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

Masafumi Yano, Yoshinori Inada, Yuki Hayashi, Misaki Nakai, Koichi Mitsudo, Yukiyasu Kashiwagi

Research output: Contribution to journalArticlepeer-review

Abstract

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 the NIR-II region (λmax = 1213 nm). DFT calculations confirmed the experimental data.

Original languageEnglish
Article number109929
JournalDyes and Pigments
Volume197
DOIs
Publication statusPublished - Jan 2022

Keywords

  • Benzothiophene
  • Near-infrared absorption
  • NIR-II dye
  • Stable radical cation
  • Triphenylamine

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

Fingerprint

Dive into the research topics of 'Near-infrared absorption of a benzothiophene-appended triphenylamine radical cation: A novel molecular design of NIR-II dye'. Together they form a unique fingerprint.

Cite this