Near-Infrared Absorption and Photothermal Conversion Effect of Diammonium Dyes for Smart Textile Applications 


Vol. 62,  No. 2, pp. 101-111, Apr.  2025
10.12772/TSE.2025.62.101


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  Abstract

This study synthesized dihexylated diammonium (HDI) dyes incorporating various anions and investigated their effects on the near-infrared (NIR) absorption spectral properties. The anions used for HDI were tetrafluoroborate (BF4-), hexafluorophosphate (PF6-), bis(trifluorosulfonyl)imide (TFSI-), and tetrakis(pentafluorophenyl)borate (TPFB-). These HDI dyes exhibited negative solvatochromism, shifting absorption to shorter wavelengths in polar solvents. In non-polar solvents, molar extinction coefficients varied with anion size and electronegativity, increasing in the order BF4- < PF6- < TFSI- < TPFB-. In addition, coated fabric samples were prepared to assess the photothermal effect of the TPFB-based HDI dye. When exposed to a 1064 nm laser (1 W/cm2), surface temperature surged to 220 °C within 3 s, even causing carbonization. These results demonstrate that anion selection significantly influences HDI dye’s optical properties and enables superior NIR photothermal conversion. With low visible-light absorption and high NIR absorption, the HDI dye holds promise for smart textile applications.

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  Cite this article

[IEEE Style]

박종승, 박지민, 최예원, 장웨이, 박종승, "Near-Infrared Absorption and Photothermal Conversion Effect of Diammonium Dyes for Smart Textile Applications," Textile Science and Engineering, vol. 62, no. 2, pp. 101-111, 2025. DOI: 10.12772/TSE.2025.62.101.

[ACM Style]

박종승, 박지민, 최예원, 장웨이, and 박종승. 2025. Near-Infrared Absorption and Photothermal Conversion Effect of Diammonium Dyes for Smart Textile Applications. Textile Science and Engineering, 62, 2, (2025), 101-111. DOI: 10.12772/TSE.2025.62.101.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)