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Cui F, Xie Z, Yang R, Zhang Y, Liu Y, Zheng H, Han X. Aggregation-induced emission enhancement (AIEE) active bispyrene-based fluorescent probe: "turn-off" fluorescence for the detection of nitroaromatics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 314:124222. [PMID: 38565053 DOI: 10.1016/j.saa.2024.124222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/11/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024]
Abstract
The detection of nitroaromatic explosives in real samples is essential for environmental monitoring because of their strongly powerful nature and wide applications in industries. Aggregation-induced emission enhancement (AIEE) active fluorescent probe has been widely employed to detect nitroaromatic explosives. Hereby, a simple V-shaped bispyrene-based fluorescent probe (called py-o) with AIEE properties was designed and synthesized, which was fully charactered by 1D NMR, ESI, FTIR, and 2D NOESY spectra. The py-o displayed bright blue-green fluorescence excimer emission at 480 nm in DMF/H2O (v/v 1:1). It is observed that the fluorescence excimer emission of py-o at 480 nm was quenched by PA in solution with a quenching constant of 5.45 × 104 M-1, and the limit of detection was approximately 0.139 μM. The details of the sensing mechanism were explained using 1H NMR titrations, Job's plot and Bensi-Hildebrand methods, which revealed a 1:1 binding ratio via the π-π interactions between PA and py-o. Meanwhile, it exhibited outstanding anti-interference ability in the detection of PA when interfering analytes were added under the same conditions. Furthermore, low-cost thin-layer chromatography (TLC) plates coated with py-o were developed as fluorescent tools for naked-eye detection of PA in the solid state. Therefore, this work provides a new method for constructing an AIEE fluorescent probe for the detection of nitroaromatic explosives to utilize in environmental monitoring.
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Affiliation(s)
- Fengjuan Cui
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, PR China.
| | - Zhiyu Xie
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, PR China
| | - Rui Yang
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, PR China
| | - Yu Zhang
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, PR China
| | - Yue Liu
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, PR China
| | - Huiyuan Zheng
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, PR China
| | - Xue Han
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, PR China
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Chen X, Lu W, Lan D, Zhang B, Gu H, Shen M, Li L, Li P. Membrane-Based Pulsed Sampling Method for Extended Dynamic Range of Ion Mobility Spectrometry. SENSORS (BASEL, SWITZERLAND) 2024; 24:3106. [PMID: 38793958 PMCID: PMC11125281 DOI: 10.3390/s24103106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/09/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024]
Abstract
Ion mobility spectrometry (IMS) has been widely studied and applied as an effective analytical technology for the on-site detection of volatile organic compounds (VOCs). Despite its superior selectivity compared with most gas sensors, its limited dynamic range is regarded as a major drawback, limiting its further application in quantitative measurements. In this work, we proposed a novel sample introduction method based on pulsed membrane adsorption, which effectively enhanced IMS's ability to measure analytes at higher concentrations. Taking N-methyl-2-pyrrolidone (NMP) as an example, this new sampling method expanded the dynamic range from 1 ppm to 200 ppm. The working principle and measurement strategy of this sampling method were also discussed, providing new insights for the design and application of IMS-based instruments.
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Affiliation(s)
- Xinzhi Chen
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China
| | - Wencheng Lu
- Suzhou Weimu Intelligent System Co., Ltd., Suzhou 215006, China (L.L.)
| | - Di Lan
- Suzhou Weimu Intelligent System Co., Ltd., Suzhou 215006, China (L.L.)
| | - Bo Zhang
- Suzhou Weimu Intelligent System Co., Ltd., Suzhou 215006, China (L.L.)
| | - Hao Gu
- Suzhou Weimu Intelligent System Co., Ltd., Suzhou 215006, China (L.L.)
| | - Mutong Shen
- Suzhou Weimu Intelligent System Co., Ltd., Suzhou 215006, China (L.L.)
| | - Lingfeng Li
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China
| | - Peng Li
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China
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Klapec DJ, Czarnopys G, Pannuto J. Interpol review of the analysis and detection of explosives and explosives residues. Forensic Sci Int Synerg 2023; 6:100298. [PMID: 36685733 PMCID: PMC9845958 DOI: 10.1016/j.fsisyn.2022.100298] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Douglas J. Klapec
- Arson and Explosives Section I, United States Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives, Forensic Science Laboratory, 6000 Ammendale Road, Ammendale, MD, 20705, USA
| | - Greg Czarnopys
- Forensic Services, United States Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives, Forensic Science Laboratory, 6000 Ammendale Road, Ammendale, MD, 20705, USA
| | - Julie Pannuto
- United States Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives, Forensic Science Laboratory, 6000 Ammendale Road, Ammendale, MD, 20705, USA
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Ghule S, Dash SR, Bagchi S, Joshi K, Vanka K. Predicting the Redox Potentials of Phenazine Derivatives Using DFT-Assisted Machine Learning. ACS OMEGA 2022; 7:11742-11755. [PMID: 35449912 PMCID: PMC9017108 DOI: 10.1021/acsomega.1c06856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
This study investigates four machine-learning (ML) models to predict the redox potentials of phenazine derivatives in dimethoxyethane using density functional theory (DFT). A small data set of 151 phenazine derivatives having only one type of functional group per molecule (20 unique groups) was used for the training. Prediction accuracy was improved by a combined strategy of feature selection and hyperparameter optimization, using the external validation set. Models were evaluated on the external test set containing new functional groups and diverse molecular structures. High prediction accuracies of R 2 > 0.74 were obtained on the external test set. Despite being trained on the molecules with a single type of functional group, models were able to predict the redox potentials of derivatives containing multiple and different types of functional groups with good accuracies (R 2 > 0.7). This type of performance for predicting redox potential from such a small and simple data set of phenazine derivatives has never been reported before. Redox flow batteries (RFBs) are emerging as promising candidates for energy storage systems. However, new green and efficient materials are required for their widespread usage. We believe that the hybrid DFT-ML approach demonstrated in this report would help in accelerating the virtual screening of phenazine derivatives, thus saving computational and experimental costs. Using this approach, we have identified promising phenazine derivatives for green energy storage systems such as RFBs.
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Affiliation(s)
- Siddharth Ghule
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pashan, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Soumya Ranjan Dash
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pashan, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sayan Bagchi
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pashan, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kavita Joshi
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pashan, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kumar Vanka
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pashan, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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