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Yao Y, Li D, Jin S, Wang Z, Wang D, Shu Q. Improved corrosion resistance and thermal stability of insensitive NTO explosives by MXene modification in the presence of non-covalent bonds. NEW J CHEM 2022. [DOI: 10.1039/d2nj01579j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strong corrosiveness to metals is the main factor restricting the widespread application of the insensitive explosive 3-nitro-1,2,4-triazole-5-one (NTO).
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Affiliation(s)
- Yuanyuan Yao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Dongze Li
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Shaohua Jin
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zifeng Wang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Dongxu Wang
- School of Physics, Beijing Institute of Technology, Beijing 100081, China
| | - Qinghai Shu
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
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2
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Alam P, Leung NL, Zhang J, Kwok RT, Lam JW, Tang BZ. AIE-based luminescence probes for metal ion detection. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213693] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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3
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Nanbedeh S, Faghihi K. Synthesis and Characterization of New Mesoporous Polyurethane-Nitrogen Doped Carbon Dot Nanocomposites: Ultrafast, Highly Selective and Sensitive Turn-off Fluorescent Sensors for Fe 3+ Ions. J Fluoresc 2021; 31:517-539. [PMID: 33452636 DOI: 10.1007/s10895-020-02680-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 12/28/2020] [Indexed: 12/27/2022]
Abstract
A new fluorescent mesoporous polyurethane (PU) (9) was synthesized by reaction between 2,2'-(methylenebis(4,1-phenylene))bis(5-isocyanatoisoindoline-1,3-dione) (Diisocyanate) (5) and 4,4',4″-((1,3,5-triazine-2,4,6-triyl)tris (azanediyl))triphenol (Triol, TO) (8) (molar ratio 3:2). PU was characterized by using FT-IR, 1H-NMR, XRD, UV-Vis, TGA, Nitrogen adsorption-desorption isotherm, BET, FE-SEM and Photoluminescence (PL) analyses. To the best of our knowledge, this is the first time that a fluorescent polyurethane has been made without the use of commercial fluorescent materials. PU has high fluorescent intensity and it is ultrafast (about few seconds), highly selective and sensitive turn-off fluorescent sensor for Fe3+ ions. This chemosensor exhibited a wide concentration range of (10-250)×10-6 M Fe3+ with quenching efficiency (η) 97.50%. Limit of detection (LOD), limit of quantification (LOQ) and quenching constant (Ksv) values were calculated 10.10×10-6 M, 30.60×10-6 M and 6919.31 M-1, respectively. Nitrogen doped carbon dots (N-doped CDs) as fluorescent nanoparticles and with the aim of improving Fe3+ detecting were synthesized by microwave-assisted and using citric acid monohydrate (10) and ethylenediamine (11) as carbon and nitrogen sources, respectively. Fluorescent nanocomposites (FNCs) were prepared by using casting and in-situ methods. In both methods, two nanocomposites containing 5 and 10%w of N-doped CDs were prepared. FNCs were characterized by using FT-IR, UV-Vis, XRD, TGA, Nitrogen adsorption-desorption isotherm, BET, FE-SEM and PL analyses. All nanocomposites showed better thermal property and sensitivity and lower LOD values in lower concentration of Fe3+ related to PU. Among them, FNC10in exhibited the best results as η, LOD, LOQ, Ksv reached 99.80%, 1.15×10-6 M, 3.48×10-6 M and 53,551.48 M-1, respectively.
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Affiliation(s)
- Saber Nanbedeh
- Department of Chemistry, Faculty of Science, Arak University, Arak, 38156-8-8349, Iran
| | - Khalil Faghihi
- Department of Chemistry, Faculty of Science, Arak University, Arak, 38156-8-8349, Iran.
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Elbasuney S, Baraka A, Gobara M, El-Sharkawy YH. 3D spectral fluorescence signature of cerium(III)-melamine coordination polymer: A novel sensing material for explosive detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 245:118941. [PMID: 32980756 DOI: 10.1016/j.saa.2020.118941] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 08/25/2020] [Accepted: 09/03/2020] [Indexed: 06/11/2023]
Abstract
Hidden or buried explosives are the most common scenario by terrorist attacks; therefore explosive vapour detection is a vital demand. Explosives are electron deficient materials; the vicinity of explosives to fluorescent material can encounter electron migration. This study reports on facile synthesis of cerium (III)-melamine coordination polymer (CeM-CP) with exclusive optical properties. CeM-CP demonstrated novel spectral fluorescence properties over visible and infrared bands when stimulated with UVA LED source at 385 nm of 100 mW power. Stimulated CeM-CP demonstrated unique spectral fluorescence signal at 400, 700, and 785 nm. These fluorescent signals were correlated to cerium coordination with four nitrogen atoms; vacant orbital will be available for electron excitation migration. Spectral fluorescent signals were quenched as CeM-CP was subjected to TNT vapours. Hyperspectral imaging offered 3D plot of fluorescence signature. The main outcome is that complete fluorescence signal attenuation was achieved at 785 nm. CeM-CP could act as as a novel sensing element for explosive vapour detection.
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Affiliation(s)
- Sherif Elbasuney
- Nanotechnology Research Center, Military Technical College, Cairo, Egypt.
| | - Ahmad Baraka
- School of Chemical Engineering, Military Technical College, Cairo, Egypt
| | - Mohamed Gobara
- Department of Chemical Engineering, School of Chemical Engineering, Military Technical College, Cairo, Egypt
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Wen X, Yan L, Fan Z. Multi-responsive fluorescent probe based on AIE for the determination of Fe3+, total inorganic iron, and CN- in aqueous medium and its application in logic gates. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112969] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Liu B, Wang K, Lu H, Huang M, Shen Z, Yang J. Thermally responsive AIE-active polyurethanes based on a tetraaniline derivative. RSC Adv 2020; 10:41424-41429. [PMID: 35516579 PMCID: PMC9057807 DOI: 10.1039/d0ra06193j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 10/31/2020] [Indexed: 11/21/2022] Open
Abstract
Polyurethanes with different soft–hard segment ratios were successfully synthesized, with an aggregation-induced-emission (AIE)-active tetraaniline derivative (NH2–B3–Ani4–NH2) as the hard segment. The resulting polyurethanes exhibited typical AIE features. The fluorescence intensities of polyurethane films changed with heat treatments. The fluorescence intensities of the polyurethane films decreased sharply after quenching treatment, yet their fluorescence intensities exceeded the original intensities of the films after thermal annealing at 80 °C for 24 h. Differential Scanning Calorimetry (DSC) results implied that the melting peaks in polyurethane films disappeared after quenching treatment, but the melting peaks appeared again after thermal annealing. These results proved that the arrangement of the structure had an important effect on the AIE properties of the polyurethane films. Meanwhile, the fluorescence intensities of these polyurethanes decreased with the increase of temperature, indicating that all three polyurethanes exhibited temperature-dependent fluorescent characteristics. Based on the above investigations, the AIE-active polyurethanes may provide a platform for the development of stimuli-responsive fluorescent materials. Polyurethanes with an AIE fluorophore (tetraaniline derivative) are thermo-responsive, demonstrating that AIE-active polyurethane films have promising applications in stimuli-responsive materials.![]()
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Affiliation(s)
- Beibei Liu
- Beijing Key Laboratory for Powder Technology Research & Development, School of Aeronautical Science and Engineering, Beihang University Beijing 100191 China
| | - Kun Wang
- Key Laboratory of Aerospace Advanced Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University Beijing 100191 China
| | - Hao Lu
- Key Laboratory of Aerospace Advanced Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University Beijing 100191 China
| | - Mingming Huang
- Key Laboratory of Aerospace Advanced Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University Beijing 100191 China
| | - Zhigang Shen
- Beijing Key Laboratory for Powder Technology Research & Development, School of Aeronautical Science and Engineering, Beihang University Beijing 100191 China
| | - Jiping Yang
- Key Laboratory of Aerospace Advanced Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University Beijing 100191 China
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7
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A Fractional High-Gain Nonlinear Observer Design—Application for Rivers Environmental Monitoring Model. MATHEMATICAL AND COMPUTATIONAL APPLICATIONS 2020. [DOI: 10.3390/mca25030044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The deterioration of current environmental water sources has led to the need to find ways to monitor water quality conditions. In this paper, we propose the use of Streeter–Phelps contaminant distribution models and state estimation techniques (observer) to be able to estimate variables that are very difficult to measure in rivers with online sensors, such as Biochemical Oxygen Demand (BOD). We propose the design of a novel Fractional Order High Gain Observer (FOHO) and consider the use of Lyapunov convergence functions to demonstrate stability, as it is compared to classical extended Luenberger Observer published in the literature, to study the convergence in BOD estimation in rivers. The proposed methodology was used to estimated Dissolved oxygen (DO) and BOD monitoring of River Culiacan, Sinaloa, Mexico. The use of fractional order in high-gain observers has a very effective effect on BOD estimation performance, as shown by our numerical studies. The theoretical results have shown that robust observer design can help solve problems in estimating complex variables.
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Elbasuney S, El-Sharkawy YH, El-Sayyad GS, Gobara M. Surface modified colloidal silica nanoparticles: Novel aspect for complete identification of explosive materials. Talanta 2020; 211:120695. [PMID: 32070581 DOI: 10.1016/j.talanta.2019.120695] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 12/24/2019] [Accepted: 12/26/2019] [Indexed: 02/04/2023]
Abstract
Terrorism by means of explosives has become a crucial threat. Nanoparticles with distinctive properties can offer novel aspects for instant detection of explosive materials. Common explosives are organic compounds that contain nitro group (NO2) along with carbon and hydrogen elements. This study demonstrates complete identification of nitramine explosives (RDX & HMX) using colloidal silica nanoparticles. Sustainable fabrication of colloidal silica was conducted via hydrothermal processing technique. Explosive identification involves a digestion of the tested material using strong acid. The digestion process results in the development of nitro group and corresponding formaldehyde segment. The identification of the nitro group was performed using colloidal silica nanoparticles functionalized with secondary amine to develop a characteristic dark blue colour. Simultaneous identification of formaldehyde segment was performed using colloidal silica functionalized with aromatic phenol to develop a red colour. This robust explosive detection technology can find wide applications on site where instant identification to assess potential threat is a crucial demand. Thanks to hydrothermal processing, sustainable fabrication and surface modification of colloidal silica particles can be obtained.
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Affiliation(s)
- Sherif Elbasuney
- Head of Nanotechnology Research Center, Military Technical College, Kobry El-Kobba, Cairo, Egypt.
| | - Yasser H El-Sharkawy
- Head of Department of Biomedical Engineering, Military Technical Collage, Kobry Elkoba, Cairo, Egypt
| | - Gharieb S El-Sayyad
- Drug Radiation Research Department, National Centre for Radiation Research and Technology (NCRRT), Egypt; Chemical Engineering Department, Military Technical College, Kobry El-Kobba, Cairo, Egypt
| | - Mohamed Gobara
- Chemical Engineering Department, Military Technical College, Kobry El-Kobba, Cairo, Egypt
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Seo E, Choi J, Lee B, Son YA, Lee KJ. Dye Clicked Thermoplastic Polyurethane as a Generic Platform toward Chromic-Polymer Applications. Sci Rep 2019; 9:18648. [PMID: 31819098 PMCID: PMC6901444 DOI: 10.1038/s41598-019-54832-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 11/18/2019] [Indexed: 01/06/2023] Open
Abstract
Chromic dyes responding against external stimuli are useful in various field of applications especially to colorimetric sensors. However, there have been several limitations in generic application because of its cost, stability and reliability. Here, we introduced highly functionalizable polymeric materials as a supporter covalently modified with controlled amount of chromic dyes. The photochromic organic dye (spiropyran) and highly functional thermoplastic polyurethanes (TPU) have been adopted as a representative example. Conventional polymeric solution processes such as film processing, wet-spinning, electrospinning and ink-writing are readily applicable because dye-TPU maintains its own solubility in various organic solvents. Additionally, since the concentration of dye on TPU are precisely controllable, these dye-TPU solution can be adopted in broad range of specific applications, such as secret coding, smart fabric, and chromic polymeric film layer.
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Affiliation(s)
- Eunbyeol Seo
- Department of Chemical Engineering and Applied Chemistry, College of Engineering, Chungnam National University, 99 Daehak-ro (st), Yuseong-gu, Daejeon, 305-764, South Korea
| | - Jihyun Choi
- Department of Chemical Engineering and Applied Chemistry, College of Engineering, Chungnam National University, 99 Daehak-ro (st), Yuseong-gu, Daejeon, 305-764, South Korea
| | - Bumjae Lee
- Department of Chemical Engineering and Applied Chemistry, College of Engineering, Chungnam National University, 99 Daehak-ro (st), Yuseong-gu, Daejeon, 305-764, South Korea
| | - Young-A Son
- Department of Advanced Materials Engineering, College of Engineering, Chungnam National University, 99 Daehak-ro (st), Yuseong-gu, Daejeon, 305-764, South Korea
| | - Kyung Jin Lee
- Department of Chemical Engineering and Applied Chemistry, College of Engineering, Chungnam National University, 99 Daehak-ro (st), Yuseong-gu, Daejeon, 305-764, South Korea.
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