Amplifying fluorescence sensing based on inverse opal photonic crystal toward trace TNT detection

Li, Heng; Wang, Jingxia; Pan, Zelin; Cui, Liying; Xu, Liang; Wang, Rongming; Song, Yanlin; Jiang, Lei

doi:10.1039/c0jm02554b

Cited by 105 publications

(65 citation statements)

References 39 publications

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“…Consequently, the signal-to-noise ratio is increased in the presence of fluorescently labeled analytes 321 or those capable of quenching a fluorescence signal. 322,323 For example, quenching of the fluorescence signal in the presence of vapors of nitroaromatics can be detected with enhanced sensitivity. 322,323 As discussed in the optics and fabrication sections, the design of colored CBPM classically assumes crystalline arrangements of colloids with long-range order, analogous to the naturally iridescent opal gemstone.…”

Section: Factors Influencing Sensing Applicationsmentioning

confidence: 99%

A colloidoscope of colloid-based porous materials and their uses

et al. 2016

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Nature evolved a variety of hierarchical structures that produce sophisticated functions. Inspired by these natural materials, colloidal self-assembly provides a convenient way to produce structures from simple building blocks with a variety of complex functions beyond those found in nature. In particular, colloid-based porous materials (CBPM) can be made from a wide variety of materials. The internal structure of CBPM also has several key attributes, namely porosity on a sub-micrometer length scale, interconnectivity of these pores, and a controllable degree of order. The combination of structure and composition allow CBPM to attain properties important for modern applications such as photonic inks, colorimetric sensors, self-cleaning surfaces, water purification systems, or batteries. This review summarizes recent developments in the field of CBPM, including principles for their design, fabrication, and applications, with a particular focus on structural features and materials' properties that enable these applications. We begin with a short introduction to the wide variety of patterns that can be generated by colloidal self-assembly and templating processes. We then discuss different applications of such structures, focusing on optics, wetting, sensing, catalysis, and electrodes. Different fields of applications require different properties, yet the modularity of the assembly process of CBPM provides a high degree of tunability and tailorability in composition and structure. We examine the significance of properties such as structure, composition, and degree of order on the materials' functions and use, as well as trends in and future directions for the development of CBPM.

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Section: Factors Influencing Sensing Applicationsmentioning

confidence: 99%

A colloidoscope of colloid-based porous materials and their uses

et al. 2016

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“…The photonic crystal was coated with a fluorescent molecule, and was enhanced by the photonic crystal. The fluorescence was quenched with TNT [91]. Li [92].…”

Section: Luminescencementioning

confidence: 99%

Advances in explosives analysis—part II: photon and neutron methods

et al. 2015

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The number and capability of explosives detection and analysis methods have increased dramatically since publication of the Analytical and Bioanalytical Chemistry special issue devoted to Explosives Analysis [Moore DS, Goodpaster JV, Anal Bioanal Chem 395:245-246, 2009]. Here we review and critically evaluate the latest (the past five years) important advances in explosives detection, with details of the improvements over previous methods, and suggest possible avenues towards further advances in, e.g., stand-off distance, detection limit, selectivity, and penetration through camouflage or packaging. The review consists of two parts. Part I discussed methods based on animals, chemicals (including colorimetry, molecularly imprinted polymers, electrochemistry, and immunochemistry), ions (both ion-mobility spectrometry and mass spectrometry), and mechanical devices. This part, Part II, will review methods based on photons, from very energetic photons including X-rays and gamma rays down to the terahertz range, and neutrons.

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“…The detection of NAC compounds at ultra‐low level has become an urgent issue in the interest of both national security and environmental protection. Until now, moderate efforts for the detection of NACs has been carried out using various kinds of analytical tools including mass spectrometry, electrochemical methods, surface enhanced Raman scattering methods and fluorescence sensor . Most of them are high cost, complicacy, and lack portability.…”

Section: Introductionmentioning

confidence: 99%

Amino‐functional electrospun nanofibrous membrane for detecting nitroaromatic compounds

Cui

et al. 2018

J of Applied Polymer Sci

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A novel amino‐functionalized polystyrene copolymer (PS‐NH2) was designed and synthesized with styrene and 4‐vinylbenzyl amine. Additionally, an amino modified glass (G‐NH2) was obtained as a carrier. (PS‐NH2/pyrene)/G‐NH2 fluorescent nanofibrous membrane [named (PS‐NH2/pyrene)/G‐NH2] was designed and prepared via electrospinning technique to detect representative saturated nitroaromatic (NAC) explosive vapor. The (PS‐NH2/pyrene)/G‐NH2 showed highly fluorescence stability in ambient condition and further displayed a high quenching efficiency of 70.9% toward trinitrotoluene (TNT) vapor (∼10 ppb) with an exposure time of 150 s at room temperature. The abundance of amino groups could effectively adsorb NACs and the binding of electron‐deficient NACs to the amino groups on the (PS‐NH2/pyrene)/G‐NH2 surface led to the formation of charge‐transfer complexes. The quenching constant (KSV) to TNT was obtained to be 1.07 × 1011 mL/g in gaseous phase with a limit of detection up to 2.76 × 10−13g/mL. Importantly, the (PS‐NH2/pyrene)/G‐NH2 showed notable selectivity toward TNT and 2,4‐dinitrotoluene vapors. Straightforwardly, the colorimetric sensing performance can be visualized by naked eye with a color change for detecting of different vapor phase NACs explosives. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46708

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Amplifying fluorescence sensing based on inverse opal photonic crystal toward trace TNT detection

Cited by 105 publications

References 39 publications

A colloidoscope of colloid-based porous materials and their uses

A colloidoscope of colloid-based porous materials and their uses

Advances in explosives analysis—part II: photon and neutron methods

Amino‐functional electrospun nanofibrous membrane for detecting nitroaromatic compounds

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