For the immediate detection of gaseous strong acids, it is advantageous to employ colorimetric textile sensors based on halochromic dyes. Thus, a rhodamine dye with superior pH sensitivity and high thermal stability was synthesized and incorporated in nylon 6 and polyester fabrics to fabricate textile sensors through dyeing and printing methods. The spectral properties and solubility of the dye were examined; sensitivity to acidic gas as well as durability and reversibility of the fabricated textile sensors were investigated. Both dyed and printed sensors exhibited a high reaction rate and distinctive color change under the acidic condition owing to the high pH sensitivity of the dye. In addition, both sensors have outstanding durability and reversibility after washing and drying.
This study has been conducted with the support of the Korea Institute of Industrial Technology as Development of color/light-emitting textile products for detection of industrial harmful materials and prevention of danger (KITECH EO-20-0006). This study was supported by a grant from Priority Research Centers Program (2019R1A6A1A11051471) funded by the National Research Foundation of Korea (NRF)Funding: This study has been conducted with the support of the Korea Institute of Industrial Technology as “Development of color/light‐emitting textile products for detection of industrial harmful materials and prevention of danger (KITECH EO‐20‐0006). This study was supported by a grant from Priority Research Centers Program (2019R1A6A1A11051471) funded by the National Research Foundation of Korea (NRF)
