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Papa P, Zampetti E, Molinari FN, De Cesare F, Di Natale C, Tranfo G, Macagnano A. A Polyvinylpyrrolidone Nanofibrous Sensor Doubly Decorated with Mesoporous Graphene to Selectively Detect Acetic Acid Vapors. SENSORS (BASEL, SWITZERLAND) 2024; 24:2174. [PMID: 38610388 PMCID: PMC11014041 DOI: 10.3390/s24072174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 03/22/2024] [Accepted: 03/24/2024] [Indexed: 04/14/2024]
Abstract
An original approach has been proposed for designing a nanofibrous (NF) layer using UV-cured polyvinylpyrrolidone (PVP) as a matrix, incorporating mesoporous graphene carbon (MGC) nanopowder both inside and outside the fibers, creating a sandwich-like structure. This architecture is intended to selectively adsorb and detect acetic acid vapors, which are known to cause health issues in exposed workers. The nanocomposite MGC-PVP-NFs layer was fabricated through electrospinning deposition onto interdigitated microelectrodes (IDEs) and stabilized under UV-light irradiation. To enhance the adhesion of MGC onto the surface of the nanocomposite polymeric fibers, the layer was dipped in a suspension of polyethyleneimine (PEI) and MGC. The resulting structure demonstrated promising electrical and sensing properties, including rapid responses, high sensitivity, good linearity, reversibility, repeatability, and selectivity towards acetic acid vapors. Initial testing was conducted in a laboratory using a bench electrometer, followed by validation in a portable sensing device based on consumer electronic components (by ARDUINO®). This portable system was designed to provide a compact, cost-effective solution with high sensing capabilities. Under room temperature and ambient air conditions, both laboratory and portable tests exhibited favorable linear responses, with detection limits of 0.16 and 1 ppm, respectively.
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Affiliation(s)
- Paolo Papa
- Institute of Atmospheric Pollution Research (IIA)-CNR, 00010 Montelibretti, RM, Italy; (E.Z.); or (F.N.M.); (F.D.C.)
| | - Emiliano Zampetti
- Institute of Atmospheric Pollution Research (IIA)-CNR, 00010 Montelibretti, RM, Italy; (E.Z.); or (F.N.M.); (F.D.C.)
| | - Fabricio Nicolas Molinari
- Institute of Atmospheric Pollution Research (IIA)-CNR, 00010 Montelibretti, RM, Italy; (E.Z.); or (F.N.M.); (F.D.C.)
- National Institute of Industrial Technology (INTI), Buenos Aires B1650WAB, Argentina
| | - Fabrizio De Cesare
- Institute of Atmospheric Pollution Research (IIA)-CNR, 00010 Montelibretti, RM, Italy; (E.Z.); or (F.N.M.); (F.D.C.)
- Department for Innovation in Biological, Agro-food and Forest Systems (DIBAF), University of Tuscia, 01100 Viterbo, VT, Italy
| | - Corrado Di Natale
- Department of Electronic Engineering (EED), University of Tor Vergata, 00133 Rome, RM, Italy;
| | - Giovanna Tranfo
- Department of Medicine, Epidemiology, Occupational and Environmental Hygiene (DIMEILA)-INAIL, 00144 Monteporzio Catone, RM, Italy;
| | - Antonella Macagnano
- Institute of Atmospheric Pollution Research (IIA)-CNR, 00010 Montelibretti, RM, Italy; (E.Z.); or (F.N.M.); (F.D.C.)
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Das S, Mondal S, Ghosh D. Carbon quantum dots in bioimaging and biomedicines. Front Bioeng Biotechnol 2024; 11:1333752. [PMID: 38318419 PMCID: PMC10841552 DOI: 10.3389/fbioe.2023.1333752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 12/29/2023] [Indexed: 02/07/2024] Open
Abstract
Carbon quantum dots (CQDs) are gaining a lot more attention than traditional semiconductor quantum dots owing to their intrinsic fluorescence property, chemical inertness, biocompatibility, non-toxicity, and simple and inexpensive synthetic route of preparation. These properties allow CQDs to be utilized for a broad range of applications in various fields of scientific research including biomedical sciences, particularly in bioimaging and biomedicines. CQDs are a promising choice for advanced nanomaterials research for bioimaging and biomedicines owing to their unique chemical, physical, and optical properties. CQDs doped with hetero atom, or polymer composite materials are extremely advantageous for biochemical, biological, and biomedical applications since they are easy to prepare, biocompatible, and have beneficial properties. This type of CQD is highly useful in phototherapy, gene therapy, medication delivery, and bioimaging. This review explores the applications of CQDs in bioimaging and biomedicine, highlighting recent advancements and future possibilities to increase interest in their numerous advantages for therapeutic applications.
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Affiliation(s)
- Surya Das
- Department of Chemistry, University of Kalyani, Kalyani, India
| | - Somnath Mondal
- Department of Chemistry, Pennsylvania State University, State College, PA, United States
| | - Dhiman Ghosh
- Department of Chemistry and Applied Biosciences, Zurich, Switzerland
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Array-based sensing and discrimination of segmented Baijiu using organic molecules-regulated PEI@Ag NPs@Ln as fluorescent probes. Food Chem 2023; 417:135888. [PMID: 36917907 DOI: 10.1016/j.foodchem.2023.135888] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/06/2023] [Accepted: 03/04/2023] [Indexed: 03/12/2023]
Abstract
Quickly discriminating different segmented Baijiu can directly control its grade and indirectly affect the quality of the finished Baijiu. A fluorescence sensor array was constructed based on PEI-terminated silver nanoparticles and lanthanide metal ions (PEI@Ag NPs@Ln). Ag NPs were stably dispersed in the PEI-woven network, initially accompanied by excellent fluorescence signals. Organic molecules disrupted the PEI structure and dragged the Ag NPs out. The free Ag NPs sintered or aggregated with the diffusion, resulting in fluorescence quenching. The three lanthanide ions speed up the process, allowing different organic molecules to exhibit more distinct signals. Thus, this sensor was used to map 11 organic molecules' fingerprints and to discriminate segmented Baijiu. The whole process takes only 2 min. With the assistance of pattern recognition, segmented Baijiu from three cellars were successfully discriminated. Fast, effective and simple are highlights, which opens up its practical application potential in the detection field.
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Neumann C, Rosencrantz S, Schmohl A, Alexandra L. Fluorescent melamine-formaldehyde/polyamine coatings for microcapsules enabling their tracking in composites. J Microencapsul 2022; 39:575-588. [PMID: 36251940 DOI: 10.1080/02652048.2022.2137593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 10/13/2022] [Indexed: 12/29/2022]
Abstract
This study aimed the development of fluorescent melamine-formaldehyde (MF)/polyamine coatings for labelling of prefabricated microcapsules and their tracking in composites. The composition of the fluorescent MF coatings was studied by FTIR spectroscopy, thermogravimetric analysis, and elemental analysis. The characteristics of the coatings and its deposition on different surfaces were investigated using optical and fluorescence microscopy and fluorescence spectroscopy. MF prepolymers were polymerised with tri- and polyamines yielding in fluorescent coatings without addition of fluorescent dyes. Both, MF/poly(ethylene imine) and MF/poly(vinyl amine) (PVAm) coated glass beads showed maximum fluorescence at an excitation wavelength of λmax = 360 nm with the emission maxima at λmax = 490 nm and λmax = 410 nm, correspondingly. The MF/PVAm polymer was coated on diuron-poly(methyl methacrylate) microcapsules and tracked in highly filled composites (water-based plaster/paint) to show its applicability. MF/polyamine coatings were identified as promising materials for the fluorescent labelling of prefabricated microcapsules.
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Affiliation(s)
- Christian Neumann
- Department Microencapsulation and Polysaccharide Chemistry, Fraunhofer IAP, Potsdam, Germany
| | - Sophia Rosencrantz
- Biofunctionalized Materials and (Glyco) Biotechnology, Fraunhofer IAP, Potsdam, Germany
| | - Andreas Schmohl
- Department Environment, Hygiene and Sensor Technology, Fraunhofer IBP, Valley, Germany
| | - Latnikova Alexandra
- Department Microencapsulation and Polysaccharide Chemistry, Fraunhofer IAP, Potsdam, Germany
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Acquaye FY, Mahat R, Street S. Synthesis of FePt Nanoparticles by Photoreduction and Chemical Reduction in Poly(ethyleneimine). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11750-11758. [PMID: 34591483 DOI: 10.1021/acs.langmuir.1c01662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Using poly(ethyleneimine) (PEI) polymer substrates, spherical FePt nanoparticles (NPs) with diameter <10 nm have been synthesized by photoreduction and chemical reduction in aqueous media at room temperature. In the photoreduction approach, PEvI acts as both the template into which the metal ions are coordinated and as a reductant when irradiated by ultraviolet light. In the chemical reduction method, PEI acts as only a template, with NaBH4 as the reductant. The as-prepared NPs were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), and vibrating sample magnetometry (VSM). Starting from the same precursor state and relative concentrations, the as-prepared NPs from both methods are spherical, crystalline solid solutions with a chemically disordered face-centered cubic (fcc) structure. The as-prepared NPs from both methods are superparamagnetic with some contribution from a ferromagnetic phase. The photoreduced NPs have broad size distribution of (5 ± 1.0 nm), an expanded lattice (3.913 Å), and relatively lower magnetic moment (0.02 emu/g) compared to the narrower size distribution (4 ± 0.7 nm), shortened lattice (3.890 Å), and a dominant moment (15 emu/g) of the chemically reduced NPs. The difference in the rate of particle formation apparently leads to a low efficiency of FePt NP formation via photoreduction compared to chemical reduction.
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Affiliation(s)
- Francis Y Acquaye
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, United States
| | - Rabin Mahat
- Department of Physics and Astronomy, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Shane Street
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, United States
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A novel cationic surfactant synthesized from carbon quantum dots and the versatility. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ma Y, Zhang H, Cao D, Chen Q, Guan R, Zhou C. Fluorescence resonance energy transfer fluorescent polymer dots without conventional chromophores: Synthesis, emission mechanism and applications as Cu2+ probe and fluorescent ink. CHEMICAL ENGINEERING JOURNAL ADVANCES 2020. [DOI: 10.1016/j.ceja.2020.100046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Si XJ, Wang HL, Wu TH, Wang P. Novel methods for the rapid detection of trace tetracyclines based on the fluorescence behaviours of Maillard reaction fluorescent nanoparticles. RSC Adv 2020; 10:43256-43261. [PMID: 35519723 PMCID: PMC9058211 DOI: 10.1039/d0ra05298a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 11/08/2020] [Indexed: 12/21/2022] Open
Abstract
The Maillard reaction and its fluorescent products have attracted widespread attention in the field of food safety and biology. Herein, the novel Maillard reaction fluorescent nanoparticles (MRFNs) as a fluorescent probe were synthesized via a “green” method with simple technical processes. In addition, the effects of tetracycline (TC) and chlorotetracycline (CTC) representing certain properties of tetracyclines (TCs) on the fluorescence behaviour of MRFNs were studied, respectively. The present study showed that the fluorescence intensity of MRFNs greatly enhanced with a linear increase in the CTC concentration. However, with the gradual increase in the TC concentration, the intensity of MRFNs tended to significantly decrease linearly. Based on this, novel fluorescence analysis methods for the simple and rapid detection of TC and CTC in water bodies were established, respectively. Significantly, the proposed detection methods were successfully adopted for detecting TC and CTC in some environmental water samples. Besides, the possible mechanisms for TC-induced fluorescence quenching and CTC-induced fluorescence enhancement of MRFNs were also discussed, respectively. The Maillard reaction and its fluorescent products have attracted widespread attention in the field of food safety and biology.![]()
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Affiliation(s)
- Xue-Jing Si
- School of Pharmaceutical Sciences, Wenzhou Medical University Wenzhou 325035 China +86-577-86689745 +86-577-86689949
| | - Hong-Ling Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University Wenzhou 325035 China +86-577-86689745 +86-577-86689949
| | - Tun-Hua Wu
- School of Information Engineering, Wenzhou Business College Wenzhou 325035 China
| | - Ping Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University Wenzhou 325035 China +86-577-86689745 +86-577-86689949
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Qiu J, Li Q, Lei N, Chen X. Ionic Self-Assembled Luminescent Nanospheres from Cationic Polyelectrolyte and Eu-Containing Polyoxometalate. ACS OMEGA 2020; 5:6895-6902. [PMID: 32258925 PMCID: PMC7114760 DOI: 10.1021/acsomega.0c00261] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 02/24/2020] [Indexed: 06/11/2023]
Abstract
Using the ionic self-assembly (ISA) strategy to combine Eu-containing polyoxometalates (Eu-POMs) and organic molecules mainly through noncovalent electrostatic interactions can protect Eu-POMs from solvent quenching of luminescence and enhance their processability. For this reason, a cationic polyelectrolyte, branched polyethyleneimine (PEI), and a Eu-POM, Na9(EuW10O36)·32H2O (EuW10), were used here to construct luminescence-enhanced spherical aggregates with diameters ranging from 50 to 200 nm. At a fixed concentration of EuW10, the phase behavior and luminescence properties of the mixture could be modulated by the PEI concentration. Such ISA-induced aggregates could effectively shield water molecules and result in better photophysical properties. Compared to bare EuW10, the absolute quantum yield and lifetime of luminescence for aggregates increased 10 and 5 times, respectively. Meanwhile, the sensitivity of the EuW10 coordination structure to the environment made it possible for obtained aggregates being used to detect either copper cations or permanganate anions due to their strong specific quenching effects to luminescence. Such a new type of luminescent soft material not only provided a reference for exploring the luminescence enhancement mechanism of lanthanide through self-assembly in aqueous solution but also exhibited potential in detection by luminescence analysis.
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Affiliation(s)
- Juan Qiu
- Key
Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of
Education, Jinan 250100, China
| | - Qingrun Li
- Key
Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of
Education, Jinan 250100, China
| | - Nana Lei
- Key
Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of
Education, Jinan 250100, China
- School
of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China
| | - Xiao Chen
- Key
Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of
Education, Jinan 250100, China
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