemed ruled by porphyrin according its combination inside the composite fiber, since the response rates dramatically increased (toluene and acetic acid). Finally, the opposite effect of the working temperature on the sensitivity of the porphyrin-doped fibers (i.e., increasing) and the porphyrin-free fibers (i.e., decreasing) seemed further confirmation of the key role of such a macromolecule in the VOC (volatile organic compound) adsorption.
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Affiliation(s)
- Joshua Avossa
- Institute of Atmospheric Pollution Research⁻National Research Council (IIA-CNR), Research Area of Rome 1, Via Salaria km 29.300, 00016 Monterotondo, Italy.
| | - Roberto Paolesse
- Institute of Atmospheric Pollution Research⁻National Research Council (IIA-CNR), Research Area of Rome 1, Via Salaria km 29.300, 00016 Monterotondo, Italy.
- Department of Chemical Science and Technology, University of Tor Vergata, Via della Ricerca Scientifica 00133 Rome, Italy.
| | - Corrado Di Natale
- Institute of Atmospheric Pollution Research⁻National Research Council (IIA-CNR), Research Area of Rome 1, Via Salaria km 29.300, 00016 Monterotondo, Italy.
- Department of Electronic Engineering, University of Tor Vergata, Via del Politecnico 1, 00133 Rome, Italy.
| | - Emiliano Zampetti
- Institute of Atmospheric Pollution Research⁻National Research Council (IIA-CNR), Research Area of Rome 1, Via Salaria km 29.300, 00016 Monterotondo, Italy.
| | - Giovanni Bertoni
- Institute of Materials for Electronics and Magnetism⁻National Research Council (IMEM-CNR), Parco Area delle Scienze 37/A, 43124 Parma, Italy.
| | - Fabrizio De Cesare
- Institute of Atmospheric Pollution Research⁻National Research Council (IIA-CNR), Research Area of Rome 1, Via Salaria km 29.300, 00016 Monterotondo, Italy.
- Department for Innovation in Biological, Agro-food and Forest Systems (DIBAF), Via S. Camillo de Lellis, 00100 Viterbo, Italy.
| | - Giuseppe Scarascia-Mugnozza
- Department for Innovation in Biological, Agro-food and Forest Systems (DIBAF), Via S. Camillo de Lellis, 00100 Viterbo, Italy.
| | - Antonella Macagnano
- Institute of Atmospheric Pollution Research⁻National Research Council (IIA-CNR), Research Area of Rome 1, Via Salaria km 29.300, 00016 Monterotondo, Italy.
- Department for Innovation in Biological, Agro-food and Forest Systems (DIBAF), Via S. Camillo de Lellis, 00100 Viterbo, Italy.
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Yew CHT, Azari P, Choi JR, Li F, Pingguan-Murphy B. Electrospin-coating of nitrocellulose membrane enhances sensitivity in nucleic acid-based lateral flow assay. Anal Chim Acta 2018; 1009:81-88. [PMID: 29422135 DOI: 10.1016/j.aca.2018.01.016] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 01/05/2018] [Accepted: 01/10/2018] [Indexed: 11/18/2022]
Abstract
Point-of-care biosensors are important tools developed to aid medical diagnosis and testing, food safety and environmental monitoring. Paper-based biosensors, especially nucleic acid-based lateral flow assays (LFA), are affordable, simple to produce and easy to use in remote settings. However, the sensitivity of such assays to infectious diseases has always been a restrictive challenge. Here, we have successfully electrospun polycaprolactone (PCL) on nitrocellulose (NC) membrane to form a hydrophobic coating to reduce the flow rate and increase the interaction rate between the targets and gold nanoparticles-detecting probes conjugates, resulting in the binding of more complexes to the capture probes. With this approach, the sensitivity of the PCL electrospin-coated test strip has been increased by approximately ten-fold as compared to the unmodified test strip. As a proof of concept, this approach holds great potential for sensitive detection of targets at point-of-care testing.
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Affiliation(s)
- Chee-Hong Takahiro Yew
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; Bioinspired Engineering and Biomechanics Centre (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Pedram Azari
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; Centre of Applied Biomechanics, Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Jane Ru Choi
- Department of Mechanical Engineering, University of British Columbia, 2054-6250 Applied Science Lane, Vancouver BC V6T 1Z4, Canada
| | - Fei Li
- Bioinspired Engineering and Biomechanics Centre (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China; The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China.
| | - Belinda Pingguan-Murphy
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; Centre for the Initiation of Talent and Industrial Training (CITra), University of Malaya 50603 Kuala Lumpur, Malaysia.
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Xu N, Wang RL, Li DP, Zhou ZY, Zhang T, Xie YZ, Su ZM. Continuous detection of HCl and NH3 gases with a high-performance fluorescent polymer sensor. NEW J CHEM 2018. [DOI: 10.1039/c8nj02344a] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel fluorescent triazine-based covalent organic polymer (COP-1) sensor for HCl and NH3 gases has been designed and synthesized.
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Affiliation(s)
- Ning Xu
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo 255049
- People's Republic of China
| | - Rui-Lei Wang
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo 255049
- People's Republic of China
| | - Dong-Peng Li
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo 255049
- People's Republic of China
| | - Zi-Yan Zhou
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo 255049
- People's Republic of China
| | - Tian Zhang
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo 255049
- People's Republic of China
| | - Yu-Zhong Xie
- Department of Chemistry
- Yanbian University
- Yanji 133002
- People's Republic of China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- People's Republic of China
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