VOCs Detection Based on Evanescent Wave Coupling of Dye-Coated Optical Fiber

Yeom, Se-Hyuk; Kang, Byoung‐Ho; Seo, Chang-Taek; Lee, Dong-Ic; Shin, Han-Jae; Lim, Sang-Chul; An, Myungchan; Lee, Sang‐Won; Lee, Jae-Sung; Kang, Shin‐Won

doi:10.1109/jsen.2014.2385894

Cited by 8 publications

(3 citation statements)

References 18 publications

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“…Among a series of electronic, , colorimetric, and optical sensors , that can detect physical and chemical stimuli, whispering-gallery mode (WGM) optical microresonators have attracted great interest owing to their remote sensing capability and excellent sensitivity. − A WGM resonator entraps light via total internal reflection at its outermost surface. In a simple approximation, the wavelength of the WGM resonance peak is proportional to the optical path length and refractive index of the matrix .…”

Section: Introductionmentioning

confidence: 99%

“…5,6 These VOCs are known to cause headaches, nausea, and even more severe diseases like cancers. 7−9 Among a series of electronic, 10,11 colorimetric, 12 and optical sensors 13,14 that can detect physical and chemical stimuli, whispering-gallery mode (WGM) optical microresonators have attracted great interest owing to their remote sensing capability and excellent sensitivity. 15−17 A WGM resonator entraps light via total internal reflection at its outermost surface.…”

Section: ■ Introductionmentioning

confidence: 99%

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Polymer Optical Microcavity Sensor for Volatile Organic Compounds with Distinct Selectivity toward Aromatic Hydrocarbons

et al. 2021

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A whispering-gallery mode (WGM) optical resonance sensor for volatile organic compounds (VOCs) is developed from polystyrene (PS) microspheres doped with fluorescent βcyano-appended oligo(p-phenylenevinylene) (β-COPV). The β-COPV-doped PS microspheres (MS COPV ) are formed by the miniemulsion method in a binary solvent. MS COPV expand upon permeation of VOCs into the PS matrix and exhibit a spectral shift of the WGM resonance peak. The permeation efficiency is highly dependent on the chemical affinity between the analyte and the polymer matrix, with exceptionally high selectivity toward aromatic hydrocarbons such as benzene, toluene, and xylenes (BTXs). The high selectivity and sensitivity of MS COPV are in clear contrast to those of conventional WGM sensors that just detect VOCs nonpreferentially through adsorption onto the surface.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Polymer Optical Microcavity Sensor for Volatile Organic Compounds with Distinct Selectivity toward Aromatic Hydrocarbons

et al. 2021

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“…In particular, there are chemosensing dyes, which can detect specific dangerous or toxic chemical materials. [1][2][3][4][5][6][7] Most chemosensing dyes can sense the chemicals only in the solution phase. In the vapor phase, the sensing function would be very weak or even nonexistent.…”

mentioning

confidence: 99%

Synthesis of novel coumarin-based acid vapochromic fluorescence dye showing change of both color and fluorescence emission spectrum for application to sensitive, reusable, and washable textile sensors

Lee

Kim

2020

Textile Research Journal

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A new coumarin-based fluorescence dye, which simultaneously changes the fluorescence behavior as well as color by exposure to an acid-gas, was synthesized by modifying the dye structure so as to produce relatively long alkyl groups. The newly synthesized halochromic fluorescence dye was applied to polyethylenic fibers, such as high molecular weight polyethylene. The acid-gas sensing was functionalized not only in the solution state but also inside a matrix. A textile sensor was subsequently fabricated in this study and showed visible changes to both color and fluorescence emission properties as well as sensitivity to changes under low concentrations of gas-phase hydrogen chloride. Further, the sensing performance was sustainable and repeatable. From the washability test, it was observed that the dye did not leach out completely.

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