Trace Detection of High Explosives with Nanomaterials

Miao, Wujian; Ge, Cunwang; Parajuli, Suman; Shi, Jing; Jing, Xiaohui

doi:10.1002/9783527632015.ch7

Cited by 5 publications

(5 citation statements)

References 179 publications

(97 reference statements)

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“…In this equation, γ represents the quenching efficiency, F 0 is the fluorescence intensity at time t in the absence of a quencher, and F 0 is the fluorescence intensity of the film at time t. If the fluorescence quenching efficiency is greater than the upper limit for methanol detection, the detection limits for NACs can be inferred using Equation (1).…”

Section: Calculationmentioning

confidence: 99%

“…The escalating global threats of terrorism and the potential public safety risks posed by military explosives have instigated extensive research and innovation in explosive detection technologies [1,2]. The pressing demand for national defense security has stimulated profound investigations and advancements in explosive detection technologies to effectively address these challenges [3].…”

Section: Introductionmentioning

confidence: 99%

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Sensitive Detection of Trace Explosives by a Self-Assembled Monolayer Sensor

Liu,

Ali,

Liu

et al. 2023

Micromachines

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Fluorescence probe technology holds great promise in the application of trace explosive detection due to its high sensitivity, fast response speed, good selectivity, and low cost. In this work, a designed approach has been employed to prepare the TPE-PA-8 molecule, utilizing the classic aggregation-induced emission (AIE) property of 1,1,2,2-tetraphenylethene (TPE), for the development of self-assembled monolayers (SAMs) targeting the detection of trace nitroaromatic compound (NAC) explosives. The phosphoric acid acts as an anchoring unit, connecting to TPE through an alkyl chain of eight molecules, which has been found to play a crucial role in promoting the aggregation of TPE luminogens, leading to the enhanced light-emission property and sensing performance of SAMs. The SAMs assembled on Al2O3-deposited fiber film exhibit remarkable detection performances, with detection limits of 0.68 ppm, 1.68 ppm, and 2.5 ppm for trinitrotoluene, dinitrotoluene, and nitrobenzene, respectively. This work provides a candidate for the design and fabrication of flexible sensors possessing the high-performance and user-friendly detection of trace NACs.

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Section: Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sensitive Detection of Trace Explosives by a Self-Assembled Monolayer Sensor

Liu,

Ali,

Liu

et al. 2023

Micromachines

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“…Explosive substances are categorized in four major classes: nitrate esters, nitroamines, nitroaromatics and their peroxides [ 142 , 143 ]. Majority of currents analytical approaches are based on identification of structural carbon and nitrogen and are challenging in case of peroxides e.g., well known triacetone triperoxide.…”

Section: Other Applicationsmentioning

confidence: 99%

Electronic Tongue—A Tool for All Tastes?

et al. 2017

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Electronic tongue systems are traditionally used to analyse: food products, water samples and taste masking technologies for pharmaceuticals. In principle, their applications are almost limitless, as they are able to almost completely reduce the impact of interferents and can be applied to distinguish samples of extreme complexity as for example broths from different stages of fermentation. Nevertheless, their applications outside the three principal sample types are, in comparison, rather scarce. In this review, we would like to take a closer look on what are real capabilities of electronic tongue systems, what can be achieved using mixed sensor arrays and by introduction of biosensors or molecularly imprinted polymers in the matrix. We will discuss future directions both in the sense of applications as well as system development in the ever-growing trend of low cost analysis.

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“…Explosive chemicals are useful and widely used in warfare, mining industries and civil constructions; unfortunately also in terrorist attacks. These compounds are categorized in four major classes: nitroaromatics, nitroamines, nitrate esters and peroxides according to their chemical structures [2]. Among them, special attention must be paid to peroxide explosives since those compounds contain neither nitro groups nor aromatic functionalities, what makes them difficult to detect with the analytical methods used to determine more established explosives [3], e.g.…”

Section: Introductionmentioning

confidence: 99%