유해 산 검출용 아조계 색소의 특성 및 응용 연구
Properties and Application of Azo based Dyes for Detecting Hazardous Acids
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In this study, a convenient approach for sensitive, quick and simple detection of hazardous acids was investigated. A series of azo dyes were synthesized and applied as a chemosensor for the acid detection both on fibers and in solution. Various aniline, benzothiazole or isoxazole derivatives were used as diazo component and coupled with N-benzyl-N-ethylaniline or 2,2`-(phenylimino)bis-ethanol to give azo based dyes. The acid sensing phenomenon was observed by naked-eye and detection was further confirmed by UV-Vis spectrophotometer and hue difference(ΔH*) evaluation. The developed sensors showed a distinct and quick color change from yellow to magenta by addition of trace amounts of the hazardous acids. The absorption maxima was shifted to a longer wavelength by 70~150nm and hue difference(ΔH*) was 60~120o. A cotton fiber coated with Dye 1 exhibited excellent storage stability under various temperature(-30~43oC) and humidity(30~80%) conditions without discoloration and fading of the fiber sensors. Also the acid sensing properties were maintained.
Abstract
In this study, a convenient approach for sensitive, quick and simple detection of hazardous acids was investigated. A series of azo dyes were synthesized and applied as a chemosensor for the acid detection both on fibers and in solution. Various aniline, benzothiazole or isoxazole derivatives were used as diazo component and coupled with N-benzyl-N-ethylaniline or 2,2`-(phenylimino)bis-ethanol to give azo based dyes. The acid sensing phenomenon was observed by naked-eye and detection was further confirmed by UV-Vis spectrophotometer and hue difference(ΔH*) evaluation. The developed sensors showed a distinct and quick color change from yellow to magenta by addition of trace amounts of the hazardous acids. The absorption maxima was shifted to a longer wavelength by 70~150nm and hue difference(ΔH*) was 60~120o. A cotton fiber coated with Dye 1 exhibited excellent storage stability under various temperature(-30~43oC) and humidity(30~80%) conditions without discoloration and fading of the fiber sensors. Also the acid sensing properties were maintained.
참고문헌 (23)
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