Journal ArticleDOI
Fluorescent Chemosensor for Dual-Channel Discrimination between Phosgene and Triphosgene
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TLDR
A novel fluorescent chemosensor, Phos-4, has been constructed with 1,8-naphthalimide as the fluorophore and 2-(2-aminophenyl)imidazol as the recognition sites for discrimination between phosgene and triphosgenes in a dual-channel mode for the first time.Abstract:
As highly toxic and accessible chemical reagents, phosgene and triphosgene have become a serious threat to public safety. So, it is highly desirable to develop facile methods to detect and recognize them. In this article, a novel fluorescent chemosensor, Phos-4, has been constructed with 1,8-naphthalimide as the fluorophore and 2-(2-aminophenyl)imidazol as the recognition sites for discrimination between phosgene and triphosgene in a dual-channel mode for the first time. Owing to the difference in electrophilicity between chlorocarbonyl and trichloromethoxycarbonyl, the sensing reaction of Phos-4 with phosgene undergoes two carbamylations to afford a cyclic product with green fluorescence, and only one carbamylation occurs for triphosgene to form a noncyclic product with blue fluorescence. The sensor Phos-4 exhibits high sensitivity (the limit of detection, 3.2 nM, for phosgene, and 1.9 nM, for triphosgene) and high selectivity in solutions. Furthermore, facile test papers containing Phos-4-embedded nanofibrous membrane have been fabricated by the electrospinning technology. The test papers can provide visual and selective detection of phosgene with a lower limit of detection (42 ppb) and a faster response (≤10 s) in the gas phase over those in solutions. The test paper with Phos-4 is promising to be a practical detection tool of gaseous phosgene.read more
Citations
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Journal ArticleDOI
Recent progress in fluorescent probes for detection of carbonyl species: Formaldehyde, carbon monoxide and phosgene
TL;DR: In this paper, the most significant developments in fluorescent probes for the detection of the carbonyl species formaldehyde, carbon monoxide and phosgene in recent years, with a special emphasis on their mechanisms and applications.
Journal ArticleDOI
1,8-Naphthalimide-based fluorescent chemosensors: recent advances and perspectives
Hong-Qiang Dong,Tai-Bao Wei,Xiao-Qiang Ma,Qing-Yu Yang,Yun-Fei Zhang,Yu-Jiao Sun,Bingbing Shi,Hong Yao,You-Ming Zhang,Qi Lin +9 more
TL;DR: In this paper, a review mainly focuses on 1,8-naphthalimide and its derivatives in ion detection, molecular recognition, material applications, and bioimaging in the past five years.
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Design strategy and bioimaging of small organic molecule multicolor fluorescent probes
TL;DR: A design strategy for multicolor fluorescent probes and its application in biological imaging are summarized, providing a systematic plan for future research on fluorescent probes functionalized by small organic molecules.
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Ultrasensitive, Specific, and Rapid Fluorescence Turn-On Nitrite Sensor Enabled by Precisely Modulated Fluorophore Binding.
TL;DR: In this study, a probe with specific fluorescence properties and nitrite detection ability is designed by precisely modulating benzothiazole binding sites, which is highly applicable for the rapid on‐site and semiquantitative measurement of nitrite.
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An AIE+TICT activated colorimetric and ratiometric fluorescent sensor for portable, rapid, and selective detection of phosgene
TL;DR: In this article, a ratiometric and colorimetric fluorescent sensor TPE-CI was constructed with the combination of the TICT based 3-benzo[d]imidazole-chromen-2-imine unit and AIE based tetraphenylethene (TPE) unit.
References
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Journal ArticleDOI
Triphosgene, a Crystalline Phosgene Substitute
Heiner Eckert,Barbara Forster +1 more
TL;DR: In this article, the vapor diffusion method was used to grow colorless crystals suitable for X-ray crystallography, which were obtained by slow evaporation of a chloroform solution of 8 at room temperature.
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Handbook of toxicology of chemical warfare agents
TL;DR: Satoh et al. as mentioned in this paper presented a comprehensive look at all aspects of chemical warfare toxicology in one reference work, including individual toxicants, target organ toxicity, major incidents, toxic effects in humans, animals and wildlife, biosensors, biomarkers, on-site and laboratory analytical methods, decontamination and detoxification procedures, prophylactic, therapeutic and countermeasures, and the role of homeland security.
Journal ArticleDOI
A Fluorescent Sensor for Dual-Channel Discrimination between Phosgene and a Nerve-Gas Mimic
TL;DR: A o-phenylenediamine-pyronin linked dye that is capable of both fluorogenic and colorimetric discrimination between phosgene and the prototypical nerve-agent mimic, diethyl chlorophosphate (DCP) in the solution or gas phase is designed.
Journal ArticleDOI
Recent Advances in the Development of Chromophore-Based Chemosensors for Nerve Agents and Phosgene
Liyan Chen,Di Wu,Juyoung Yoon +2 more
TL;DR: This review describes in a comprehensive manner recent progress that has been made on the development of chromophore-based chemosensors for detecting nerve agents (mimic) and phosgene.
Journal ArticleDOI
Electrospun Nanofibrous Film Doped with a Conjugated Polymer for DNT Fluorescence Sensor
TL;DR: In this paper, an electrospun nanofibrous film doped with a fluorescent conjugated polymer P was developed as a sensory device for detection of the explosive 2,4-dinitrotoluene (DNT).