Synthesis and application of acid-gas sensing dyes having alkyl groups symmetrically substituted on monoazo chromophore

Kim, Taekyeong; Lee, Seonae

doi:10.1007/s12221-015-5428-1

Cited by 9 publications

(2 citation statements)

References 10 publications

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“…In order for dyes to be used as organic sensors, they must basically exhibit a color change after exposure to the chemicals or stimuli. This is called chromism and many instances are already well-known such as thermochromism, photochromism, solvatochromism, vapochromism, halochromism, and electrochromism [15][16][17][18][19][20]. As mentioned above, the detection of the vapor phase is more effective than that of liquid or solution phases.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Vapochromic Dyes Having Sensing Properties for Vapor Phase of Organic Solvents Used in Semiconductor Manufacturing Processes and Their Application to Textile-Based Sensors

Lee

Kim

2022

Sensors

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Two vapochromic dyes (DMx and DM) were synthesized to be used for textile-based sensors detecting the vapor phase of organic solvents. They were designed to show sensitive color change properties at a low concentration of vapors at room temperature. They were applied to cotton fabrics as a substrate of the textile-based sensors to examine their sensing properties for nine organic solvents frequently used in semiconductor manufacturing processes, such as trichloroethylene, dimethylacetamide, iso-propanol, methanol, n-hexane, ethylacetate, benzene, acetone, and hexamethyldisilazane. The textile sensor exhibited strong sensing properties of polar solvents rather than non-polar solvents. In particular, the detection of dimethylacetamide was the best, showing a color difference of 15.9 for DMx and 26.2 for DM under 300 ppm exposure. Even at the low concentration of 10 ppm of dimethylacetamide, the color change values reached 7.7 and 13.6, respectively, in an hour. The maximum absorption wavelength of the textile sensor was shifted from 580 nm to 550 nm for DMx and 550 nm to 540 nm for DM, respectively, due to dimethylacetamide exposure. The sensing mechanism was considered to depend on solvatochromism, the aggregational properties of the dyes and the adsorption amounts of the solvent vapors on the textile substrates to which the dyes were applied. Finally, the reusability of the textile sensor was tested for 10 cycles.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Vapochromic Dyes Having Sensing Properties for Vapor Phase of Organic Solvents Used in Semiconductor Manufacturing Processes and Their Application to Textile-Based Sensors

Lee

Kim

2022

Sensors

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“…We have already reported on pH indicating dyes. 13–15 One is an acid-gas sensing dye that changes from yellow to red when exposed to acid-gas, and the other is a base-gas sensing dye that changes from orange to blue when exposed to base-gas, by modifying the dye structure; to improve the dye affinity toward polyethylenic fabric, it needs to have extreme hydrophobicity as well. To improve color visibility, a new coumarin-based fluorescence dye, whose fluorescence-wavelength color-wavelength behaviors can be changed by exposure to acid-gas, was synthesized by modifying the dye structure to have relatively long alkyl groups.…”

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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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Synthesis of VOC-sensing Dyes for Fabrication of Cotton-based Chromogenic Sensors

2022

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Synthesis and application of acid-gas sensing dyes having alkyl groups symmetrically substituted on monoazo chromophore

Cited by 9 publications

References 10 publications

Synthesis of Vapochromic Dyes Having Sensing Properties for Vapor Phase of Organic Solvents Used in Semiconductor Manufacturing Processes and Their Application to Textile-Based Sensors

Synthesis of Vapochromic Dyes Having Sensing Properties for Vapor Phase of Organic Solvents Used in Semiconductor Manufacturing Processes and Their Application to Textile-Based Sensors

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

Synthesis of VOC-sensing Dyes for Fabrication of Cotton-based Chromogenic Sensors

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