論文が、Dyes and Pigmentsに掲載されました。ぜひ、ご覧ください。
Synthesis and properties of thieno[3,2-b]thiophene appended triarylamine radical cations: Near-infrared absorbing dye with absorption beyond 1400 nm
Masafumi Yano, Kazushi Ueda, Yuto Shimizu, Yuki Arikata, Misaki Nakai, Tatsuo Yajima, Koichi Mitsudo, and Yukiyasu Kashiwagi
Dyes Pigm. (2024). 111916
https://doi.org/10.1016/j.dyepig.2023.111916
Abstract
Two triphenylamines with thieno [3,2-b] thiophene units were designed and synthesized. The radical cations obtained by the one-electron oxidation of these amines show a significant absorption in the near-infrared region. In particular, the derivative with three hexyl groups has excellent solubility, and its radical cation has a maximum absorption wavelength above 1400 nm. DFT calculations support these experimental results. A novel design strategy for NIR-II dyes is described.
