首页|Near-infrared absorption of a benzothiophene-appended triphenylamine radical cation: A novel molecular design of NIR-II dye

Near-infrared absorption of a benzothiophene-appended triphenylamine radical cation: A novel molecular design of NIR-II dye

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A triphenylamine with three benzothiophene rings was designed and successfully synthesized in 87% yield. The compound showed absorption at 386 nm and blue emission at around 442 nm, with a fluorescence quantum yield of 0.57. The compound showed high thermostability. The radical cation obtained by one-electron oxidation was stable in solution and showed a significant absorption in die NIR-II region U_(max) = 1213 nm). DFT calculations confirmed die experimental data.

TriphenylamineBenzothiopheneStable radical cationNear-infrared absorptionNIR-II dye

Masafumi Yano、Yoshinori Inada、Yuki Hayashi

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Faculty of Chemistry, Material and Bioengineering, Kansai University, 3-3-35, Yamate-cho, Suita, 564-8680, Japan

2022

10.1016/j.dyepig.2021.109929

Dyes and Pigments

Dyes and Pigments

EISCI
ISSN：0143-7208
年,卷(期)：2022.197
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